Home Air Conditioner Size Calculator

Estimate the cooling capacity, power use, and running cost for a home air conditioner.

Room area
(m²)

Total room or zone area.

Sun exposure
level

Sunny rooms need stronger AC.

People in room
(count)

Each person adds heat load.

Daily use
(hours)

Average daily AC runtime.

Electricity price
($/kWh)

Your local electricity rate.

Main result
view

Choose the main output.

Main result

Recommended AC size

Approximate cooling class

Practical estimate only. Real AC size depends on insulation, windows, climate, room layout, appliances, and local installation rules.