Superior technology

• Ideal for use in the larger open plan areas
• Wi-Fi Control –allows for convenient control from anywhere with the NetHome Plus App⁺ (App available from the Apple Store or Google Play)
• Inverter Technology – to maintain consistent temperature and reduce running costs
• Convenient and simple to use LCD wireless remote control
• Quiet operation
• Heating and cooling functionality
• Turbo function – quickly cools in summer and swiftly warms in winter
• Timer functionality to turn the appliance on or off when needed

Multi variants - Outdoor units

• MON3H07B - 3 Indoor Units connected
• MON4H09B - 4 Indoor Units connected
• MON5H11B - 5 Indoor Units connected
• MON5H13B - 5 Indoor Units connected
• MON6H18B - 6 Indoor Units connected

Rinnai quality

• 7 year limited warranty*

Download NetHome Plus App

FAQs

• 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.

• 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.

• 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.

*For full warranty terms and conditions refer to the related warranty booklet.

⁺Rinnai uses a third-party application (App) to enhance your experience of the Rinnai product. You may use the App at your sole discretion. Please note that when you download and use the App and its services, the third-party’s privacy policy and terms and conditions of service will apply. By using the Rinnai product through this App, you acknowledge and agree that: The third-party App may collect, store, and process your personal information according to its own privacy policy and App terms and conditions. Rinnai does not control and are not responsible for the content, policies, or practices of the third-party App and its services. Rinnai strongly recommends that you review the App privacy policy before using its features. The use of the third-party App is optional. For further information or clarification, please contact us at 1300 555 545 and [email protected]

NB: Reverse cycle air-conditioners are an effective solution as they provide both cooling and heating and are highly efficient. However, unlike gas heaters, their heating capacity will reduce with colder ambient temperatures, which is especially relevant for homes in colder areas. Discuss with your installer things like the local climate, the size of your house, its orientation and construction (such as glazing, doors, insulation), and your expectations, so a system with the appropriate capacity can be selected.

The product information on this website (comprising product brochures, warranty information, installation manuals, diagrams, specifications and representations) relates to current products. This information may be different for superseded products. For superseded products please contact Rinnai to confirm product information.

Product codes:
Outdoor: 3 - MON3H07B | 4 - MON4H09B | 5 - MON5H11B | 5 - MON5H13B | 6 - MON6H18B
Indoor Compact Cassette: 2.0 - CIN020RMB | 2.6 - CIN026RMB | 3.5 - CIN035RMB | 5.0 - CIN050RMB