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Posted by THE MOUSE MOTEL on Wed Sep 25th, 2019 at 2:00 pm

I get a lot of questions this time of year from our clients on the subject of covering an Air Conditioner. 


Cover or Not to Cover?? By wrapping an air conditioner with an old grill cover or a tarp, you're stopping the wind from blowing though the unit and adding an insulating blanket around the AC protecting it from the elements. At the same time, mice and other rodents are on the hunt for a warm place to hunker down for the winter and somehow or another, covered Air Conditioners seem to turn into Mouse Motel's. Yet when mice take up residency in your AC, they eventually begin to dine on the plastic coating on all the wiring inside the unit causing the electrical wires to short out and cause serious damage.


Mice damage to wiring











There is no real guaranteed way to keep mice out of any AC, but we find far fewer AC units with wire damage when the AC is left uncovered. If you wish to do something to help protect your AC from winter's snow, cutting a piece of plywood or other material to place over the top is ok. This can be a good compromise to a "full wrap" of the unit. The wood roof will keep leaves, fall debris, and snow from getting inside but allow air flow through the unit to keep it dry and cool in attempt to keep rodents out.


One more thing... If you do decide to wrap or place anything over the top of your AC this fall, make sure to remember to take it off before running the AC next spring! Turning on a wrapped or covered AC can cause major damage to the machine.


Have a question or need help? Polar Express Heating and Air Gurus are experts in HVAC service and replacement serving all of Waukesha County. Our number one priority is providing the highest level of service! Polar Express Heating and Air Conditioning 262-367-3266 or

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