How To Measure Room for Correct Air Conditioner Size

There are a wide range of options available in single- and multiple-room air conditioning appliances, with a wide range of features and capabilities.

Deciding on the right air conditioner to cool any area in your home begins with determining the area's volume to make certain you choose a unit that is designed with a capacity that efficiently meets the room's cooling demands.

The procedure for determining a room's volume requires a few basic measurements and can be easily adapted to any size or number of rooms.

How to Measure Room for Correct Air Conditioner Size

Measure room's ceiling height and record it as dimension

Measure the room's ceiling height and record it as dimension, A,. For a room with a sloped or peaked ceiling, measure the height at the highest point.

Measure length of room

Measure the length of the room, from wall to wall, and label this as dimension, B,. For a square room, either direction can be measured as the length.

Measure width of room

Measure the width of the room, wall to wall, and label this as dimension, C,.

Calculate the room's volume.

Multiply dimension, A, times the dimension, B, to define the room's area, then multiply the area number times dimension, H, to define the room's volume in cubic feet.

The volume can be matched to the air conditioner's rating to ascertain the appropriate appliance for the space.

Calculate the room's volume.

Multiply dimension, A, times the dimension, B, to define the room's area, then multiply the area number times dimension, H, to define the room's volume in cubic feet.

The volume can be matched to the air conditioner's rating to ascertain the appropriate appliance for the space.