3 Factors Involved in Sizing a New Air Conditioner

How large an air conditioning system should you have for your home? The right answer isn’t, “As large as will fit and that you can afford.” An AC that is too large for the house it is supposed to cool down will encounter as much trouble as one that is undersized. The undersized system will struggle to reach the right temperature and run wastefully, while an oversized system will constantly turn on and off before completing its cooling cycle (short-cycling), draining energy and quickly wearing down.

The process of finding the right size air conditioner for a home is called sizing. Although you can attempt to size an AC on your own, you shouldn’t: the amount of factors involved in determining how much heat a home traps and how much cooling is necessary to overcome it is detailed and intricate, and you should leave this job to HVAC professionals.

For your new air conditioning installation in Beaverton, OR, make sure you have the team at Clean Air Act helping you. We will make sure you have the best installation possible.

3 important factors in AC sizing

There are many factors in sizing, but here are three of the key ones.

  1. Insulation: The insulation in a home prevents outside heat from moving inside. The better insulated a house is, especially the attic (which serves as a massive heat sink that can climb to 120°F during the summer), the less an AC will need to work to cool down a house. Older homes with less insulation often need larger ACs.
  2. Windows: Radiant heat finds a way into your house through the sunlight coming through windows. When assessing windows for the purpose of sizing an air conditioner, installers take into account not only the number of windows, but also their shading and the directions they face. East- and west-facing windows will permit in large amounts of heat, while north and south windows will experience much less.
  3. Appliances and lights: Basically, anything in your home that creates heat. (We won’t lump people in with appliances, but the number of bodies in a house will enter the calculation later.) Installers evaluate how much heat on average comes from your light fixtures, refrigerator, laundry machine, electronic devices, etc. and balance that against the amount of cooling power necessary from an air conditioner.

Once the installers have finished this process, which is known as a heat load calculation, they will have a strong idea of how large an air conditioner you need to keep you comfortable without causing trouble with short-cycling and energy drain.

It’s easy to get started: you only have to call Clean Air Act and talk to our specialists in air conditioning in Beaverton, OR. We strive to the highest levels of customer services and will dedicate ourselves to providing you quality comfort.

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