Does Humidity Affect My Air Conditioner?

May 7, 2021
Lennox ac unit

High humidity makes your home feel warmer than it otherwise would. Ideally, your home will have a humidity level below 60% in the summer. When your home has high humidity, your AC system may struggle to remove moisture from the air. There are several ways high humidity affects your AC system.

Oversized AC System

If your AC system is too large, it won’t be able to control the temperature or humidity level of your home. It will turn on and off rapidly, which means there isn’t sufficient operating time to remove humidity. The only way to fix this problem is to get an air conditioner that is properly sized for your home.

ACR Air Conditioning & Heating Inc. will make sure you have the right-sized AC system when we install one. We’ve been helping Lake Charles and surrounding area residents with their cooling needs since 1999.

Single Speed

Many air conditioners operate at just one speed. These can have a hard time controlling the humidity level in your home. They run at top speed and then shut down once the desired temperature has been reached. Like an oversized system, that may not be enough time to control humidity.

Incorrect Fan Setting

If you have the fan on your thermostat set to “ON,” it will run regardless of if your air conditioner is operating or not. This affects humidity level as moisture is blown off the evaporator coils before it can drain away. Leave your fan setting in the “AUTO” position instead.


The best way to help your air conditioner control humidity is to have a dehumidifier installed in your ductwork. The dehumidifier will remove moisture from the air, which helps your air conditioner get your home to the right humidity level.

At ACR Air Conditioning & Heating, we repair, replace, and maintain heaters and air conditioners. We’re also experts at duct cleaning, indoor air quality, and ductless mini-splits. Please call today to find out how we can help your family.

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