Thursday, December 17, 2015

How to Calculate Size for a Central Air Conditioning Unit

If you found out that you need a new central air conditioner and you have never been through the air conditioning installation process before or if it’s been awhile, then you may be wondering how we determine what size air conditioner unit to install. Accurate calculations and measurements are incredibly important. If the air conditioner unit is the wrong size, either too big or too small, it can drive up the cost of your cooling bills. We specialize in air conditioning installation in Plymouth, so we wanted to discuss these calculations and measurements in more detail.

When we are on an air conditioning installation job, the first thing we consider is the square footage of your home and how much of that square footage needs to be cooled.

With the square footage information, we then calculate the correct cooling capacity, which is measured in British Thermal Units (BTUs) per hour. The larger the area that needs to be cooled means the more BTUs per hour that are needed.

Next we calculate and make adjustments for other circumstances. For example, how much shade your home gets, how many people live in your home, what kind of insulation your home has, what kind of shape it is in and the climate you live in. For Minnesota, our climate is in Zone 5, which includes all of the other northern states in the United States.

Once we have these questions answered, we can factor those into the overall calculations for the air conditioning installation project. We believe going the extra mile by taking the measurements and making the calculations is the right thing to do for our customers. Newer central air conditioners are far more energy efficient than older models, so you can see savings on your electric bill after you have one installed.

An air conditioner that is too big will turn on and run too quickly. Then it will rapidly cool your home and shut off. It will repeat this cycle, which defeats the purpose of having a more energy efficient model installed.

An air conditioner that is too small will run constantly to try and catch up to the temperature that you want for the home. This will run up the cost of your cooling bills. Air conditioners are meant to work slowly over time and not to just quickly cool your home.


If you would like more information on air conditioning installation, call Air Jeff's Heating & Air Conditioning at 952-270-0668, or you can contact us to set up your Free Estimate.