Air conditioner electricity cost per month

A 1.5 kW AC scheduled for eight hours daily at 55% average compressor load uses about 198 kWh in 30 days. Multiply that energy by your applicable electricity rate for the monthly cost.

Cooling schedule

One AC, three monthly scenarios.

Each scenario uses 1.5 kW electrical input. The tariff remains separate so energy and price assumptions never get confused.

4h/day · 35% load

Mild use

63 kWh/month

At $0.18/kWh$11.34

8h/day · 55% load

Typical use

198 kWh/month

At $0.18/kWh$35.64

12h/day · 75% load

Heavy use

405 kWh/month

At $0.18/kWh$72.90

Verified market references

The same 198 kWh costs different amounts.

These are current, source-backed reference rates from the data layer. They are editable starting points—not substitutes for the tariff on an individual bill.

USD · United StatesEnter local rate

Enter the per-kWh energy charge from your utility bill. For time-of-use service, run separate peak and off-peak scenarios.

No current default loaded →INR · India₹1,100.88

5.5600/kWh · Maharashtra · MSEDCL

Effective through 2027-03-31 · Source verified →AUD · AustraliaA$65.62

0.3314/kWh · New South Wales · Ausgrid

Effective through 2027-06-30 · Source verified →SGD · SingaporeSGD 68.86

0.3478/kWh · Singapore

Effective through 2026-09-30 · Source verified →AED · United Arab EmiratesEnter local rate

Use the marginal slab rate plus the current fuel surcharge shown by your electricity authority, expressed in AED per kWh. Account for VAT if it is not already included.

No current default loaded →BRL · BrazilR$156.30

0.7894/kWh · São Paulo · Enel SP

Effective through 2027-07-03 · Source verified →

Your cooling month

Use your AC, weather and tariff.

Change electrical input, scheduled hours, active days, compressor-load share, currency and rate.

Your reading

Planning range · based on your inputs

Estimated monthly cost$36.04

Likely planning range $29.55–$42.52

Per day$1.18

Per active hour$0.15

Per year$432.43

Energy / month200.2 kWh

FormulakW × runtime × tariff

Month52 weeks ÷ 12

Data qualitySelf-entered estimate

Monthly formula

Keep energy and price visible.

Monthly kWh = input kW × hours/day × days × average compressor load

Then multiply monthly kWh by the applicable unit rate. For time-of-use tariffs, calculate peak and off-peak portions separately.

Why the month changes

Cooling demand is not constant.

Weather and humidityHotter, wetter periods usually increase compressor activity.

Room and buildingSun exposure, leakage, insulation, size and occupancy change heat gain.

Set point and maintenanceLow temperatures, blocked airflow and equipment condition can increase runtime.