2.5 kWFujitsu Comfort 2.5kW Split System
The 2.5 kW size of the Fujitsu Comfort Split cools a room of up to about 18 to 21 square metres as a guide. 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. We confirm sizing from your details and photos, or on a site visit, before quoting.
Part of the Fujitsu Comfort Split range, Fujitsu General'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 2.5 kW options, see every 2.5kW split system ranked by running cost, or ask about supply and installation.
About $182 a year at the current Sydney median electricity rate: $57 of cooling plus $125 of heating, from the official GEMS test figures.
The Fujitsu Comfort 2.5kW uses 171 kWh annually for cooling and 377 kWh annually for heating under official GEMS test conditions for Sydney's climate zone. These figures represent the system's measured energy consumption in your local climate and form the basis for running cost estimates. The system achieves a cooling efficiency rating of 4.5 stars and heating efficiency of 3 stars.
The Fujitsu Comfort 2.5kW operates at a rated cooling efficiency (AEER) of 4.22 and heating efficiency (ACOP) of 4.14. These efficiency metrics indicate how much cooling or heating output the system delivers per unit of energy consumed. The system uses R32 refrigerant, a low-GWP alternative to older refrigerant types.
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 Fujitsu Comfort Split range| Brand | Fujitsu General |
|---|---|
| Model | ASTH09KNCA |
| Series | Fujitsu Comfort Split |
| System type | Split System |
| Capacity | 2.5 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
