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Serving the Texas Hill Country for over 40 years


Why a Load Calculation Is Critical for a Successful AC Installation

When you go shopping for a pair of shoes, you check the box for the right size, correct? It’s the same when you install a whole home air conditioning system: if you don’t have the right-sized system, you won’t get the cooling you need. You may have heard that you only need to know the square footage of your home to determine what size AC you need, but this simply isn’t true. What you need is a load calculation, and the experts at D’Spain Sales & Service, Inc., can help you with this.

What Is a Load Calculation?

Sometimes known as a Manual J, a load calculation takes into account a number of factors that can affect the temperature in your home. When done correctly, this calculation allows you to determine exactly how much cooling your home needs to be comfortable, which is critical for sizing. The factors that go into a load calculation include items such as:

  • The orientation of your home
  • Daytime heat gain
  • Number of stories
  • Types and number of doors and windows
  • Level of insulation throughout the home
  • Floor plan
  • Number of rooms and occupants
  • Square footage

Every single one of these factors affects the temperature in your home, making them an important part of the overall calculation.

Tonnage Is Based on the Calculation

Once your technician knows how much cooling you need, it will be easy to determine what size, aka, tonnage, your whole home AC system needs to be. When this calculation isn’t done, or isn’t done properly, you can end up with a cooling system that is too small or too large. A system that is too small won’t be able to cool your home as needed, and a system that is too big will cool it so fast that dehumidification won’t take place, leaving your indoors feeling cool and clammy.

If you are getting ready to install a new air conditioning system, call the experts at D’Spain Sales & Service, Inc. We’ll help you correctly size and install your new system so that you have both the comfort and efficiency you need and want in Bandera, TX.

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