Derek Cole and William Skipper explain why AC units struggle in extreme heat. Most residential systems are designed for 95°F outdoor temps; beyond that, they can't cool your home more than 3-4°F below the outside temperature. Setting your thermostat to 68°F on a 105°F day won't work—aim for 78°F instead.
The Comfort Experts, we're talking, it's really hot outside, so why is my unit not cooling the house down as much as I would like?
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Hey, this is Derrick Cole along with William Skipper, and welcome to the show. Today we're talking about why it's so hot outside, my temperature in the house is not coming down, so Let's just say it's 100 degrees outside and I have my thermostat inside set to 68 and it's never getting to 68. Why is that?
Well, Derek, first of all, let's not say it's 100 degrees. It has been 100 degrees here for 2 weeks. And we have got this call multiple times in the last 2 weeks. My temperature is climbing in the afternoon. It won't reach set point. Well, one reason is the unit is not designed to handle that kind of extreme heat. They're designed to handle a temperature 95 degrees and below. So once you go above 95, you're out of its capacity range. So you will start to see in the afternoon that temperature start climbing. Most of the time, it's within 3 to 4 degrees of your set point. You got it on 72, you might see it late in the afternoon get up to 76, 75, 77. That's normal with this heat. Now as the temperatures start to fall outside, you will start to see that unit bring it back down and get within your range.
Right, so for those people who go to work, set the thermostat back to, you know, 78, they come home and they want it at 75. Is that a good idea in this kind of—
No, not this time of year when you know it's going to be 100 degrees. Leave that temperature where you want it to be at because it will not be able to overcome that heat late in the afternoon when you come home and bring it down to where you want it to. It'll be late at night before it ever gets there. That unit's designed to change that temperature 20 degrees, and if it's 100 degrees outside, 80 degrees is a good temperature for that time of that kind of heat.
Right. So check that. If you need us though, call us or go online, 1houraircarolinas.com.
Today's episode was brought to you by the comfort experts. See us for all your heating and air conditioning needs. For more information, visit 1houraircarolinas.com. That's 1houraircarolinas.com.
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