Mice getting into HVAC system

30587 Views 43 Replies 15 Participants Last post by Pete in PA, Feb 11, 2020

cyteen

Discussion Starter · Dec 18, 2015

I have a 2014 Chevy Cruz LS 1.8. With the hood up and looking at the firewall, there is a HVAC duct with a flap covering it a little to the passenger side from the middle and less than a foot from the top. This duct runs at least to the cabin air filter. A mouse entered here (pieces of filter were found under the flap) and made a nest on top of the filter where it then died! I went to the dealer that we purchased the car from and their service dept. tech. manager did not know what it was or it's function. When asked if the flap could be wired shut to keep mice out, he said he saw no problem in doing so. It seems like GM needs to come up with something to prevent this problem.

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mod

· #41 · Apr 21, 2017

Well,it was my turn this time...a large RAT in my 2012!
Comprehensive covered the cleanup an shampoo for the seats and carpets.
I slid a stainless plate with small holes in it in with the filter.
This will keep them from ripping out the filter and getting in.

Thanks for all who posted!

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Trtmntdude

· #42 · Apr 18, 2019 (Edited)

I know this is an old thread, but I didn't want to start a new one unnecessarily. I was cleaning under the cowling after the car had sat for a few years while I was out of Country, and I found this. I had also changed the cabin filter and saw what I now know was nesting material from a mouse/rat. They used the louvers to sharpen their teeth. Is changing the air inlet box very hard?

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Blasirl

· #43 · Apr 18, 2019

Trtmntdude said:
I know this is an old thread, but I didn't want to start a new one unnecessarily. I was cleaning under the cowling after the car had sat for a few years while I was out of Country, and I found this. I had also changed the cabin filter and saw what I now know was nesting material from a mouse/rat. They used the louvers to sharpen their teeth. Is changing the air inlet box very hard?

This will get you started

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Pete in PA

· #44 · Feb 11, 2020

Wish I'd have done a search years ago for this thread. I have 2 Cruzes and combined found probably 7 nests on my cabin filters. I never change a filter for just dirt, no time. Of course when you pull the filter all the mess goes down to the blower fan. I got good at pulling acorns out of it so it wasn't out of balance. Never thought to remove the plastic cowl covers and attack the problem from there.

I live in the woods, lots of acorns for the mice to eat, can't stop that. Just have a carport.

Going to Tractor Supply today to buy 1/4 in. mesh.

I think the default mode after the car is off for 10 minutes is the outside fresh air door shuts. I've got a small hole chewed through the door.

And yes I've got MORE cabin filters on order.

I wonder if this thread should be linked with this one. FIX: Excessive Moisture/Condensation/Frost on Windows
Doors get out of sync from debris, whether natural or mouse related. Those acorns can really stop the door.

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Mice getting into HVAC system

cyteen

mod

Trtmntdude

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Blasirl

Pete in PA

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