5 kWFujitsu Comfort 5kW Split System
The 5 kW size of the Fujitsu Comfort Split cools a room of up to about 36 to 43 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 5 kW options, see every 5kW split system ranked by running cost, or ask about supply and installation.
About $355 a year at the current Sydney median electricity rate: $136 of cooling plus $219 of heating, from the official GEMS test figures.
The Fujitsu Comfort 5kW uses 410 kWh annually for cooling and 662 kWh annually for heating, based on official GEMS testing for Sydney's climate zone. These figures account for typical usage patterns in Sydney and allow you to calculate running costs using your local electricity rate. The system achieves a cooling efficiency rating of 3.5 stars and a heating efficiency rating of 2.5 stars under the zoned energy labelling scheme.
The Fujitsu Comfort 5kW has a rated cooling coefficient of performance (AEER) of 3.46 and a heating coefficient of performance (ACOP) of 3.90. It uses R32 refrigerant. Your actual energy consumption will depend on how often you run the system, the temperatures you set, and your home's insulation and sealing.
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 | ASTH18KNTA |
| Series | Fujitsu Comfort Split |
| System type | Split System |
| Capacity | 5 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
