5 kWActronAir Serene 5kW Split System
The 5kW ActronAir Serene Split (model WRE-050DS) is sized for living rooms and master suites. As a guide, it cools a room of up to about 36 to 43 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 7.2kW.
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 5 kW options, see every 5kW split system ranked by running cost, or ask about supply and installation.
About $334 a year at the current Sydney median electricity rate: $101 of cooling plus $233 of heating, from the official GEMS test figures.
The ActronAir Serene 5kW uses 306 kWh annually for cooling and 704 kWh annually for heating, based on official GEMS registration testing for Sydney's climate zone. These figures reflect typical usage patterns in Sydney and form the basis for the running cost estimate shown separately on this page.
The system carries a 5-star energy rating for cooling and a 3-star rating for heating under Sydney's zoned efficiency labelling. Its rated cooling efficiency (AEER) is 4.31 and heating efficiency (ACOP) is 4.02. 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-050DS |
| Series | ActronAir Serene Split |
| System type | Split System |
| Capacity | 5 kW |
| Refrigerant | R32 |
| Controller | WRC series |
