How to Find Air Conditioner Size
Basically all manufacturers encode the size or tonnage of their systems into the model number. Tonnage is a measure of BTU’s in 12,000 BTU increments. For example a 1 ton system would have 12,000 BTU’s. A 2.5 ton system would have 30,000 BTU’s. These are reflected in the model numbers near the middle and often followed by a letter.
Not Too Big, Not Too Small
When an air conditioner cools a room too quickly, it will cycle on and off more frequently. This can put much more wear and tear on a system compared to one that is appropriately sized, which means you’ll spend more on maintenance and repairs. And whenever the unit is running, you’re likely consuming more energy than necessary to keep the room cool.
A unit that is too small, on the other hand, will run around-the-clock, driving up your energy bill. It may never reach your desired temperature, and can even fail to keep spaces comfortable during the hottest times of the year.