Know How You Can Keep Pests and Your HVAC Unit Apart

Pests and HVAC is a frequent combination in and around a home. From the pest’s point of view, your cooling and heating system has much to offer. It provides an entry point into the home’s structure and then a network of ductwork to spread throughout the house and spawn baby pests. Temperatures are often pest-friendly, and food sources are within reach.

Here’s how pests and HVAC components come together in your home.

  • Rodents. Typically the most common HVAC occupant, mice and rats are expert at finding ways into ductwork and cementing that connection between pests and HVAC. As new residents, they deposit fecal droppings throughout the system, reproduce profusely, and disperse a variety of pathogens that rodents carry into your household airflow.
  • Roaches. Dark passageways with comfortable temperatures year-round make ducts a desirable roach residence. Roach infestations in ductwork spread bacteria. Plus, these insects enjoy easy walk-in access to kitchens, bathrooms, and other rooms through HVAC air vents.
  • Ants. Common with outdoor HVAC components, specifically the central AC condenser unit. Ant colonies can grow to extreme size inside the outdoor unit and inflict permanent damage on wiring and electronic components like the expensive AC compressor.
  • Bees and wasps. They’re always looking for a safe place to start a new hive. Bee-size entry points into ductwork are common. Once the hive is established, they’re not going anywhere until they’re removed by professionals.
  • Snakes. Imagine snakes slithering through the dark ductwork inside your house while you’re sleeping. It happens. Enough said.

Keeping the Pests Out

  • Place screens over vents that extend from HVAC ductwork, as well as any foundation vents in the structure.
  • Have ducts inspected for leaks by a qualified HVAC contractor. Professional duct sealing — including larger openings like disconnected segments and disintegrating duct material — not only improves system efficiency and lowers operating costs, it eliminates leaks and keeps out pests.
  • Cut back any overgrowth of bushes and other vegetation around the outdoor AC unit. If the presence of bees is noted in or around the unit, contact an exterminator.

Paitson Bros. has 100 years of experience keeping pests and HVAC components apart. If you suspect creepy crawlers, contact us for more information.

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