3.4 kWFujitsu Comfort 3.4kW Split System
The 3.4 kW size of the Fujitsu Comfort Split cools a room of up to about 25 to 29 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 3.4 kW options, see every 3.5kW split system ranked by running cost, or ask about supply and installation.
About $262 a year at the current Sydney median electricity rate: $90 of cooling plus $172 of heating, from the official GEMS test figures.
The Fujitsu Comfort 3.4kW uses 273 kWh per year for cooling and 518 kWh per year for heating under official GEMS test conditions for Sydney's climate zone. These figures reflect average household use and allow you to calculate running costs against current electricity rates. The system achieves a cooling efficiency rating of 3.5 stars and a heating efficiency rating of 2.5 stars.
Efficiency is measured by AEER (annual energy efficiency ratio) for cooling at 3.53 and ACOP (annual coefficient of performance) for heating at 3.99. The Fujitsu Comfort 3.4kW uses R32 refrigerant. Your actual energy consumption will depend on usage patterns, thermostat settings and installation quality.
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 | ASTH12KNCA |
| Series | Fujitsu Comfort Split |
| System type | Split System |
| Capacity | 3.4 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
