Free Tool
AC Energy Cost Estimator
Find out what your aircon is costing you each month — and how much you could save by switching to an inverter unit.
Understanding Your AC Electricity Costs
The Formula
Daily kWh = Watts × Hours ÷ 1,000
Monthly Cost = Daily kWh × Days × Rate
SP Group tariff: S$0.28/kWh (regulated, incl. GST)
Inverter vs Non-Inverter
A 5-star inverter aircon uses ~30% less electricity than a standard 3-star unit because it varies its compressor speed instead of cycling on/off. Over a year, that saving is substantial.
💡 Quick Benchmark
A typical 1.5 HP 3-star aircon running 8 hours/day costs around S$30–S$40/month. Upgrading to an inverter unit of the same size could bring that down to S$21–S$28/month — saving S$120–S$150 per year per unit.
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