2.6 kWActronAir Serene 2.6kW Split System
The 2.6kW ActronAir Serene Split (model WRE-026DS) is sized for standard bedrooms and small home offices. As a guide, it cools a room of up to about 19 to 22 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 smallest capacity in the range. If the space is bigger or sun-exposed, step up to the 3.5kW.
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 2.6 kW options, see every 2.5kW split system ranked by running cost, or ask about supply and installation.
About $134 a year at the current Sydney median electricity rate: $44 of cooling plus $90 of heating, from the official GEMS test figures.
The ActronAir Serene 2.6kW uses 133 kWh annually for cooling and 271 kWh annually for heating, based on official GEMS registration testing for Sydney's climate zone. These figures reflect typical usage patterns and allow you to calculate running costs using your current electricity rate. The system achieves a cooling efficiency rating of 6.5 stars and heating efficiency of 3.5 stars under the same standardised test conditions.
The unit's rated cooling efficiency (AEER) is 5.38 and heating efficiency (ACOP) is 5.39, meaning it delivers significantly more heating or cooling energy than the electrical energy it consumes. It uses R32 refrigerant. Your actual running costs will depend on your usage patterns and local electricity rates.
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-026DS |
| Series | ActronAir Serene Split |
| System type | Split System |
| Capacity | 2.6 kW |
| Refrigerant | R32 |
| Controller | WRC series |
