20 kWRinnai D Series Ducted 20kW Ducted System
The 20kW Rinnai D Series Ducted (model DINLR20Z7) is sized for large two-storey family homes. As a guide it covers roughly 133 to 160m² of conditioned floor area, depending on zoning, insulation and ceiling height. For a larger floor plan, the 24kW is the next step up.
Part of the Rinnai D Series Ducted range, Rinnai's ducted system line, in 7 sizes. Running costs below use the Sydney median rate; the Eastern Suburbs and Western Sydney pages cost systems on their own network tariffs. Check the size against your rooms, compare it with other 20 kW options, or ask about supply and installation.
About $1,729 a year at the current Sydney median electricity rate: $719 of cooling plus $1,010 of heating, from the official GEMS test figures.
The Rinnai D Series Ducted 20kW uses 2169 kWh per year for cooling and 3050 kWh per year for heating under official GEMS test conditions for Sydney's climate zone. These figures represent standard energy use under the government's regulated test procedure and will vary depending on your actual usage patterns, settings and home characteristics.
The system carries a 2-star energy rating for both cooling and heating under the zoned labelling scheme for Sydney. It achieves an AEER (cooling efficiency) of 3.27 and an ACOP (heating efficiency) of 3.56. Running costs depend on your local electricity rate applied to annual energy consumption.
Source: Australian GEMS registry · median of 170 Sydney residential tariffs, including GST · Refreshed monthly · Last updated October 2026
Specifications
From the manufacturer’s published range data. We confirm the exact configuration when we quote.
About the Rinnai D Series Ducted range| Brand | Rinnai |
|---|---|
| Model | DINLR20Z7 / DONSR20Z9 |
| Series | Rinnai D Series Ducted |
| System type | Ducted System |
| Capacity | 20 kW |
| Refrigerant | R32 |
Other 20kW options
All ducted systems
Daikin Inverter 20kW
Model FDYQN200LCV1 / RZQ200MY1. Whole home, Zoning ready
Toshiba Digital Inverter 20kW
Model RAV-RM2241DTP-E2 / RAV-GM2241AT8-A-3-PHASE. Medium & high static, Commercial grade
Samsung Premium 20kW
Model AC200JNHFKH. Premium tier, High capacity