2.5 kWDaikin Alira X 2.5kW Split System
The 2.5kW Daikin Alira X Split System is sized for standard bedrooms and small home offices. As a guide, it cools a room of up to about 18 to 21 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 sits in the lower half of the Daikin Alira X Split System range. If the space is bigger, has high ceilings or strong afternoon sun, step up to the 3.5kW.
Part of the Daikin Alira X Split System range, Daikin's split 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 2.5 kW options, see every 2.5kW split system ranked by running cost, or ask about supply and installation.
About $148 a year at the current Sydney median electricity rate: $46 of cooling plus $102 of heating, from the official GEMS test figures.
The Daikin Alira X 2.5kW uses 139 kWh annually for cooling and 307 kWh annually for heating, based on official GEMS test data for Sydney's climate zone. The system carries a 5.5-star energy rating for cooling and 4-star rating for heating under the zoned energy label. These ratings reflect tested efficiency in Sydney conditions.
The Daikin Alira X achieves a rated cooling efficiency (AEER) of 5.27 and heating efficiency (ACOP) of 5.57. The unit uses R32 refrigerant. Your actual running costs will depend on how often you run the system and your local electricity rate.
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 Daikin Alira X Split System range| Brand | Daikin |
|---|---|
| Model | FTXM25AVMA / RXM25AVMA |
| Series | Daikin Alira X Split System |
| System type | Split System |
| Capacity | 2.5 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
