Geoflo Hybrid

Supremely Efficient Heating, Cooling, and Hot Water

Harness the abundant free renewable energy right under your feet with the all-new Rinnai Geoflo Hybrid and save up to 50% on your energy costs. Rinnai’s unique Geoflo Hybrid Geothermal system utilises this renewable energy source via a ground loop heat exchanger to reliably deliver highly efficient heating and cooling to achieve your desired level of comfort. Best of all, when in operation, in addition to beautifully heating and cooling your home, Rinnai's revolutionary Geoflo Hybrid technology works to divert surplus energy to your hot water storage tank, effectively delivering free hot water.

In addition, the Geoflo Hybrid comes with the peace of mind knowing you are protected by a 5 year limited warranty for the heat pump and a 5 year warranty on the geothermal well (an optional 5 year extended warranty on the geothermal well is also available).

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How Geothermal works

Click on the video to discover how the Rinnai Geoflo geothermal technology works, and an explanation of how the heat pump extracts green renewable energy from the earth through a ground loop heat exchanger.

Renewable clean energy

Lower energy costs

Very quiet

Flexible design

Sustainable heating & cooling

5 year warranty

Renewable clean energy
Geothermal energy is extremely affordable and can cut electricity consumption by up to 50% in comparison to a traditional ducted reverse cycle air conditioning system. Geothermal system heating and cooling performance are maintained during extreme climate conditions eliminating high seasonal energy costs.
Very quiet
When looking for a heating and cooling system that is virtually noise-free, look no further than geothermal. Being very smooth and quiet in operation, geothermal systems rely on the temperature of the ground to heat and cool your home.
Flexible design
Geothermal heat pump systems are designed with the user in mind. Geothermal systems can be installed in either new or retrofit applications. Since the hardware requires a lot less space than traditional HVAC systems, you can instantly save yourself some storage space in your home by switching to a geothermal system.
Very durable
Geothermal systems have a relatively low level of moving parts. With high durability and reliability, geothermal systems are becoming the way of the future for many homeowners.


System Overview
Model Name DSGHW18Z1
Power Supply V – Ph – Hz 220- 240V, 1 phase, 50Hz
Cooling Rated Capacity kW 18.24*
Rated Input Power kW 4.52
Heating Rated Heating Capacity kW 18.16**
Rated Heating Input Power kW 4.5
Supplementary Hot Water Energy Output (Use To size PTR) kW 10.00***
Supplementary Hot Water COP/ 4.0
Average Water Production Rate L/h 200***
Refrigerant R410A
Refrigerant Pipe – Suction (Adaptor Supplied 3/4 “ To 7/8” for long pipe work 15 m+)
mm / inch 19mm ~ 3/4”
Refrigerant Pipe – Liquid (Both to air handler and earth loop) 12.7 mm ~ 1/2”
Hot Outlet and Cold Return Connections (Adaptor Supplied 3/4 to 1/2 RP) ISO 7.1 ¾” RP3/4
Condensing Unit
Model Name DOGHW18Z1
Compressor Type Scroll
Oil Type Polyester (POE)
Breaker & wire size selection Amps 32 A
Rated Load Amps (RLA) 20.4 A
Dimensions (W x D x H) mm 660 x 500 x 1300
Weight (Net) kg 148
Operating Temperature Limits °C -65
Sound Level dBA 49
Drain Connection Inch 3 /4″ BSP
Indoor Fan Coil Unit
Model Name DIGEV18Z1
Maximum Input Current Breaker & wire size selection Amps 4.4
Rated Load Amps (RLA) Amps 10
Maximum Input Power kW 1.5
Dimensions (W x D x H) mm 1225 x 655 x 444
Weight (Net) kg 70
Air Flow @ 150 Pa L/s 750
Maximum External Static Pressure Pa 200
Return Air Duct Connection (L x W) mm 1072 x 406
Supply Air Duct Connection (L x W) mm 718 x 264
Rated Moisture Removal L/h 5.7
Heat Pump Storage Tank
Model Name SE315AB36
Cylinder Height mm 1770
Cylinder Diameter mm 605
Storage Tank Booster Heating Element Size kW 3.6
Weight Empty kg 92
Cold / Hot connection Inch ISO 7.1 ¾” RP
Rating of PTR Valve supplied kW 10
Heat Pump Flow & Return connection Inch ISO 7.1 1 /2 ” RP

Geothermal TVC

Click on the video to view the Rinnai Geoflo Hybrid geothermal television commercial, highlighting the savings and benefits of green geothermal energy.

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