Having the right size ac unit in your home is important for ensuring optimal comfort for your home. If your home doesn’t feel comfortable to you despite your ac unit working, it could be the wrong size for your house. Here are some signs that you may have the wrong size unit.
Lack of Comfort
Here in the Southeast, we not only rely on our ac units to cool our homes, we also rely on them to remove the humidity. In order to remove humidity, water vapor needs to condense on the evaporator coil and drip down into a pan below. An oversized air conditioner won’t run long enough to allow that process to happen.
On the flip side, if your ac unit is too small won’t be powerful enough to completely cool your home or remove the excess humidity from your home. You also may experience inconsistent temperatures from room to room. Your ac unit should run in 15-20 minute cycles, provide a consistent temperature throughout your home, and effectively remove the humidity from your home.
One of the main factors that contribute to the wear and tear of your unit is when it turns on and shuts off. A system that is too large for your home may get your home to your desired temperature more quickly, however, this will cause you to have shorter, more frequent cycles.
A system that is too small for your home can seem to run continuously. These longer cycles lead to many problems with your ac unit since it is running more than it is designed to do. Whether your system is running all day or short cycling it will be under a lot of strain, potentially leading to more repair costs and a shorter lifespan for your unit.
An improperly sized unit can cost you more money than a unit that is the right size for your home. A unit that is too large will cost you more upfront. Not only will you be purchasing a unit that is larger than what you need, you will also have to pay more in labor to install it.
You may save money on the install with an undersized unit, but you’ll make it up with higher utility costs. If your utility bill seems high and your home isn’t being cooled efficiently, your unit is probably too small for your home.
While there are many factors that contribute to what size unit you need from your home, such as the overall climate where you live, there is a simple formula that you can use to get a rough estimate of what size unit your house may need. Multiply the square footage of your home by 25. Divide that number by 12,000 and then subtract by 0.5. If you live in an environment where you have high temps for most of the year, you’ll need to add 0.5 instead of subtracting.
This formula should only be used to give yourself a rough idea of what size system your home requires. To find out for sure what size unit you need, contact us.