What size unit AC do I need
How many BTUs do I need

Question

What size unit AC do I need
How many BTUs do I need

Accepted Answer

The size of the air conditioning unit needed will depend on the size of the room you wish to cool. To determine which size unit will best cool your room, we will need to determine the square footage of your room.

How to find room square footage

Measure the length and width of the room
Multiply those numbers togethers, to get the room square footage.

What does BTU mean?

BTU stands for British Thermal Unit, a unit of measurement for heat energy. It's used to measure the amount of heat needed to raise or lower the temperature of one pound of water by one degree Fahrenheit. BTUs are commonly used in the HVAC industry to determine the efficiency of appliances, such as air conditioners and furnaces.

BTU Chart

NOTE: These are general guidelines to determine sizing for an AC unit and do not account for vaulted ceilings and a properly insulated room. If you need more information please contact a AC professional.

BTUs	Sq. Ft.	Cool Area
5,000	Up to 150	10' x 15'
6,000	Up to 250	10' x 25'
7,000	Up to 300	15' x 20'
8,000	Up to 350	14' x 25'
9.000	Up to 400	16' x 25'
10,000	Up to 450	18' x 25'
12,000	Up to 550	22' x 25'
14.000	Up to 700	25' x 28'
15,100	Up to 850	25' x 34'
18,500	Up to 1,050	30' x 35'
22,000	Up to 1,300	30' x 34
25,000	Up to 1,600	40' x 40'
28,500	Up to 1,900	38' x 50'

Room Air Conditioner - Size Guide

Issue

Applies to

Solution

How to find room square footage

What does BTU mean?

BTU Chart

BTUs

Sq. Ft.

Cool Area

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