AC Energy Cost Estimator
Find out how much your AC is adding to your TNB electricity bill each month — and how much you could save by upgrading to an inverter unit.
How the Cost Estimate is Calculated
The calculator uses Malaysia's real TNB tiered domestic tariff — not a flat average — so higher monthly usage is priced at higher marginal rates, just like your actual bill.
Actual wattage
Rated wattage × efficiency factor (inverter models draw ~30% less power than non-inverter).
Monthly kWh
Daily consumption (kWh) = wattage ÷ 1,000 × hours/day. Monthly = daily × days used.
TNB tiered cost
Each band of monthly kWh is charged at the respective TNB rate — the same calculation TNB uses for your monthly bill.
TNB Domestic Tariff (current rates)
Source: TNB (Tenaga Nasional Berhad) domestic tariff
A dirty AC uses up to 25% more electricity
Clogged fins force the compressor to work harder, raising your bill. A chemical wash typically restores 90–95% of original efficiency.
Learn about our chemical wash →