Don’t Let Bugs Nest in Your HVAC System

Row of HVAC Units

Years of performing HVAC maintenance has taught us most people want the same thing from their home: a space that’s cool in the summer and warm in the winter.

Unfortunately, that’s exactly what rodents and snakes are looking for as well when they creep into your ductwork. Same thing goes for roaches, forever on the hunt for cool, dark places.

And as you might expect, having insects and other pests nesting in your HVAC system can cause health and safety issues, not to mention expensive damage.

With that in mind, we’ve put together this list of things you can do to keep your ductwork and HVAC components vermin-free.

1. Look for gaps and cracks

Checking for leaks and blockage in HVAC duct work

One of the simplest ways for pests to creep into your HVAC system is to look for holes in the system. Cracks or damaged vents are an easy way in for rodents and other nuisances during the winter.

Inspecting your ducts and outdoor vents for damage can help you identify – and then repair – these cracks and gaps, stopping pests before they even have an opportunity to worm their way in. If there’s damage inside your walls or other hard-to-get-to spots, you might need to consult pest management company or HVAC maintenance professional.

2. Put up some mesh screens

The most thorough inspection might not catch every gap in your system, especially smaller spaces in vents and other openings that let smaller insects creep through.

An easy solution in this case: put up some mesh screens, which have holes small enough to keep bugs out without cutting off airflow within your system.

3. Clean your outdoor units

Your heating and cooling system likely has some sort of outdoor unit to help with external ventilation. This unit is vital for proper HVAC system, but also useful for pests trying to make their way indoors, which is why it’s important to keep this outdoor unit clean.

Make sure grass and shrubs aren’t growing too close to the unit to prevent insects from entering, and make sure snow doesn’t pile up around the vents in the winter (as this can allow rodents to burrow inside your home).

4. Switch out your filters

Changing dirty HVAC filter

We often suggest changing your heating and cooling system’s filters as part of regular HVAC maintenance, but it’s also a good way of keeping your system free from insects and other critters.

When your filter becomes clogged, it’s easier for moisture to build up inside your ducts, and pests will seek out moist places. By changing your filters regularly, you’ll make sure your ducts are dry and unwelcoming to rodents and insects.

5. Call an exterminator

Pst control exterminator

You might not be able to spot all the ways pests can make their way into your HVAC system, which is why a routine visit from a pest management company can help. They can keep insects at bay and let you know of any problem areas – mold, gaps in your vents – that you might have missed.

6. Keep on top of HVAC maintenance

Finally, one of the most important – and easiest – things you can do for your system is to schedule regular HVAC maintenance and cleaning. When dust, dirt and other debris collect in your system, it can mask damage to your ductwork and give bugs and rodents a place to hide.

Are you worried about the presence of pests in your HVAC system? It might be time to have it looked at. The HVAC maintenance professionals at All Seasons Comfort Control can help. Whether you’ve noticed damage to your ductwork or just realized it’s been a while since anyone looked at your system, we can examine your furnace, ducts and other components to make sure you’re getting the heating and cooling you need.