Is there actually less wear and tear on your AC unit if you leave the fan running all the time, due to less stopping and starting?

Asked by Lynn Priest
Kelso, TN

My husband and I argue about the unit wearing out.


Lee Hall

Answered by Lee Hall

Allen, TX

Sustainable Structures of Texas

August 21, 2010

The experts say yes. Frequent stopping and starting is called short-cycling and adds quite a strain to your system.

More importantly, you want your "air conditioning" to run and condition the air (lower the humidity) so that you will feel cooler at a warmer temperature. Thus you get the full efficency from your unit and save money.

For more information:

Read Hamid Kashani's Q&A "I have heard it is most efficient to run the fan constantly for a central air-conditioning unit. Is that correct?"

Also check out Harvey Sach's "9 Ways to Make Your Home More Energy Efficient" for more savvy tips.

Tagged In: heating cooling, summer energy

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