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Serving the greater Orlando area

24 hr Emergency Service


Serving the greater Orlando area

24 hr Emergency Service


Thank you Shawn. I was very impressed and satisfied by your service and attention to details others did not provide. You Exceeded my expectations and would have no problem referring you to anyone needing your services.

- Ray R

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What’s Involved in Sizing a New Air Conditioner?

Many homeowners assume that the bigger their air conditioner is the better. This is not true, though. In fact, if your AC system is too large, it will experience short-cycling, which occurs when your AC shuts on and off rapidly, making the cooling process inefficient. On the other hand, too small of a unit will cause your system to continuously run as it will never be able to effectively cool your home. Having the right-sized unit installed is essential to effective and efficient cooling. But how do you know what the right size is?

Calculating Size

HVAC technicians look at a variety of factors when calculating the right size equipment for your air conditioner. They’ll look at the square footage of your home, of course, but getting the right size takes more than just that. They’ll consider the ceiling height, number of windows, thickness of your walls, insulation, material used for the construction of your home, lights and other heat generating devices in your home, and more. Another important factor they’ll look at is the environment in which you live.

How Are These Calculations Done?

The methods used for calculating the right AC size is fairly straightforward. However, these calculations have become more complicated as high energy-efficient systems have made their way onto the market. Professional HVAC technicians are trained to do these calculations day in and day out.

Remember, it is not your responsibility to determine what size your air conditioning system should be. That being said, you should always ask your HVAC technician how they are sizing your unit. A reputable HVAC contractor will mention the factors above and even demonstrate them for you. Sizing your air conditioner requires a detail-oriented approach and the knowledge that comes with professional training.

Contact Downtown Air today for air conditioning replacement in Orlando, FL.

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