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Aircon Energy Cost Estimator

Find out exactly how much your aircon adds to your TNB bill each month — and see how much you could save with an inverter upgrade.

Aircon Energy Cost Estimator

Based on TNB domestic tariff rates

1h8h16h24h
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Uses TNB domestic tariff: RM0.218–RM0.571/kWh based on monthly usage

Estimates based on TNB tariff rates and typical AC performance. Actual costs vary with usage patterns, AC condition, and outdoor temperature.

How the Calculation Works

The estimator uses the actual TNB domestic tariff tiers to calculate your monthly aircon electricity cost. Unlike a flat-rate estimate, this accounts for how TNB charges more per kWh as your total usage increases.

TNB Domestic Tariff Tiers (2024)

Monthly Usage Rate (RM/kWh)
First 200 kWhRM 0.218
201–300 kWhRM 0.334
301–600 kWhRM 0.516
601–900 kWhRM 0.546
Above 900 kWhRM 0.571

Source: TNB (Tenaga Nasional Berhad) domestic tariff schedule.

Inverter vs Non-Inverter — The Real Difference

A standard (non-inverter) compressor runs at full speed and switches on/off repeatedly to maintain temperature, drawing peak power each time it starts. An inverter compressor adjusts its speed continuously — using only as much electricity as needed to maintain the set temperature. This typically reduces energy consumption by 25–40% for the same cooling output.

For a 1.5 HP unit run 8 hours/day for 30 days, the difference is roughly RM 30–50 per month — RM 360–600 per year. Over 10 years, the inverter premium pays back many times over.

Tips to Lower Your Aircon Bill

  • Chemical wash every 12–18 months: A dirty evaporator coil forces the compressor to work harder, increasing electricity consumption by 15–25%.
  • Set to 24–26°C: Each degree lower increases energy use by approximately 8%.
  • Use timer mode: Pre-cool the room before sleep rather than running all night.
  • Check for refrigerant leaks: Low refrigerant means the system runs longer to reach temperature.

Is Your AC Running Efficiently?

A chemical wash can cut energy consumption by 15–25%. WhatsApp us for a same-day service across Petaling Jaya.

Book a Chemical Wash