# Free Aircon Energy Cost Calculator | Chill Pro Air-Cond & Refrigeration

> Estimate how much your aircon costs to run each month. Uses real TNB domestic tariff rates. Compare inverter vs non-inverter savings.

URL: https://acrepair.my/tools/energy-cost-estimator/

Free Tool

# 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

AC Unit Size1.0 HP / 9,000 BTU1.5 HP / 12,000 BTU2.0 HP / 18,000 BTU2.5 HP / 24,000 BTU3.5 HP / 36,000 BTU

Energy Efficiency RatingStandard (3-star)High Efficiency (4-star)Inverter (5-star)

Hours Used Per Day: 8h

1h8h16h24h

Days Used Per Month: 30 days

1102031

Electricity Rate

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 kWh | RM 0.218 |
| 201–300 kWh | RM 0.334 |
| 301–600 kWh | RM 0.516 |
| 601–900 kWh | RM 0.546 |
| Above 900 kWh | RM 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

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