(602) 326-5714

How to Tell if Your Air Conditioner is Working Properly

How to Tell if Your Air Conditioner is Working Properly

Posted by on Feb 17, 2015 in Blog

At Aspen Air we get asked this question a lot by home owners who are looking for a simple way to see just how their air conditioner is running. Most people only call a technician out when the thermostat is set at 80, but it’s 85 or more in the house. Here’s a simple general rule of thumb to tell if your air conditioner is running properly before its 115 degrees outside. It’s always a good idea to have a knowledgeable technician inspect your air conditioner. You will need some kind of accurate thermometer to test the efficiency of your air conditioner system. The air coming out of the vents isreferred to as the supply air. The air entering the system through the filter is known as the return air.

An air conditioner is designed to cool the return air coming into the HVAC system approximately 20 degrees. For example, you take a measurement of the air entering the filter (Photo A).

Photo A

Photo A

That temperature reads 80 degrees. You then take a temperature from a vent that has the best/strongest air flow in your home (Photo B).

Hand and device by AC vent

Photo B

That temperature should be 18-22 degrees cooler than the air entering the filter. Knowing that the temperature should be 18-22 degrees cooler coming out of your vent than coming in we now are looking for a temperature of 58 to 62 degrees if your unit is running efficiently. If you do not have a difference of at least 16 degrees your system will not keep up during the hot phoenix summers. As always, any ac repair questions you might have in the phoenix area feel free to call us.