Free Tool
AC Energy Cost Estimator
Calculate your aircon's monthly electricity costs and see how much you could save by upgrading to an inverter unit.
Frequently Asked Questions
How much does it cost to run aircon in Singapore per month?
A typical 1.5 HP aircon running 8 hours a day at the current SP Group rate (~S$0.28/kWh) costs approximately S$30–40 per month. An inverter aircon with the same usage can reduce this to S$21–28/month.
What is the current electricity rate in Singapore?
The SP Group regulated electricity tariff fluctuates quarterly. As of 2025, the rate is approximately S$0.27–0.30/kWh. This calculator uses S$0.28/kWh as a conservative estimate, but you can enter your actual rate.
Do inverter aircons really save electricity?
Yes. Inverter aircons adjust their compressor speed to maintain temperature rather than switching on/off repeatedly. This typically results in 20–40% lower electricity consumption compared to non-inverter units.
How do I find my aircon's wattage?
Check the label on the side of your outdoor unit, or look up your model number in the manufacturer's specifications. The wattage is usually listed as "Power Input" in watts (W). A 1.5 HP standard unit typically consumes 1,400–1,600W.