There are several reasons why pests enter homes and commercial buildings. If you are not maintaining your HVAC system properly, they could find their way into it. This is especially a problem for those who live in rural areas or near wetlands.
The pests can be anything from small animals, bugs or both which could mean big problems for your HVAC system.
They have been known to cause:
Here are a few steps you should be taking to protect your HVAC system from pests:
Seal the ducts well
If there are any gaps, cracks, or disconnects in the duct system they will be used by pests as their point of access. Some of these invaders include: Insects, mice, rats, squirrels or even raccoons.
Once they are in your ducts they will cause damage to them by travelling throughout them; all while spreading their dander and excrement. Then, as the air circulates, all this filth is pushed throughout the home where you and your family will breathe it in.
You could always treat the problem with pesticides, but this can lead to other health problems. Not to mention the pests will die in the vents. Leaving you with pest disposal which can be costly. It is a far better idea to keep the pests from entering the home to begin with by, sealing your ducts the right way the first time.
Make sure to pay special attention to the ducts under the home, especially if airflow is bad. This is often the first entry point for pests and they may already be wreaking havoc down there.
Install flue and vent covers
Some of the most important parts of your HVAC system are the flue pipes used to expel the dangerous byproducts of combustion from the furnace. If an animal was to get in there and die it could block the pipe which would trap carbon monoxide gas in your home. This is incredibly dangerous to everyone who lives there.
There are other vents and intakes that can be compromised with less danger but almost as much trouble. Be sure to have proper vent covers on all exterior flues, exhaust vents and intakes. These will keep the bugs and animals from interfering with your HVAC system.
Protecting your air conditioning condenser
Your exterior air conditioning condenser is especially vulnerable to pests. It can be damaged by them scratching at it, chewing it or even urinating on it, All of which can hurt your system if they are in there when you turn it on.
Your best bet is to keep pests from ever getting in there as well as needing to keep the area around the condenser clear of any, and all debris year round. Get rid of any vegetation within at least two feet of the condenser; and make sure there is no excrement around it as this will draw more vermin.
If you have had pest problems already, consider washing the outside of the condenser with mild soap and water. Next, use a pest repellant to keep them away from the area. These are safer than pesticides as they are generally natural and harmless.
These tips should help you pest proof your HVAC system but if you find yourself in need of expert help just call your local HVAC technician, they will know what to do to get everything back in working order.