The Cause Behind Your HVAC Fan Problems

HVAC fan problemsIf you’ve got HVAC fan problems, you probably already know it. Optimum airflow is among the most important factors in maintaining consistent indoor comfort. However, no matter how well other system components perform, if the fan’s not functioning properly, cooled or heated air doesn’t get where it’s supposed to go and the whole house feels the effects. HVAC fan problems are hard to ignore but often not difficult for a qualified service tech to diagnose and resolve.

Here are some of the most common scenarios:

Drive belt slipping or broken.

In a belt-driven blower, the fan belt may stretch over time and begin slipping on its pulley. You may hear squealing noises as the drive belt slips and fan rpm’s decline. Alternatively, if a worn, aging belt simply snaps, all air circulation in the house ceases abruptly. Situated inside the indoor air handler, fan belt replacement and adjustment is a job best left to an experienced HVAC technician.

Motor burnout.

Like all mechanical components, the electric motor driving the HVAC fan has a finite service life. It may fail gradually, slowly reducing airflow and impairing indoor temperature control. Or, it may simply give up the ghost one day without any warning whatsoever. Once the fan motor stops, so does all cooling and heating in the house. You’ll want to make a call for professional service, ASAP, in order to restore indoor comfort.

Dust build-up.

Dust and other particulates in circulating air can coat the surfaces of the blower fan, reducing efficiency. Even though you can probably still hear the fan running at full speed, as airflow drops, temperatures throughout the entire house are eventually affected. Cleaning the blower and other fan components—an important service included in  professional annual preventive maintenance— usually restores full air-moving function. You can help maintain fan components and maximize airflow by changing the system air filter regularly.

Contact the professionals at Paitson Bros. for a prompt response to diagnose and repair HVAC fan problems. In Terre Haute and the Wabash Valley, we’ve been your go-to source for dependable heating and cooling service since 1922.

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    Jeff Paitson Jeff Paitson is a third generation business owner who continues to run the business with the same values that have been passed down from previous generations since 1922.

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    Ethan Ethan Rayburn is a lifelong resident of Terre Haute and a 2005 graduate of Purdue University.

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