Frequently Asked Questions – Air Conditioning

Below are frequently asked questions related to Air Conditioning and Air Conditioning products.

Troubleshooting – all types of air conditioners

• Why is my air conditioner not heating or cooling properly? >

  If your air conditioner has stopped heating or cooling – or isn’t performing as well as it used to – there are a few simple checks you can try before booking a technician. Follow the troubleshooting tips below. If the issue persists, you may need to arrange a service call.

  Note: If the unit is newly installed, please contact the installer directly. The issue may be related to installation, which is not covered under the Rinnai warranty.

  TROUBLESHOOTING TIPS

  1. Incorrect mode or temperature setting
  • Ensure the unit is set to the correct mode: Cool, Heat, or Auto.
  • Check the temperature setting. If it’s too close to the current room temperature, the unit may not activate.

  2. Dirty or clogged filters
  • Dirty filters restrict airflow and reduce system performance.
  • Clean or replace filters regularly – typically every 1 to 3 months, depending on usage and environment.

  3. Thermostat issues
  • The thermostat may be malfunctioning or located in a spot that misreads the room temperature (e.g., near a heat source or in direct sunlight).
  • Check that the unit has power and that the circuit breaker hasn’t tripped.

  4. Blocked outdoor unit
  • Leaves, dirt, or debris around the outdoor unit can obstruct airflow and affect heat exchange.
  Clear any obstructions and ensure the unit has adequate ventilation.

  5. Low refrigerant levels
  • A refrigerant leak or low charge can prevent effective heating or cooling.
  • This issue requires a licensed technician to inspect and recharge the system.

  NEXT STEPS
  If none of the above steps resolve the issue:

  • Book a technician for further diagnosis or reach out to Rinnai Customer Service for assistance.
  • For new installations, contact the installer directly, as installation faults are not covered by the Rinnai warranty.

• My air conditioning unit is leaking water — is this normal? >

  It is normal for your air conditioner to produce condensation as part of its regular operation. When warm, humid air comes into contact with the cooler coil surface, the moisture in the air condenses into water. This water should then drain outside to an area that does not inconvenience the user.

  However, if you notice water leaking from the indoor unit down the wall or into the room, this could indicate a more serious issue.

  TROUBLESHOOTING TIPS

  • Check the air filter on the indoor unit. A dirty filter can restrict airflow and cause the coil to freeze, leading to water leakage when it defrosts.
  • If cleaning the filter does not resolve the issue, it’s likely that a technician will need to inspect the unit.
  • Reach out to Rinnai Customer Service to book a service.
• Where can I download the App to control my Air Conditioner via Wi-Fi? >
  The App you’ll need depends on your specific air conditioning unit. Many of our air conditioners with a built-in Wi-Fi module can be monitored and controlled remotely from your smart device.
  
  If you’re unsure whether your system is compatible, check your owner / operations manual.
  
  Click here to to download the relevant App for your product >

SPECIFICALLY RELATED TO:

• Ducted System >
  • What happens if part of my Ducted air conditioning system breaks down? >
    Ducted air conditioning is a central system, so if a major component experiences a fault, it can impact heating or cooling throughout your whole home. The good news is that issues are often preventable with professional installation and regular servicing, which help keep your system running smoothly and reliably.
    
    If you experience any problems, contact your licenced technician to investigate or reach out to Rinnai Customer Service for assistance.
  • Why is there no air flow in some rooms? >

    If there is no airflow to one or more rooms, it is most likely due to an issue with the ducting system or zoning, not the Rinnai/Brivis unit itself.

    When installing a ducted heating and cooling system, your installer sets up ducting to distribute air throughout your home. If airflow is failing in a room, common causes include:

    • Faulty or disconnected ducting
    • Closed or malfunctioning zone dampers (if zones are installed)
    • Obstructions in vents or ducts

    Rinnai is not responsible for the ducting system in your home. Please contact your installer to help troubleshoot airflow issues with your system.

  • Why are some rooms too hot/cold compared to other rooms? >

    When your installer designs and commissions your air conditioning system, part of the process is to balance airflow so that temperatures are as even as possible throughout your home.

    IMPORTANT

    • The wall controller measures temperature only at its location. It does not monitor temperatures in other rooms.
    • Closed or malfunctioning zone dampers (if zones are installed)
    • If some rooms feel excessively different in temperature, possible reasons include:
      – Airflow imbalance: Too much or too little air reaching certain areas.
      – External factors: Room orientation (north/south), exposure to sunlight.
      – Building design: Large windows, poor insulation, or high ceilings.

    It is the installer’s responsibility to design the system for balanced airflow within reason. For improved comfort, you may consider zoning your system and adding temperature sensors in each zone.

    Our Rinnai Home Controller system is designed to provide year-round comfort with advanced zoning and temperature control options tailored to your needs.

  • My Ducted air conditioning is not cooling/heating the house to the set temperature, what can I do? >

    There are several possible reasons why your system may not be reaching the set temperature. Try these checks:

    1. Lack of maintenance

    • Dirty filter – Check and clean your return air filter regularly.
    • Servicing – Have your system serviced by a qualified Rinnai technician every 2 years.
    • Outdoor unit airflow – Ensure nothing is blocking the outdoor unit (e.g., bushes, trees, rubbish).

    2. Design and working conditions

    • Extreme weather – On very hot or cold days, the system may struggle to reach the set temperature. Adjust to a comfortable but reasonable setting.
    • New installation – If the system is newly installed and not meeting expectations, contact your installer.
    • Zoning – Some systems are designed to heat/cool only part of the house at a time. Turn off unused zones to focus on occupied areas.
    • Doors and windows – Make sure they are closed to prevent conditioned air from escaping.
    • Blocked air inlet/outlet – Turn off the unit, remove any obstruction, then restart.
    • Sunlight heat gain – Close curtains and blinds during periods of high heat or bright sunshine.

    3. Possible system fault

    If you’ve checked all the above and the issue persists, there may be a fault with the refrigeration or ducting system.

    • If newly installed, contact your installer first.
    • Otherwise, book a service with an authorised Rinnai technician.
  • My Ducted air conditioning is not working, what can I do? >

    If your system has completely stopped working, there’s little you can do as a homeowner, but you can try these simple checks before calling a professional:

    1. Check for error codes on the controller
    Error codes can indicate the nature of the fault.

    2. Check the return air filter and outdoor unit
    • Make sure both are clear of obstructions such as dust, debris, or vegetation.

    3. Verify controller settings
    • Ensure the correct mode (Heating or Cooling) and temperature are selected.

    4. Check your electrical switchboard
    • Make sure no safety switches have tripped. Your air conditioning system should be on an independent circuit, usually marked ‘Air Conditioning.’

    5. Perform a power reset
    • Turn off the power at the isolation switch located next to the outdoor unit for 5–10 minutes, then turn it back on. This may clear minor faults and reboot the system.

  • My Ducted air conditioning unit does not turn on when pressing ON/OFF button? >

    If your system has completely stopped working, there’s little you can do as a homeowner, but you can try these simple checks before calling a professional:

    1. Check for error codes on the controller
    • Error codes can indicate the nature of the fault.

    2. Check the return air filter and outdoor unit
    • Make sure both are clear of obstructions such as dust, debris, or vegetation.

    3. Verify controller settings
    • Ensure the correct mode (Heating or Cooling) and temperature are selected.

    4. Check your electrical switchboard
    • Make sure no safety switches have tripped. Your air conditioning system should be on an independent circuit, usually marked ‘Air Conditioning.’

    5. Perform a power reset
    • Turn off the power at the isolation switch located next to the outdoor unit for 5–10 minutes, then turn it back on. This may clear minor faults and reboot the system.

  • The Ducted unit changes from COOL/ HEAT mode to FAN mode – is this normal? >

    This is normal operation and usually happens for two reasons:

    1. Defrost cycle
    • The unit may temporarily switch to FAN mode to prevent frost from forming on the outdoor unit during heating. Once the temperature increases, the system will resume the previously selected mode.

    2. Set temperature reached
    • When the desired temperature is achieved, the compressor turns off, and the unit runs in FAN mode to maintain airflow. It will resume heating or cooling when the temperature fluctuates again.

• Portable Systems >
  • My Portable air conditioner is faulty, where can I take it to be repaired? >

    Unfortunately, due to the design of portable air conditioners, Rinnai Portable models are not serviceable or repairable appliances. No major internal components are available as spare parts, aside from items included in the installation kit.

    Warranty claims
    If your unit is still under warranty:
    • Return it to the place of purchase for assessment.
    • If returning to the store is not possible, contact Rinnai Customer Service to discuss alternative arrangements.

    Out of warranty
    If your unit is out of warranty and has failed, it should be disposed of appropriately in accordance with local eWaste guidelines.

  • My Portable air conditioner is not cooling, what can I do? >

    If your Rinnai Portable air conditioner isn’t cooling effectively, try the following steps:

    Basic checks
    • Ensure the exhaust duct is properly installed and venting hot air outside.
    • Close all windows and doors to prevent warm air from entering the room.
    • Check the room size against your unit’s recommended coverage. An undersized unit may struggle to cool larger spaces.

    Maintenance
    • Clean the air filters. Blocked filters restrict airflow and reduce cooling performance.
    • Check for kinks or obstructions in the exhaust duct, which can trap heat inside the unit.

    Environmental factors
    • High ambient temperatures or humidity may reduce cooling efficiency.
    • Poor insulation or direct sunlight can also affect performance.

    Error codes
    • If an error code appears on the display (e.g. ‘P1’), refer to the operation manual or error code booklet for guidance.

• Evaporative Cooler >
  • Why can’t I switch my Brivis controller from heating to cooling? >

    If pressing the ‘MODE’ button on your Brivis controller does not switch from heating to cooling, it usually means the controller isn’t receiving a signal from the evaporative cooler.

    Brivis controllers are designed to automatically detect connected appliances – no manual programming is required. When an evaporative cooler is properly connected, the controller should recognise it as an available mode.

    WHAT TO CHECK

    1. Power supply
    Inspect your home’s electrical switchboard for any tripped circuit breakers related to the cooler. Reset any tripped breakers and try switching modes again.

    2. Communication signal
    If all breakers are on and the issue persists, the controller may not be receiving a signal due to one of the following:

    Note: Only a suitably qualified technician should investigate these issues:
    • A fault in the evaporative cooler itself
    • A problem with the communication cable between the cooler and the controller

    NEXT STEPS
    If basic checks don’t resolve the issue, you’ll need to book a Rinnai technician to inspect the system and restore communication between the controller and the cooler.

  • Why is there condensation on surfaces when I use my Evaporative Cooler? >

    Condensation can form on tiles and other hard surfaces due to the temperature difference between cooler surfaces and the warm, humid air introduced by the evaporative cooler. These systems cool by adding moisture to the air, which can raise indoor humidity – especially during extended use or naturally humid days.

    SOLUTIONS TO REDUCE CONDENSATION

    1. Improve ventilation
    Ensure your home is well-ventilated to allow moisture to escape.

    • Open windows strategically based on wind direction.
    • For example, if a warm, humid wind is coming from the north, open windows on the south side to avoid drawing in more humidity.

    2. Evaluate cooler use

    • On high humidity days, the cooler may worsen indoor conditions.
    • Consider using fan-only mode instead.
    • Refer to your owner’s manual for instructions.

    3. Adjust airflow direction

    • Ensure vents are directing airflow across the ceiling, not toward the floor.
    • This helps reduce surface condensation.

    4. Service your cooler

    • Brivis recommends servicing every two years by an authorised technician.
    • Contact the Rinnai Customer Service Centre to arrange service.

    5. Contact support
    If condensation issues persist

    • Contact Rinnai Customer Service for assistance

    Note: Condensation forming inside the home is rarely caused by a fault in the unit itself. Service callouts related to condensation are unlikely to be covered under warranty.

  • Why can I hear water constantly running from my Evaporative Cooler? >

    In many cases, yes – Evaporative coolers are designed to manage water flow as part of their normal operation. However, excessive or continuous water flow may indicate a fault.

    NORMAL WATER FLOW BEHAVIOURS

    Brivis Promina & Contour Series
    These models periodically dump and refill water to maintain cooling efficiency. The frequency depends on environmental conditions and evaporation rates.

    Brivis AD Series
    These units feature a continuous bleed-off function, where a small amount of water flows out during operation to prevent mineral build-up. This protects filter pads and internal components.

    The bleed rate varies based on:
    • Local water quality
    • Cooler capacity
    • Weather conditions (e.g., high temperatures or poor water quality may increase bleed rate)

    All Models
    Brivis coolers are designed to automatically dump stored water one hour after shutdown to keep the system clean.

    WHEN IT’S NOT NORMAL

    If you notice a continuous, high-volume flow of water, this is not part of normal operation and should be investigated.

    IMMEDIATE ACTION

    • Isolate the water supply to prevent potential property damage.
    • Once safe, contact Rinnai Customer Service to book a service.
  • Why does my new Evaporative Cooler smell strange? >

    A mild odour from a new Evaporative cooler is normal and usually temporary.

    Why it happens
    New cooling pads may emit a slight smell as they settle in. This odour typically dissipates quickly as the pads are flushed continuously during regular use.

    How to reduce the smell

    1. Run the cooler on high fan speed for about one hour.
    2. Turn the cooler off for 70 minutes to allow the unit to dump the water and refill with fresh water.
    3. Repeat this cycle until the smell reduces to an acceptable level.

    IF YOUR UNIT IS NOT NEW
    A persistent or unpleasant odour may indicate that your system needs servicing.

    COMMON CAUSES

    • Stagnant water
    • Dirty or deteriorated pads
    • Mineral build-up

    To maintain optimal performance and hygiene, Rinnai/Brivis recommends servicing your cooler every two years.

    Contact Rinnai Customer Service to book a service.

  • Why is my Evaporative Cooler blowing warm air? >

    If your cooler is blowing warm air, it may be due to environmental conditions, user settings, or a system fault. Below are checks you can perform and issues that may require service.

    CHECKS YOU CAN DO

    1. High humidity
    Evaporative cooling is less effective on humid days.
    • The system relies on dry air to evaporate water and cool the air.
    • On humid days, consider using fan-only mode to circulate air without adding moisture.

    2. Incorrect ventilation
    • Ensure windows or doors are open to allow warm air to escape.
    • Poor ventilation can trap warm air inside, reducing cooling effectiveness.

    3. User error
    • Refer to your operation manual and ensure the controller is set to the correct cooling mode.

    CAUSES THAT REQUIRE A SERVICE

    1. Blocked or dirty pads
    • Clogged or worn-out filter pads can prevent proper cooling.

    2. Fan or pump fault
    • A faulty fan motor or water pump may prevent the cooler from operating correctly.
    • If the fan is running but the air isn’t cool, the pump may not be delivering water to the pads.

    3. Water supply issues
    • The cooler pads may be dry if the water pump isn’t operating or the water supply is interrupted.

    NEXT STEPS
    If basic checks don’t resolve the issue, contact Rinnai Customer Service to book a service.

  • Why does the fan turn off when I turn the pump on? >

    This behaviour is normal and part of the designed operation of your Evaporative cooler.

    Here’s what’s happening

    • When you activate ‘Fan Only mode’, the cooler circulates fresh air through your home without cooling.
    • If you then turn on the pump, the system switches to ‘Cooling mode’.
    • In Cooling mode, the cooler is programmed to wet the pads first before turning the fan back on.

    This short delay ensures that the air being circulated is properly cooled before entering your home.

    It’s an intentional feature that helps maintain cooling efficiency and comfort.

    For more details, refer to your operation manual.

  • Why is water continually running while my Evaporative Cooler is on? >

    Brivis AD Series
    Brivis AD models use a ‘bleed-off’ method to maintain water quality in the tank.

    This process continuously removes salt and sediment from the system, allowing the tank to be topped up with clean water.

    This is normal operation and helps protect the cooler’s internal components and filter pads from premature deterioration.

  • Why does my Brivis Advance or Promina Cooler dump water periodically during operation? >

    These models use a ‘running refresh‘ method for water quality control.

    Instead of a continuous bleed, the system periodically flushes the tank during operation to prevent salt and sediment build-up.

    This ensures water quality remains within acceptable levels and supports long-term performance and hygiene.

  • Why doesn’t my Evaporative cooler turn on when the current time and room temperature are displayed, but the word ‘COOLER’ is missing? >

    This typically means your evaporative cooler has lost communication with the Networker Wall Controller.

    When the controller cannot detect the cooler, it won’t display the ‘COOLER’ mode or allow activation.

    NEXT STEPS
    A service call is required to restore communication between the controller and the cooler.

    Contact Rinnai Customer Service to book a service.

Warranty

• What is the warranty on my air conditioner? >
  WARRANTY TERMS
  You can find out the warranty terms of all Rinnai products on the following page >

  For Brivis Evaporative Cooling warranty details, consult your operation manual.

• Split Systems >
  • How often does a Split System air conditioner need service? >

    To keep your portable air conditioner running efficiently for years, follow these simple steps:

    • Clean filters: every 1–3 months, depending on usage
    • Professional service: every 1–2 years

    Regular maintenance keeps your system running efficiently, improves indoor air quality, and helps extend the life of your unit.

• Ducted Systems >
  • How often should I clean my Ducted systems return air filter? >
    Filters are supplied and fitted by your installer and are not part of the Rinnai system. A dirty air filter can cause excessive strain on the compressor and fan blower motor, leading to overheating and automatic shutdown. In severe cases, components may fail and require replacement.
    
    To avoid inefficient or failed operation of your unit, check the filter at least every 2 to 4 weeks.
  • Should I get my Ducts cleaned? >

    In most cases, duct cleaning is not required for properly installed and maintained systems. However, you may consider cleaning your ducts if:

    • There is visible dust, debris, or mould inside the ductwork.
    • You notice unusual odours coming from the vents.
    • There has been recent construction or renovation in your home.
    • Someone in the household suffers from allergies or respiratory issues.

    IMPORTANT

    • Regularly cleaning your return air filter is far more critical for system performance than duct cleaning.
    • If you suspect contamination or airflow issues, contact your installer or a qualified duct cleaning professional.

• Portable Systems >
  • How can I extend the life of my Portable air conditioner? >

    To keep your Portable air conditioner running efficiently for years, follow these simple steps:

    • Wipe down exterior panels and the display with a soft, damp cloth at the end of each cooling season.
    • Check and clean the air filters regularly – weekly during heavy use, or every 2–3 weeks if you only use the unit occasionally.
    • If you’re storing the unit for a long period, remove any plugs and hoses from the drain outlets and store it in a dry, protected location.

    
    

• Evaporative Cooler >
  • How often should I get my Evaporative Cooler serviced? >

    To ensure your Brivis evaporative cooler continues to operate at peak efficiency, it should be serviced every two years by an authorised technician trained in Brivis systems.

    Regular servicing helps

    • Maintain optimal cooling performance
    • Prevent build-up of mineral deposits and debris
    • Extend the life of your unit

    How to arrange a service

    • Contact Rinnai Customer Service to book a service.
  • What does Duct cleaning entail for my cooling system? >

    Over time, dust, dirt, allergens, and odours can accumulate in your ductwork and on system components. A professional duct cleaning service helps restore air quality and system efficiency.

    Duct cleaning includes

    • Remove dust and debris – from ductwork and cooling system
    • Eliminate dust mites – that may be living and breeding in the system
    • Remove odours – caused by buildup in ducts and diffusers
    • Improve indoor air quality – especially beneficial for allergy sufferers
    • Clean the cooler fan and assembly
    • Clean supply air diffusers – to ensure even airflow and hygiene

    Regular Duct cleaning can enhance system performance and contribute to a healthier home environment.

New installations and general questions

• What type of air conditioner is best for my situation? >

  Rinnai has a number of different solutions depending on your needs and budget. Below is a breakdown of the main solution types.

  Feature / Factor	Portable System	Single Split System	Multi-Split System	Ducted System	Mini VRF System
  Basic Description	Free-standing unit on wheels; vents out a window	One indoor + one outdoor unit	Multiple indoor units + one outdoor unit	Central unit + ducted air delivery	Multiple indoor units + smart outdoor unit
  Best For	Short-term cooling/heating; rentals	Single room	Multiple rooms with limited outdoor space	Whole-home comfort	Multi-room, high-performance control
  Room-by-Room Control	No	Yes	Yes	Yes (with zoning)	Yes
  Different temp per room?	No	Yes	Yes (same mode: heat or cool)	Yes (with zoning)	Yes
  Simultaneous heat/cool in different rooms	No	No	No	Yes (zoned)	Model dependent (Not with current Rinnai unit)
  Outdoor Unit Required	No	Yes	Yes	Yes	Yes
  Installation Complexity	Very Low	Low	Medium	High	High
  Aesthetic Impact	Higher (unit in room, hose visible)	Indoor unit visible	Indoor units visible	Very discreet (vents only)	Indoor units visible
  Space Required Outdoors	None	Small	Small	Larger	Medium
  Energy Efficiency	Lower	Good	Good	Very Good	Excellent
  Noise Level	Higher (unit in room)	Very quiet indoors	Very quiet indoors	Very quiet indoors	Very quiet indoors
  Cost Range — Equipment + Install	Very Low	Low	Medium	High	Premium
  Typical Life Expectancy	~3–7 yrs	~10–15 yrs	~10–15 yrs	~12–20 yrs	~15–20 yrs
  Ideal Use Case	Short-term / rented spaces	Bedroom, study, small room	Several rooms, limited outdoor space	Whole home, zoned comfort	Large homes, premium comfort
  Maintenance	Easy (clean filters)	Basic	Basic–Moderate	Moderate	Moderate
  Zoning Ability	No	No	Limited	Yes	Yes
  Best Value if…	You need temporary cooling	One regular-use room	Multiple rooms but minimal outdoor space	You want whole-home comfort	You want flexibility & performance

• What temperature should I set my air conditioner to? >

  For comfort and efficiency:

  • Cooling: 23–25°C
  • Heating: 18–20°C

  Every degree outside these ranges can significantly increase energy use.

• What is the most efficient setting on my air conditioner? >

  To maximise efficiency and comfort, follow these recommended settings:

  Cooling mode
  • Set temperature to ~25°C
  • Enable swing function to evenly distribute cool air
  • Fan speed: Medium or High during the day; Low at night (especially in bedrooms)

  Heating mode
  • Set temperature to ~21°C
  • Enable swing function to evenly distribute warm air
  • Fan speed: Medium

  Note: It is best to avoid using ‘AUTO’ mode.
  • AUTO mode can cause the unit to switch between heating and cooling unexpectedly.
  • This may lead to temperature fluctuations and reduced energy efficiency due to a wider temperature deadband.

• Is it normal for the fan to keep running when in cooling mode? >

  Yes, it is normal for the fan to continue running while the air conditioner is in cooling mode. This helps maintain consistent airflow and ensures the room temperature is evenly distributed.

  However, in heating mode, the fan typically turns off once the set temperature is reached. This is because the system cycles off to prevent blowing cool air into the room when heating is not required.

• Can I reuse refrigerant piping when replacing my old air conditioner? >

  Refrigerant types used in air conditioners have changed over time, which means existing pipework may not always be compatible with newer systems. Incompatibility can arise due to differences in pipe sizing or residue left by the old refrigerant, which may contaminate the new refrigerant and affect system performance.

  To ensure your new air conditioner operates safely and efficiently, it’s best to have a professional assess your existing piping. If you’d like a Rinnai representative to provide a quote and advice tailored to your setup complete the online request a quote form and someone will contact you regarding your requirements.

SPECIFICALLY RELATED TO:

• Split Systems >
  • How much does it cost to run a Split System? >

    Running costs depend on the unit size, energy efficiency, electricity rates and how often it’s used.

    As a rough guide:

    • 2.5–3.5 kW unit: ~$0.60–$1.00 per hour
    • 5.0–7.0 kW unit: ~$1.00–$2.00 per hour

    Inverter Split Systems adjust their output once the room reaches temperature, which helps keep running costs down.

  • How do I work out what size Split System air conditioner do I need for my space? >

    When sizing an air conditioner to suit a room, many factors need to be considered to ensure the unit is appropriate for the conditions and meets the user’s expectations. These include room dimensions, insulation, window placement, sun exposure, and more.
    
    For this reason, Rinnai recommends having a suitably qualified technician assess your space and recommend the correct system size.

    If you’re unsure which Air Conditioning system is right for you contact one of our specialists to request a quote here.
    

    As a quick place to start refer the following information:

    1. Start with room size (the quick rule of thumb)
    For most Australian homes with average insulation and ceiling height:

          Allow ~0.15 – 0.18 kW per m²

    Formula: Room area (m²) × 0.15 – 0.18 = kW size

    Examples:
          • 20 m² room → 3.0 – 3.6 kW
          • 30 m² room → 4.5 – 5.4 kW
          • 40 m² room → 6.0 – 7.2 kW
    

    This gets you in the right ballpark fast.

    2. Adjust for real-world factors (important)
    You may need to go up a size if you have:
          • Ceiling height: Higher than 2.4 m → increase capacity
          • Sun & orientation: North or west facing rooms | Large windows | Little shading
          • Insulation: Older homes | Poor roof or wall insulation
          • Open plan spaces: Kitchen/living combined | Lots of doorways or airflow to other rooms
          • Heat sources: Multiple people | Kitchen appliances | Home office equipment

    If two or more of these apply → size up.

    3. Typical split system sizes (guide)

    Room type:
          • Bedroom / study: ~2.5 – 3.5 kW
          • Small living room: ~3.5 – 5.0 kW
          • Large living / open plan: ~6.0 – 8.0 kW
          • Very large open plan: ~9.0+ kW
    

    4. Don’t oversize too much
    Bigger isn’t always better:
          • Short cycling
          • Less efficient
          • Poor humidity control
          • Higher upfront cost
    

    Modern inverter systems handle this better – but right-sized is still best.

    5. The most accurate method (what installers use)
    A heat load calculation, which considers:
          • Room dimensions
          • Insulation
          • Glass area
          • Orientation
          • Local climate zone
    

    This is the gold standard, especially for:
          • New builds
          • Renovations
          • High-end or open-plan homes
    

  • How much does it cost to run a Split System? >

    Running costs depend on the unit size, energy efficiency, electricity rates and how often it’s used.

    As a rough guide:

    • 2.5 – 3.5 kW unit: ~$0.60 – $1.00 per hour
    • 5.0 – 7.0 kW unit: ~$1.00 – $2.00 per hour

    Inverter Split Systems adjust their output once the room reaches temperature, which helps keep running costs down.

  • How much does it cost to install a Split System air conditioner? >

    Installation costs can vary depending on factors like the distance between the indoor and outdoor units, any electrical work required, and the type of walls or access in your home.

    As a general guide:

    • Standard installations: $600–$1,200
    • More complex installations may cost more

    Your installer can provide a detailed quote upfront so you know exactly what to expect.

  • How long does it take to install a Split System air conditioner? >

    Most standard installations can be completed in 3–6 hours.

    More complex installations – such as in double-storey homes, with long pipe runs, or requiring electrical upgrades – may take longer. Your installer can provide a more accurate timeframe based on your specific setup.

  • Can a Split System heat my home as well as cool it? >

    Yes. Reverse-cycle split systems both heat and cool and are very efficient, even in colder climates.

    They use electricity to move heat rather than create it, making them cheaper to run than many traditional heaters.

  • Are Split System air conditioners noisy? >

    No – modern split systems are designed to operate very quietly.
    • Indoor units usually run quieter than a normal conversation.
    • Outdoor units are much quieter than older models.

    Many units also include a quiet or sleep mode, making them ideal for nighttime use.

  • Can I use a Split System air conditioner all day? >

    Yes. Split systems are designed for continuous operation.

    For optimal efficiency and comfort:
    • Keep the temperature setting consistent rather than constantly changing it.
    • Make use of timers and sleep modes to save energy and maintain a comfortable environment.

  • Do Split Systems work in very hot or cold weather? >

    Yes. Most modern systems operate effectively:

    • Cooling: up to 45 – 50°C
    • Heating: down to -10°C or lower (model dependent)

    Performance varies by brand and model.

  • Is a Split System better than Ducted air conditioning? >

    The right choice depends on your home and how you plan to use it.

    A Split System is ideal if you want to heat or cool specific rooms, are retrofitting an existing home, or are looking for a lower upfront cost. Ducted Systems are better suited to whole-home comfort and are often preferred in new builds where a centralised solution can be designed from the start.

  • Can a Split System improve indoor air quality? >

    Yes. Most Split Systems include built-in air filtration to help keep your indoor environment cleaner and more comfortable. These typically include dust and pollen filters, with some models also offering deodorising or antibacterial filters.

    For the best performance and air quality, filters should be cleaned regularly as part of your routine maintenance.

  • Can I install a Split System air conditioner myself? >

    No. In Australia, Split System air conditioners must be installed by a licensed refrigeration technician and a licensed electrician.

    DIY installation is illegal, can be unsafe, and will void your manufacturer’s warranty. To ensure your system operates correctly and complies with regulations, always use qualified professionals for installation.

  • How long does a Split System last? >

    With proper installation and maintenance:

    • 10–15 years is typical

    Coastal or dusty environments may require more frequent servicing.

  • Are rebates available in Australia? >

    You may be eligible for rebates or incentives depending on your state, the energy efficiency of the system you choose, and whether you’re replacing an existing gas heating system.

    Because rebate programs can change, your installer or energy provider can advise on what’s currently available in your area and help you understand your eligibility.

• Mulit-Split Systems >
  • What is a Multi-Split system air conditioner? >

    A Multi-Split system allows multiple indoor units (usually 2–5 rooms) to be connected to one outdoor unit.

    This means you can heat or cool several rooms without needing multiple outdoor units outside your home.

  • When is a Multi-Split system a good option? >

    A Multi-Split system is ideal if:

    • You want to condition several rooms
    • There’s limited space for outdoor units
    • Body corporate or council rules restrict outdoor units
    • You want a neater exterior appearance
  • How do I choose the right size Multi-Split system? >

    Sizing is based on:

    • Room sizes
    • Number of indoor units
    • How many rooms will run at the same time

    Outdoor units are usually sized at less than the total of all indoor units, assuming not all rooms are used at once. Correct sizing is critical for comfort and efficiency.

  • Can all rooms run at the same time? >

    Yes – but total performance depends on the outdoor unit capacity.

    If all indoor units run together:

    • The system shares available capacity
    • Rooms may take longer to reach temperature

    An installer will size the system to match your usage patterns.

  • Can each room be set to a different temperature? >

    Yes. With a Multi-Split system, each indoor unit has its own controller, allowing you to customise comfort in every room. You can turn rooms on or off individually and set different temperatures to suit each space.

    However, all connected rooms must operate in the same mode at the same time – either cooling or heating. For example, you can’t have one room cooling while another is heating.

  • Are Multi-Split systems energy efficient? >

    They can be very efficient when:

    • Only a few rooms are running
    • Inverter technology is used

    However, if all rooms run constantly, multiple single splits may be more efficient.

  • Is a Multi-Split system more cost-effective than multiple Single-Split units? >

    It depends on your needs:

    MULTI-SPLIT SYSTEMS
    • Sleeker look with fewer outdoor units
    • Often higher upfront cost
    • Installation can be more complex

    MULTIPLE SINGLE-SPLIT SYSTEMS
    • Typically lower overall cost
    • Can perform better if all rooms are running at once
    • Provides redundancy – if one unit fails, the others keep working

    Your installer can help determine which option best fits your home and budget.

  • What types of indoor units can be connected? >

    Depending on the brand:

    • Wall mounted units
    • Floor consoles
    • Bulkhead or ceiling units (limited combinations)

    Not all combinations are compatible — this must be confirmed at design stage.

  • Are Multi-Split systems noisier than Single-Split systems? >

    No – indoor noise levels are similar to standard split systems.

    Outdoor units may be slightly larger but are still designed to meet residential noise regulations.

  • How much does a Multi-Split system cost? >

    Costs vary depending on:
    • Number of indoor units
    • Capacity of the outdoor unit
    • Installation complexity

    As a guide:
    • 2–3 indoor units: $5,000–$8,000 installed
    • 4–5 indoor units: $8,000–$12,000+ installed

    Prices vary by brand and site conditions.

  • Is installation of a Multi-Split system more complex than a standard Split system? >

    Yes. Multi-Split systems need:

    • Careful pipework design
    • Correct refrigerant balancing
    • Experienced installers

    Professional design and installation are essential to ensure your system runs efficiently and reliably.

  • Can I add more indoor units later? >

    Usually not. Most Multi-Split systems have a fixed number of connections and limited spare capacity. If you think you may want to expand in the future, it’s best to plan for it when the system is first installed.

  • What happens if the outdoor unit breaks down? >

    If the outdoor unit fails, all connected indoor units will stop working until it’s repaired. This is an important factor to consider when comparing Multi-Split systems with multiple Single-Split units.

  • How long do Multi-Split systems last? >

    With proper installation and maintenance:

    • 10–15 years is typical

    Regular servicing is especially important due to system complexity.

• Ducted Systems >
  • What is a Ducted air conditioning system? >

    A Ducted system uses one central indoor unit connected to a network of ducts in the ceiling or under the floor to heat or cool multiple rooms at once.

    Air is delivered through discreet ceiling or floor vents, keeping the system largely hidden.

  • When is Ducted air conditioning a good option? >

    Ducted air conditioning is ideal if:

    • You want whole-home comfort
    • You’re building or renovating
    • You prefer a clean, uncluttered look
    • You want to heat or cool many rooms at the same time
  • How do I choose the right size Ducted air conditioning system? >

    Correct sizing is critical and is based on:

    • Total floor area
    • Ceiling height
    • Insulation and glazing
    • Orientation and climate zone

    Installers use a whole-of-home heat load calculation to determine the correct system size.

  • Can Ducted air conditioning systems heat as well as cool? >

    Yes. Rinnai Ducted systems are reverse-cycle, providing efficient heating in winter and cooling in summer.

    They are often cheaper to run than traditional gas heating.

  • Is Ducted air conditioning better than Split systems? >

    It depends on your lifestyle and comfort needs.

    Ducted systems are ideal if you want whole-home comfort, prefer a clean, discreet look, and regularly use multiple rooms. Split systems are better suited if you only need to heat or cool specific rooms, want lower upfront costs, or are adding air conditioning gradually to an existing home.

  • How energy efficient are Ducted air conditioning systems? >

    Modern Ducted systems are highly efficient when:

    • Correctly sized
    • Zoned properly
    • Used with insulated ductwork

    Efficiency varies by brand and model, so energy star ratings matter.

  • Can I control different rooms separately with a Ducted air conditioning system? >

    Yes. With zoning, you can customise comfort throughout your home to suit how you live. Zoning allows you to turn specific areas on or off, set different temperatures in separate zones (when paired with smart controls), and reduce running costs by only heating or cooling the rooms you’re actually using.

    Rinnai ducted air conditioning systems include zoning giving you greater control, flexibility and energy efficiency.

  • Can Ducted air conditioning be installed in an existing home? >

    Yes – Ducted systems can often be added to an existing home. Feasibility depends on factors like available roof or underfloor space, access for ductwork, and your home’s layout.

    A professional site inspection is usually needed to assess your home and confirm the best installation approach.

  • Is Ducted air conditioning expensive to run? >

    Running costs can vary depending on the size of your system, how many zones you’re using, your home’s insulation, and the unit’s energy efficiency rating. A properly sized and professionally installed system will help ensure you’re not using more energy than necessary.

    Modern features like zoning and inverter technology can significantly reduce running costs compared to older systems, as they allow you to condition only the areas you’re using and maintain temperature more efficiently.

  • How much does Ducted air conditioning cost? >

    The cost of installing Ducted air conditioning depends on several factors, including the size of your home, the number of zones you require, and how complex the installation is. Design requirements and roof space access can also influence the final price.

    As a general guide (fully installed):

    • Small homes: $9,000–$12,000
    • Medium homes: $12,000–$16,000
    • Large homes: $16,000+

    For an accurate quote tailored to your home and comfort needs, a professional assessment is recommended.

  • How long does Ducted air conditioning installation take? >

    Most Ducted systems can be installed within 1–3 days. Installation in new builds is usually quicker, while retrofitting an existing home may take a little longer due to additional work required to fit ducts and vents.

    Your installer can provide a more precise timeline based on your home and system design.

  • Are Ducted air conditioning systems noisy? >

    Not at all. Ducted systems are designed to be very quiet inside your home. The main unit is installed in the roof space or outdoors, and sound-insulated ducts help keep noise to a minimum at the vents, so you can enjoy a comfortable, peaceful environment.

  • Can Ducted air conditioning improve indoor air quality? >

    Yes. Many Ducted systems are designed to help keep the air in your home cleaner and healthier. Features may include high-grade air filters and, depending on the model, optional air purification or fresh air functions.

    To maintain optimal air quality, it’s important to clean or replace filters regularly as part of your system’s routine maintenance.

  • Can I adjust the fan speed on my Ducted air conditioning system? >

    In some operation modes, you cannot adjust the fan speed. To change the fan speed, select an operation mode that supports this feature.

    For detailed instructions, please refer to the operation manual of your controller, as fan speed adjustment options vary depending on the model and mode.

  • How long does a Ducted air conditioning system last? >

    With correct installation and maintenance:

    • 12–20 years is typical

    Ducting may last longer than the mechanical components.

  • Are rebates available for Ducted air conditioning systems? >

    You may be eligible for rebates or government incentives when installing a Ducted system, depending on where you live and the type of system you choose. Availability can vary by state or territory, the energy efficiency rating of the unit, and whether you’re upgrading or replacing an existing gas heating system.

    Because rebate programs change over time, your installer can provide up-to-date advice and help you understand what incentives may be available for your home.

• Mini VRF Systems >
  • What is a Mini VRF air conditioning system? >

    A Mini VRF system is an advanced air conditioning system that connects multiple indoor units to one compact outdoor unit.

    It’s similar to a Multi-Split system, but with smarter control, better efficiency and more flexibility, especially when multiple rooms are used at the same time.

  • How is Mini VRF different from a Multi-Split system? >

    While both systems connect multiple indoor units to one outdoor unit – Mini VRF systems offer:

    • Better performance when many rooms run at once
    • More precise temperature control
    • Greater flexibility in indoor unit types
    • Longer pipe runs and better layout options

    They are often used where a standard Multi-Split reaches its limits.

  • When is a Mini VRF system a good option? >

    Mini VRF systems are ideal if:

    • You want to condition multiple rooms independently
    • Outdoor unit space is limited
    • You want higher performance than a Multi-Split
    • You’re renovating or building a premium home
    • You want a system that can grow with your needs
  • Is Mini VRF better than Ducted air conditioning? >

    It depends on your priorities.

    MINI VRF is best if you want:
    • Room-by-room control
    • Different unit styles in different rooms
    • Premium performance without ductwork

    DUCTED is ideal if you want:
    • A single, hidden solution
    • Whole-home airflow
    • Lower upfront cost

  • Is Mini VRF suitable for residential homes? >

    Yes. Mini VRF systems are commonly used in:

    • Large homes
    • Townhouses
    • Luxury apartments
    • Mixed-use residential spaces

    They bridge the gap between Ducted and Split systems.

  • Is Mini VRF quieter than other systems? >

    Yes. Mini VRF systems are designed for:

    • Very quiet indoor operation
    • Smooth, steady output rather than on/off cycling

    This makes them well suited to bedrooms and living areas.

  • Is a Mini VRF system energy efficient? >

    Yes. Mini VRF systems are highly energy efficient, particularly when:

    • Multiple rooms are used at once
    • Loads vary throughout the day

    They deliver only the amount of heating or cooling each room needs, reducing wasted energy.

  • Can each room be controlled independently? >

    Yes. Each indoor unit has:

    • Its own controller
    • Individual temperature settings
    • On/off control by room

    Depending on the system, some Mini VRF setups can also heat and cool different rooms at the same time.

    Note: The current Rinnai model can only heat different rooms at the same time, or cool different rooms at the same time.

  • Can Mini VRF heat and cool at the same time? >

    Some Mini VRF systems can:

    • Heat one room
    • Cool another room simultaneously

    This depends on the specific model and system design and is a major advantage over Multi-Split systems.

    Note: The current Rinnai model can only heat different rooms at the same time, or cool different rooms at the same time.

  • How much does a Mini VRF system cost? >

    Mini VRF systems have a higher upfront cost than Split or Multi-Split systems, but offer greater performance and control.

    As a general guide:

    • Small systems: $10,000–$15,000 installed
    • Larger systems: $15,000–$25,000+ installed

    Costs depend on number of indoor units, capacity and installation complexity.

  • What types of indoor units can be used? >

    Mini VRF systems can connect to a wide range of indoor units, including:

    • Wall mounted units
    • Slim bulkhead units
    • Ceiling cassettes
    • Floor consoles

    This makes them very flexible for design and aesthetics.

  • How many indoor units can connect to one system? >

    This depends on the outdoor unit size, but typically:

    • 4 to 10 indoor units for Mini VRF systems

    An installer will design the system to match how the home is used.

  • Is installation more complex than other systems? >

    Yes. Mini VRF systems require:

    • Specialist design
    • Experienced installers
    • Careful commissioning

    This ensures the system performs as intended.

  • What happens if the outdoor unit fails? >

    If the outdoor unit stops working:

    • All connected indoor units may be affected

    However, VRF systems are highly reliable when installed correctly and serviced regularly.

  • How long does a Mini VRF system last? >

    With professional installation and maintenance:

    • 15–20 years is typical

    This is often longer than standard Split systems.

• Portable Systems >
  • How do Portable air conditioners work? >

    Portable air conditioners operate similarly to traditional air conditioning systems, but all components – including the evaporator and condenser – are housed within a single compact unit. In a split system, the evaporator coil inside the room absorbs heat and moisture from the air, while the condenser coil outside releases that heat into the outdoor environment.

    In contrast, a portable air conditioner performs both functions within the same unit. Because the condenser is internal, it’s essential to correctly install the exhaust duct provided with the unit. This duct allows the hot air collected by the condenser to be expelled outside through a window or vent. Without proper exhaust setup, the unit cannot effectively cool the room.

  • How much condensation do Portable air conditioners produce? >

    Condensation occurs when warm, humid room air comes into contact with the cold evaporator coil inside the unit. The moisture in the air condenses on the coil’s surface, forming water that must be disposed of. The amount of condensation produced depends on several factors, including:

    • Room humidity levels
    • Airflow over the coil
    • Ambient temperature
    • Filter cleanliness and airflow obstructions

    Because these environmental conditions vary, it’s not possible to specify an exact volume of water produced.

    Rinnai’s current portable air conditioner models use a self-evaporative system that automatically expels most condensation through the exhaust duct. Under normal conditions, manual drainage is not required.

    However, in high humidity environments, excess condensation may accumulate. In such cases:
    • Manual drainage may be necessary.
    • Some models feature a water alarm to alert users when the internal tank is full.
    • Restricted airflow, such as blocked filters or obstructions, can increase condensation levels.

    Note: Always read the operation manual that comes with your unit to ensure it performs at its best.

  • Do I have to empty or drain the condensation from my Portable air conditioner? >

    Rinnai’s current portable air conditioner models use a self-evaporative system that automatically expels most condensation through the exhaust duct. Under normal operating conditions, manual drainage is not required.

    However, in high humidity environments, excess condensation may accumulate. In such cases:

    • Manual drainage may be necessary
    • Some models feature a water alarm to alert users when the internal tank is full
    • Restricted airflow, such as blocked filters or obstructions, can increase condensation levels and the need for drainage

    Note: Always refer to the operation manual provided with your unit for specific guidance on drainage and maintenance.

  • What modes are available on the Portable air conditioner systems? >

    The available operating modes vary slightly depending on the model:

    • 2.6kW, 3.4kW, 4.1kW: AUTO, COOL, DRY, FAN
    • 3.5kW: AUTO, COOL, DRY, FAN, HEAT

    Each mode serves a specific purpose:

    • AUTO: Automatically adjusts settings based on room conditions
    • COOL: Cools the room to the set temperature
    • DRY: Dehumidifies the air without significant cooling
    • FAN: Circulates air without heating or cooling
    • HEAT (3.5kW only): Provides heating for year-round comfort
  • What size Portable air conditioner do I need for my space? >

    Choosing the right size portable air conditioner depends on your room’s dimensions, insulation, and local climate. Below are the recommended room size ranges for each Rinnai model. This is a general guide only, as climatic conditions vary across Australia:

    • 2.6kW (RPC26MCWF): Suitable for rooms 11–20m²
    • 3.4kW (RPC34MCWF): Suitable for rooms 12–24m²
    • 3.5kW (RPC35PDRWF): Suitable for rooms 12–24m²
    • 4.1kW (RPC41MCWF): Suitable for rooms 13–30m²

    For best performance
    • Ensure the room is well-insulated.
    • Install the exhaust duct correctly.
    • Avoid using an undersized or oversized unit, as this can lead to inefficient cooling and increased energy consumption.

  • How noisy are Portable air conditioners? >

    The noise level of Rinnai portable air conditioners varies slightly by model. Below are the approximate sound levels during operation:

    • 2.6kW (RPC26MCWF): 64 dB
    • 3.4kW (RPC34MCWF): 65 dB
    • 3.5kW (RPC35PDRWF): 62 dB
    • 4.1kW (RPC41MCWF): 64 dB

    Note: These levels are typical for portable air conditioners and are comparable to the sound of normal conversation or background office noise. While Rinnai units are relatively quiet, they may not be suitable for noise-sensitive environments such as bedrooms or nurseries, especially during sleep hours.

    Noise levels can also vary depending on fan speed, operating mode and room acoustics and layout.

  • How do I install a Portable air conditioner? >

    Installing a Rinnai Portable air conditioner is straightforward. Follow these steps:

    1. Choose a suitable location
    • Place the unit on a flat, dry surface
    • Maintain 500mm clearance from walls or other appliances
    • Ensure easy access to a power outlet
    • Keep air outlets and ducting unobstructed

    2. Assemble the exhaust duct
    • Attach the duct to unit adaptor to the exhaust outlet
    • Screw the exhaust duct into the adaptor
    • Connect the window exhaust duct adaptor to the other end

    3. Install the exhaust duct
    • Window installation: Use the adjustable slider kit for vertical or horizontal windows. Seal gaps with foam strips.
    • Wall installation (optional): Requires separately purchased wall adaptors and must be installed by an authorised person in accordance with building codes.

    IMPORTANT: Keep the exhaust duct short and straight to avoid kinks and airflow restrictions.

    4. Manage condensate
    • The unit has an internal condensate tank. If full, it will display a ‘P1’ error code and stop operating.
    • Drain the tank using a shallow tray under the drain outlet.
    • Alternatively, connect a condensate drain hose to direct water into a tray or waste outlet (must be lower than the drain point).

    Note: These steps are a general guide. Always refer to the installation instructions provided with your unit before installing your Portable air conditioner.

  • Do I need a technician to install a Portable air conditioner? >

    No, you do not need a licensed tradesperson to install a Rinnai Portable air conditioner. These units are designed for DIY installation, and only require basic assembly and setup steps. As long as you follow the instructions provided in the user manual, most users can install the unit themselves with basic DIY skills.

    Tip: Always refer to the installation guide included with your unit to ensure safe and correct setup.

• Evaporative Cooler >
  • How does Evaporative Cooling work? >

    Evaporative cooling works by drawing warm outside air through water-saturated filter pads. As the air passes through the pads, the water evaporates, which lowers the air temperature. This 100% fresh, cooled air is then circulated throughout your home.

    THINGS TO CONSIDER

    1. For best performance
    • Evaporative coolers work most effectively on hot, dry days.
    • On humid days, cooling efficiency may be reduced.

    2. Ventilation is essential
    • To ensure proper operation, windows or doors must be open while the cooler is running.
    • This allows warm indoor air to be pushed out as the cooler introduces fresh air.

    3. Air movement
    • The movement of cooled air through your home helps draw out heat, improving comfort and airflow.
    • Proper ventilation is critical – without it, the cooler cannot function efficiently and may increase indoor humidity.

  • What size Evaporative Cooler do I need for my house? >

    Rinnai/Brivis advises that evaporative coolers must be sized appropriately to suit the specific build and layout of your home. Factors such as the following all affect the correct sizing and performance of the cooler:

    • Ceiling height
    • Insulation levels
    • Room volume
    • Local climate

    WHY A SITE VISIT IS IMPORTANT
    Due to the above variables, Rinnai/Brivis does not recommend cooler sizes without an on-site assessment. A licensed installer or sales representative can evaluate your home and recommend the most suitable model.

    Arrange a consultation
    • Contact Rinnai Customer Service to book a consultation.

  • Can I run heating through the same Ductwork as my Evaporative Cooler? >

    No. Evaporative cooling and Ducted heating use different technologies and require different ductwork designs.

    Evaporative coolers need larger ducts to handle high airflow volumes, while ducted heating systems use smaller ducts optimised for warm air distribution. Sharing ductwork between the two systems is not recommended and may result in poor performance or system damage.

  • How should I use my Evaporative Cooler? >

    To get the best performance from your Evaporative cooler, follow these key usage tips. For detailed instructions on using your controller or managing ventilation, refer to your operation manual.

    1. Use on hot, dry days
    • Evaporative cooling works best in hot and dry conditions. On humid days, cooling efficiency may be reduced.

    2. Ensure proper ventilation
    • Always open windows or doors when the cooler is operating.
    • This allows warm air to escape and fresh, cooled air to circulate effectively.
    • Without ventilation, humidity can build up indoors, reducing comfort and performance.

    3. Maximise airflow
    • Ensure vents are directing air across the ceiling, not directly onto the floor.
    • This helps distribute cool air evenly and improves heat extraction from the home.

    4. Use ‘fan-only’ mode when needed
    • On days with high humidity, consider using the ‘fan-only’ mode to circulate air without adding moisture.
    • Refer to your controller’s manual for instructions on switching modes.

    5. Regular servicing
    • Service your cooler every two years to maintain efficiency and prevent mineral build-up.
    • Contact Rinnai Customer Service to book a service.

  • How much water does a Evaporative Cooler use? >

    The amount of water used by a Evaporative cooler depends on the evaporation rate of the cooler’s pads. The more water the cooler can evaporate under given conditions and airflow, the greater its cooling potential.

    Factors that affect water usage
    • Weather conditions (temperature and humidity)
    • Cooler size and capacity
    • Fan speed or air velocity through the pads
    • Type and condition of filter pad material

    Water management features
    • In addition to evaporating water for cooling, Evaporative coolers also displace water to maintain water quality. This helps prevent mineral build-up and protects the pads and internal components from premature deterioration.

    Note: Water usage will vary day-to-day depending on environmental conditions and how long the cooler runs.

  • Can I run my Evaporative Cooler when I am not home? >

    Evaporative cooling relies on doors and/or windows being open so you can run it when you are not home, provided you have the required ventilation openings.

  • Is it safe to use my Evaporative Cooler during poor air quality (e.g., bushfire season)? >

    No, it is not recommended to use your Evaporative cooler during periods of poor outdoor air quality, such as during bushfires or heavy smoke events.

    Evaporative coolers work by drawing in outside air, cooling it through water-saturated pads, and then circulating it indoors.

    If the outside air contains smoke, ash, or other pollutants, these can be pulled into your home, potentially compromising indoor air quality and posing health risks – especially for children, the elderly, or those with respiratory conditions.

    What to do instead
    • Keep windows and doors closed during poor air quality events.
    • Use alternative cooling methods such as reverse cycle air conditioning or portable air purifiers if available.
    • Monitor local air quality alerts and follow health advice from authorities.

  • What’s the difference between ‘Manual Mode’ and ‘Auto Mode’ on my NC6 or NC7 Controller? >

    Your Brivis NC6 or NC7 controller offers two modes of operation: ‘Manual Mode’ and ‘Auto Mode’. Each provides a different level of control over your evaporative cooler.

    Manual Mode
    • You have full control over the cooler’s operation.
    • You can manually turn the fan ON/OFF, adjust fan speed, and control the water pump.
    • Useful when you want to fine-tune settings based on personal preference or changing conditions.
    • For detailed instructions on using and switching between modes, please refer to your operation manual.

    Auto Mode (Automatic Operation)
    • The controller automatically manages the cooler’s operation.
    • It turns the water pump ON/OFF as needed.
    • It adjusts the fan speed to maintain your selected comfort level.
    • Ideal for set-and-forget operation with consistent cooling performance.

  • What is included in a Rinnai/Brivis Evaporative Cooler service? >

    A comprehensive service helps maintain your cooler’s performance, hygiene, and longevity. It should be carried out by an authorised technician trained in Rinnai/Brivis systems to ensure warranty compliance.

    Service checklist

    • Inspect filter pads for holes or deterioration → Replace pads if they’ve lost water absorption ability
    • Clean the tank and internal surfaces
    • Flush and clean filter pads
    • Power up the unit with pads in position and test operation
    • Check water pump operation and ensure even water distribution across pads
    • Inspect water inlet for correct operation
    • Verify water system maintains minimum and maximum levels
    • Check water pressure to ensure the tank fills within the allotted time
    • Test fan operation and confirm speed variation via wall controller
    • Contour and Advance Series – Check ServoSeal damper mechanism opens and closes correctly

    IMPORTANT: To maintain your warranty, servicing must be performed by an authorised Rinnai/Brivis technician.

    Reach out to Rinnai Customer Service to make a service call booking.