7 kWRinnai T Series 7kW Split System
The 7kW Rinnai T Series Split (system HSNRT70B: indoor HINRT70B, outdoor HONRT70B) is sized for large living rooms and open-plan areas. As a guide, it cools a room of up to about 51 to 58 m². That is from Mitsubishi Heavy Industries' sizing chart for an insulated room: the larger figure if it faces north, the smaller if it faces east. Western sun, poor insulation and high ceilings bring it down. If the space is bigger or sun-exposed, step up to the 8kW.
Part of the Rinnai T Series Split range, Rinnai's split system line, in 5 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 7 kW options, see every 7kW split system ranked by running cost, or ask about supply and installation.
About $555 a year at the current Sydney median electricity rate: $184 of cooling plus $371 of heating, from the official GEMS test figures.
The Rinnai T Series 7kW uses 554 kWh per year for cooling and 1119 kWh per year for heating, based on official GEMS registration testing in Sydney's climate zone. The system carries a 3.5-star energy rating for cooling and 2-star rating for heating under the zoned label standard. Your actual running costs will depend on how often you use the system and your local electricity rate.
The Rinnai T Series has a rated cooling efficiency (AEER) of 3.51 and heating efficiency (ACOP) of 3.41. It uses R32 refrigerant. Running costs are calculated by multiplying the annual energy figures above by your current electricity rate, which varies by retailer and plan.
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 T Series Split range| Brand | Rinnai |
|---|---|
| Model | HINRT70B / HONRT70B |
| Series | Rinnai T Series Split |
| System type | Split System |
| Capacity | 7 kW |
| Refrigerant | R32 |
