What size air conditioner do I need? When selecting an air conditioner for your home, remember that not all air conditioners are created equally. The best way to determine the size of air conditioner for your home is to conduct a load calculation. This calculation estimates heat gain and heat loss in your home and helps you select the proper air conditioner.
When determining what size air conditioner will best cool your home, these factors need to be taken into account:
This Air Conditioner is Too Big
Purchasing an oversized air conditioner isn't a smart decision. A system that's too big will not remove enough moisture from the inside because the air cycle is too short. While the system does cool quickly, the air cycle does not run long enough to remove humidity from the inside of the home, and that leaves residents uncomfortable. The bottom line is that an oversized system consumes more energy.
This Air Conditioner is Too Small
Too small of air conditioner isn't a smart buy, either. The system won't cool sufficiently. Since the unit will always be trying to catch up cooling the house, the unit's energy costs will be high.
This Air Conditioner is Just Right
To find the proper size air conditioner, calculate the square footage of the area you need to cool. It's a simple calculation. Break the area into shapes to calculate square footage. For a square or rectangular room, multiply the length by the width. For a triangle section, multiply the length of the triangle by the width and divide by two.
Cooling ability is measured in British thermal units, or BTUs. Use this guide to determine BTU capacity.
Adjust For Accuracy
Once the square footage is calculated and you've determined the number of BTUs will most efficiently cool your home, you should make adjustments based on these factors:
While you can calculate the square footage on your own, a trained air conditioning professional may be the better choice to perform a load calculation on your home.
Air conditioner maintenance tips can help keep your air conditioner working for years to come.
How do portable air conditioners work? A portable air conditioner may be a wise investment, especially since the unit does not require permanent installation to a structure.
Learning how to unclog an air conditioner drain can save thousands of dollars worth of water damage to your home. The good news is that simple regular maintenance can keep the AC drain running freely.