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What is the 20 degrees rule with air conditioning?

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What is the “20 Degrees” rule with air conditioning

You may or may not have heard someone mention “the 20 degrees rule” when it comes to your air conditioning unit. But what does that mean? Simply put, it means you should never set your thermostat for a temperature more than 20 degrees cooler than the outside air.

Most air conditioning systems can only handle a 20 degree difference between the outside and inside air temperatures. If it’s 80 degrees outside and your thermostat is set to 70, your unit should have no problem. But if it’s over 90 degrees at that same setting, your unit will have to run almost non-stop to get your inside air temperature to 70 and it still might not make it. Constantly running air conditioner will cause your utility costs to skyrocket there’s no doubt about that.

We recommend setting your thermostat to 78 in the summer. Yes, that’s higher than you might expect, and if your health or other circumstances make that difficult, then you shouldn’t set it that high.

But keep this in mind, temperatures close to 100 are in the forecast this week, and the lower the setting on your air conditioner, the more it will run, and the more it will cost you. If possible, set your thermostat at the higher setting and help it out by closing drapes, running ceiling fans (counterclockwise) and other fans to circulate air, and not running heat producing appliances during the heat of the day.

Nx Gen Heating and Cooling is here to answer any questions about your thermostat or our maintenance packages to keep your system running as efficiently as possible.

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After a service or installation visit, we will debrief you again about what we did and any issues we may have run into and how we fixed them. After service, we always follow up with you on your satisfaction with our overall service.