100 percent satisfaction guarantee badge

Satisfaction Guaranteed

Air Repair Pros service image

Ready 24/7 Emergency Service

a/c size
Air Repair Pros

How to Calculate What Size A/C You Need!

When it comes to choosing the right air conditioner for your home, size is everything. But how do you know what size A/C you need?

It all depends on a variety of factors, not just the square footage of your home. Here are some things to keep in mind when determining the best A/C size for your needs.

1. The number of rooms in your home: More rooms mean more space to cool, so you’ll need a larger A/C unit.

2. The layout of your home: An open floor plan will require a different size A/C than a home with smaller, separate rooms.

3. The climate you live in: Here in Frisco, Texas, we generally need a bigger size A/C than someone in a cooler climate.

4. The amount of sunlight your home gets: Homes that get more sunlight will require a larger A/C unit to compensate for the heat.

5. Your insulation: Properly insulated homes will retain cool air better, so you may be able to get away with a smaller A/C.

6. The number of people in your household: More people means more body heat, which will require a larger A/C unit to compensate. Believe it or not, your furry friends give off body heat, too. So if you have lots of pets, even that is a small factor!

7. Your lifestyle: If you entertain often or have lots of visitors, you’ll need a bigger A/C to keep everyone comfortable.

8. The age of your home: Older homes tend to have less insulation, which means you’ll need a bigger A/C unit to compensate.

9. Your windows: Windows that face the sun will let in more heat, so you’ll need a bigger A/C to counterbalance that.

10. The height of your ceilings: Higher ceilings mean more space to cool, so you’ll need a larger A/C unit.

Once you’ve considered all of these factors, to get a truly accurate estimate of the size A/C you need, you’ll need to consult with a professional technician who has access to an official sizing manual, called ACCA’s Manual J. This manual takes into account all of the different variables that can affect A/C size, so you can be sure you’re getting the perfect unit for your home.

Here at Air Repair Pros, we’re more than happy to ensure that your A/C fits your Frisco home and your lifestyle, in every way. Give us a call anytime at [csad_phone], and we’ll come out to help you now!

Share This Post:
Facebook
Twitter
LinkedIn
Pinterest
Recent posts
dallas sewer line repair
May 27, 2026
Expert Allen, TX sewer line repair tips to protect your home from costly plumbing issues and keep your HVAC running efficiently.
dallas slab leak repair
May 26, 2026
Expert Dallas slab leak repair services detect and fix hidden leaks under concrete slabs with minimal disruption to protect your home.
replacement AC
May 22, 2026

Is your AC showing signs of trouble? It could be time for a replacement AC installation. Professional HVAC technicians can […]

Scroll to Top