GREE GWC18ATEXF-K6DNA3B/O
5.45 kW · 4 green ticks
The outdoor unit of a single split system. Costs about $48 a month to run — here is how that compares with every other system its size on Singapore's NEA register.
Is the GWC18ATEXF-K6DNA3B/O expensive to run?
Not really — it's on the better side of average. Of the 16 systems on Singapore's register around this size, 6 cost less to run.
Runs at
$48/month
About $580 a year
Cheapest its size
$42/month
Daikin RZF50DVMG
Size group
5.0–5.9 kW
16 systems, all brands
That is about $7 a month more than the cheapest system its size, or roughly $820 over ten years — before you weigh purchase price, which often runs the other way.
Registered with the same figures as GREE GWC-18Charmo/O. On paper they are the same machine.
Cheaper systems the same size
Systems around the same size that cost less to run, closest in size first. Cheaper to run is not the same as the better buy — purchase price, indoor units, and how well it is installed all sit outside these figures.
| Model | Capacity | Green ticks | Runs at | You would save |
|---|---|---|---|---|
| Mitsubishi Electric SUY-ZM50VA-SG | 5.11 kW | 5 ticks | $43/month | $5/month |
| Hitachi PAS-2.0UFASNQ1 | 5.04 kW | 4 ticks | $43/month | $5/month |
| Daikin RZF50DVMG | 5.02 kW | 4 ticks | $42/month | $7/month |
Looking at the GWC18ATEXF-K6DNA3B/O for your home?
This is the outdoor half of a pair. The indoor unit is the half you live with, and it should be named before anything is agreed.
What to pin down before you commit
- The paired indoor model number — the unit that mounts in the room
- Whether the capacity suits that room, and how that was decided
- What happens to the existing piping, drainage and bracket
- Whether the old unit is being removed and disposed of
Figures are NEA energy-label records checked 22 Jul 2026, priced at the label's 27¢/kWh assumption. Your own bill depends on how you actually use it. Already have one installed and seeing a fault code? Look it up here, or compare every registered model. More on Gree systems, or read up on common aircon problems.
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