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Sizing an AC: You Don’t Want Too Big or Too Small

Choosing an air conditioning unit is like Goldilocks choosing a bed to sleep in. You want to choose one that is just right for your space. Gibson Heating & Cooling has been helping people with AC installation in Cherry Hill since 2009. Our honest and direct staff will ensure you install an air conditioning unit that is neither too big nor too small.

Why Is It Important to Have a Correctly Sized AC Unit?

An air conditioner that is too big for the space runs on short cycles. This causes swings in the temperature of your home rather than a consistent comfortable cool.

Small air conditioners need to run longer to cool down a too-large space. Despite the unit’s best efforts your space may never reach the cool temperature you desire.

Plus, an air conditioner is responsible for removing moisture. The short cycles of a large AC unit don’t allow enough time to remove the humidity. This leaves your home feeling cold and clammy.

AC units that are either too large or too small will be overworked. The excessive workload leads to problems requiring repair and a shortened lifespan for the unit.

What Size Air Conditioner Do You Need?

Start by considering the square footage to be cooled. A home office does not need a unit as large as an open-plan living space. A general rule of thumb is to install an air conditioner with 20 Btu for each square foot of living space.

  • Small rooms ranging from 100 to 300 square feet need an AC unit with a capacity of 5,000 to 6,500 Btu
  • Midsized rooms ranging from 250 to 400 square feet need an AC unit with a capacity of 7,000 to 8,500 Btu
  • Larger family rooms ranging from 350 to 650 square feet need an AC unit with a capacity of 8,800 to 12,500 Btu

Determining the square footage is simple. Measure the length of your space and the width of your space. Multiply the two measurements together to calculate the square footage of the room. Add together the square footage of any rooms that are connected via open doorways. Your AC unit will cool both spaces.

Also, take into account the location of the room. Shady rooms won’t need as much to keep them cool. You may be able to use a smaller AC unit in this space. On the other hand, a room that gets the sun all day will require an AC unit with more power to keep cool.

Lastly, take into account how the room will be used. You should consider a slightly larger unit for a kitchen where heat is regularly generated from cooking and the gathering of people.

Of course, one of our Gibson Heating & Cooling technicians would be happy to help you calculate your square footage and assess the needs for your space based on its usage.

Make the Wise Choice, choose the home of the lifetime repair guarantee! Call Gibson Heating & Cooling to schedule AC replacement.

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