Tips to Protect Your HVAC from Pests

Tips to Protect Your HVAC from PestsAre home pests living rent-free in your house? Various vermin, creeping crawlers and others find creative ways to invade homes. Sometimes, in fact, your HVAC system actually provides accommodations that cause unwanted visitors to take up permanent residence. Certain system components may be particularly vulnerable to home pests and proper HVAC function may compromised by infestation, should it occur.

Here are some areas of your HVAC system to check out if you suspect home pests are an issue.

What’s going on inside ductwork?

The network of HVAC ducts inside your house passes through certain unconditioned zones frequented by pests, such as the attic, basement and crawl space. As ducts age, leaks and gaps in joints and ductwork material commonly develop. These openings permit pests to enter ducts, breed, and migrate throughout your living spaces. Professional inspection and pressure-testing pinpoints duct leaks. Your HVAC contractor can offer duct sealing options to keep out the pests.

Where’s the moisture coming from?

Eliminate chronic moisture or standing water and deprive pests of an essential ingredient for life and breeding. Excess condensation originating on window A/C units and other HVAC components can saturate building materials and draw insects. Also, the drip pan underneath the indoor air handler may retain water that feeds pests. While it’s normally wet while the A/C is running, standing water shouldn’t be visible in the pan. If it is, call for HVAC service.

How high is the humidity?

Insects prefer a humid environment. A functional HVAC system should keep household humidity below the EPA-recommended limit of 60%. If the air conditioner runs cycles less than 10 minutes long—known as “short cycling”—indoor humidity may remain elevated, particularly in humid summer conditions. Low A/C refrigerant charge caused by a leak also reduces humidity extraction at the evaporator coil; likewise, a coil coated with dust or dirt. These issues require professional troubleshooting and repair.

Since 1922, Paitson Bros. has served Terre Haute and the Wabash Valley. Call us for qualified service to protect your HVAC system and your house from home pests.

Our goal is to help educate our customers in Terre Haute, Indiana about energy and home comfort issues (specific to HVAC systems). For more information about other HVAC topics, download our free Home Comfort Guide or call us at 812-645-6859. 

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    By Jeff Paitson
  • About Jeff

    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.

    Jeff’s belief is that the business belongs to Jesus Christ; therefore 10 percent of the company’s profits go toward the Maryland Community Church.

    Jeff is a Terre Haute Chamber of Commerce member and in his spare time, he enjoys photography.
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  • About Ethan


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

    An Eagle Scout, Ethan spent four years as a non-profit executive with the Boy Scouts of America before joining Paitson Bros. as a comfort advisor and later General Manager. In that role, Ethan has brought a renewed enthusiasm for customer care, integrity, value, and service to Paitson Bros. Heating & Air Conditioning.

    Ethan enjoys singing and was a member of the Purdue Varsity Glee Club. He also enjoys playing and coaching soccer, spending time with his family and two young boys, and volunteering his time and resources with his church, Terre Haute First Baptist Church, which he has attended from a very young age.
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