US room AC calculator

Plan AC for the part of your home you need.

Size one room, compare several rooms or start with a broad whole-home screen. See likely simultaneous use, running cost and solar contribution before installation.

Start with one room

WHAT ARE YOU TRYING TO COOL?

Choose the scale of your plan.

01One room

Use the established room sizing calculator.

02Several rooms

Compare room classes and simultaneous demand.

03Whole home

Get a broad screen, then add priority rooms.

FOR ONE ROOM

What you will get

See a suggested AC size in BTU/h and tons, plus daily energy use and running cost.

Inputs use feet, square feet, °F and cents per kWh.

Start calculator