How to Estimate Air Conditioner Size

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Estimating air conditioner size is all about taking accurate measurements of the room in question. Estimate air conditioner size with help from a foreman for Lighty Contractors in this free video clip.

Part of the Video Series: Air Conditioning
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Video Transcript

Hello, everyone. I'm Joshua Clement, and today I'm going to talk to you about how to estimate the air conditioner size that you need. Now there's a couple different things that we could be talking about here. One is the actual dimensions of the air conditioner itself. For this the best thing to do is go ahead and get a tape measure and measure the window. So it's not good to estimate this at all. You want to get a tape measure and measure the length and the height of your unit to make sure that it fits in to your window. Now if it's a little bit smaller than the window, they have these attachments that go on to the side of your air conditioners. This is a wind shield. And what it does it it allows you to adjust to the exact size of your window so that way you don't have any gaps leftover. Now if you're trying to figure out what size unit you need in BTUs, there's a simple formula. You'll take the square footage of the room, multiply it by 30, then add 2000 to it which would give you the BTUs needed for your specific size of room. You want to make sure you don't go too much bigger than the recommended BTUs because that won't allow the unit to pull all the humidity out of the room and it could cause some problems with your air conditioner because it's shutting off too fast. It's important to make sure you get the right dimensions for your window. Make sure that you aren't too big or too small. It's also important to make sure that you have the recommended amount of BTUs. Thank you all for watching and good luck with this project.


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