4.2 kWFujitsu Comfort 4.2kW Split System
The 4.2 kW size of the Fujitsu Comfort Split, suiting roughly 27 to 34 square metres as a guide. We confirm sizing from your details and photos 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 4.2 kW options, or ask about supply and installation.
About $260 a year at the current Sydney median electricity rate: $97 of cooling plus $163 of heating, from the official GEMS test figures.
The Fujitsu Comfort 4.2kW uses 335 kWh per year for cooling and 564 kWh per year for heating under official GEMS test conditions for Sydney's climate zone. These figures reflect actual energy consumption in Sydney conditions and form the basis of the running cost estimate shown on this page, which updates with current electricity rates.
The system carries a 3.5-star cooling efficiency rating and 3-star heating efficiency rating for Sydney. It achieves a rated cooling efficiency (AEER) of 3.41 and heating efficiency (ACOP) of 4.15. The unit uses R32 refrigerant.
Source: Australian GEMS registry · median of 170 Sydney residential tariffs · Refreshed monthly · Last updated September 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 | ASTH14KNCA |
| Series | Fujitsu Comfort Split |
| System type | Split System |
| Capacity | 4.2 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
Other 4.2kW options
All split systems
Panasonic RZ 4.2kW
Model CS-RZ42XKR / CU-RZ42XKR. Value series, R32
Mitsubishi Electric MFZ-KW 4.2kW
Model MFZ-KW42VGK-A1. Floor mounted, Built-in Wi-Fi
Mitsubishi Electric MSZ-EF 4.2kW
Model MSZ-EF42VG. Three colours, Below 21dB