5 kWFujitsu Lifestyle 5kW Split System
The 5kW Fujitsu Lifestyle Split (model ASTG18KMTC) is sized for living rooms and master suites. As a guide it suits a typical insulated room of roughly 33 to 40m²; sun exposure and ceiling height move that band. It sits in the lower half of the Fujitsu Lifestyle Split range. If the space is bigger, has high ceilings or strong afternoon sun, step up to the 6kW.
The Fujitsu Lifestyle 5kW uses 344 kWh annually for cooling and 730 kWh annually for heating according to official GEMS test data for Sydney's climate zone. These figures reflect typical yearly operation in Sydney conditions. The system achieves a cooling efficiency rating of 4.5 stars and a heating efficiency rating of 2.5 stars. It has a rated cooling efficiency (AEER) of 4.30 and heating efficiency (ACOP) of 4.68.
Your running costs depend on your local electricity rate and how often you use cooling versus heating. The official annual energy consumption figures above let you calculate expected costs based on current Sydney rates. The unit uses R32 refrigerant and is sized at 5 kW cooling capacity.
Source: Australian GEMS registry · median of 170 Sydney residential tariffs · Refreshed monthly · Last updated June 2026
Specifications
From the manufacturer’s published range data. We confirm the exact configuration when we quote.
About the Fujitsu Lifestyle Split range| Brand | Fujitsu General |
|---|---|
| Model | ASTG18KMTC |
| Series | Fujitsu Lifestyle Split |
| System type | Split System |
| Capacity | 5 kW |
| Refrigerant | R32 |
| Warranty | 5 year parts & labour |
Fujitsu Lifestyle 5kW: your questions
How much does a 5kW split system cost installed?
The unit is only part of the cost. Installed price depends on whether it is a straightforward back to back installation or needs longer pipe runs, wall brackets or a condenser slab, plus any electrical work at the switchboard. We give fixed quotes by phone or email, and photos of the wall, the outdoor spot and your switchboard get you the sharpest number.
What size room does a 5kW air conditioner suit?
A 5kW split system suits roughly 32 to 40 square metres in a typical insulated room. Strong afternoon sun, high ceilings or big glass areas push you toward the next size up, and oversizing wastes money on short cycling. The capacity calculator sizes your room in under a minute, and we confirm before we quote.
How much does the Fujitsu Lifestyle 5kW cost to run?
Official government test figures for Sydney's climate zone put the Fujitsu Lifestyle 5kW at 344 kWh a year for cooling, which works out to about $119 a year at the current Sydney median electricity rate, and about $253 a year for heating. Your bill depends on your tariff and usage, but these are the registered figures, not estimates we made up.
Is the Fujitsu Lifestyle 5kW reverse cycle?
Yes. The registered model (ASTG18KMTC) heats and cools, so one system covers Sydney summers and winters. Its official heating figures for this climate zone are shown in the energy section above.
