As an Heating as well as Air Conditioning professional, I often find that nasty pests are the concern with heating, ventilation, and A/C equipment that has some disrepair.
I’ve seen rodents all the way through electrical wires and completely disfigured HVAC ducts.
Beyond repair jobs, I’ve seen a lot of bees and hornets nests inside of outdoor A/C units in back yards. I’ve seen ants make a nest inside of air conditioning systems and I have seen a family of mice sleeping behind a furnace several times over. Still, nothing prepared myself and others for what occurred in the middle of last week. I was stressed to check on an A/C noise. The client sincerely claimed that she could hear a squeaking sound coming from behind the A/C unit, but I didn’t know what it would be. Sometimes that can be a sign of belts that are wearing too thin or that potentially need to be oiled or affixed. When I took the A/C unit apart that day, I was flabbergasted to see a big mouse infestation taking over. I must have viewed a hundred mice running from the area. They scattered everywhere, in all areas, including back into the HVAC duct. I couldn’t understand that the client didn’t hear any other noises throughout the house during this mess. After all, the mice had access to most of the HVAC ducts in the attic and the walls. I’ve carefully located the cover back on the A/C unit and told the client that she first needed to call an exterminator. Once the mice are gone, the A/C noise may even disappear.
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