# Free AC Energy Cost Estimator — Monthly Electricity Bill | iCare Aircon

> Estimate how much your air conditioner costs to run each month in Singapore. Uses SP Group tariff (S$0.28/kWh). See potential savings from upgrading to an inverter unit.

URL: https://coolbestaircon.com/tools/energy-cost-estimator/

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.

AC Unit Size1.0 HP / 9,000 BTU (~1,000 W)1.5 HP / 12,000 BTU (~1,500 W)2.0 HP / 18,000 BTU (~2,000 W)2.5 HP / 24,000 BTU (~2,500 W)3.5 HP / 36,000 BTU (~3,500 W)

Energy Efficiency RatingStandard — 3-star (non-inverter)High Efficiency — 4-starInverter — 5-star (most efficient)

Hours Used Per Day

Days Used Per Month

Electricity Rate (S$/kWh)SP Group tariff: S$0.28/kWh

## 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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