9 kWActronAir Serene 9kW Split System
The 9kW ActronAir Serene Split (model WRE-090DS) is sized for open-plan living and dining areas. As a guide, it cools a room of up to about 64 to 74 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. It is the largest capacity in the range.
Part of the ActronAir Serene Split range, ActronAir's split system line, in 6 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 9 kW options, or ask about supply and installation.
About $642 a year at the current Sydney median electricity rate: $227 of cooling plus $415 of heating, from the official GEMS test figures.
The ActronAir Serene 9kW uses 686 kWh annually for cooling and 1254 kWh for heating, based on official GEMS test data for Sydney's climate zone. These figures reflect standard test conditions and are used to calculate your running cost estimate, which updates with current electricity rates.
The system carries a 4-star cooling energy rating and 2.5-star heating rating for Sydney. It achieves an AEER of 3.53 for cooling and an ACOP of 3.71 for heating. The unit uses R32 refrigerant.
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 ActronAir Serene Split range| Brand | ActronAir |
|---|---|
| Model | WRE-090DS |
| Series | ActronAir Serene Split |
| System type | Split System |
| Capacity | 9 kW |
| Refrigerant | R32 |
| Controller | WRC series |
