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Unwanted Guests: Don’t Let Your HVAC System Be a Gateway for Vermin

Your HVAC is an important part of your home, but it’s often easy to take for granted. If you don’t show your system a bit of TLC, however, it may well become a gateway for pests. As a trusted HVAC contractor will tell you, these are the preventive measures you need to take.

Unwanted Guests: Don�t Let Your HVAC System Be a Gateway for Vermin

Seal the Ducts

Your HVAC system has a series of pipes and ducts connected to it. Unfortunately, gaps or disconnections in these systems allow vermin to enter your duct system—and your home. When this happens, mice and other pests can gnaw away at the ductwork, potentially causing even greater damage. What’s more, pest droppings and dander can seriously compromise the air quality inside your home. Hence, be sure to have your ductwork inspected to ensure that it has no gaps or damage.

Install Flue and Vent Covers

Flue pipes funnel the combustion fumes safely away from your home. However, it’s also another entry point for pests into your abode. What’s worse, if a pest were to die inside the flue, it can block the channel and hinder the proper expulsion of harmful fumes. The good news is that such a scenario can be avoided by simple purchasing flue covers.

Use Vent Screens

In the same vein, your air vents also grant smaller insects such as flies entry into your home. As you might know, such insects carry germs and can spread nasty diseases to your family. Keep them away by installing a screen on your HVAC vents. For best results, be sure to get aluminum mesh screens which have small weaves that prevent tiny vermin from infesting your home. Also, be sure that the screen you get fits snugly over the vent—any gap will be another entryway for insects.

Regularly Inspect Your HVAC System

Like any appliance, your HVAC system experiences wear and tear—and vermin are only happy to take advantage of this. At least once a year, have the air conditioning unit in your home inspected to see if there are any potential entryways for pests.

Properly maintaining your HVAC system will ensure that not only will it operate efficiently, but will also deter pests from entering your home. Keep these tips in mind if you suspect that your heating and cooling system harbors vermin.


Pest-Proof Your HVAC Components,

How to Keep Pests Out of Your HVAC,

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