Add to GuideAsk a Question

Awful Smell Coming From Heater Ducting

Category Odors
This is a guide about getting rid of an awful smell coming from heater ducting. If you believe that the odor is being caused by a deceased rodent in the ducting, it is important to remove the source if possible and then try some of these ideas for combating any lingering odor.


Share on ThriftyFunThis guide contains the following solutions. Have something to add? Please share your solution!

January 14, 20140 found this helpful

Once mice have been in residence in a house they can die in the walls and heating system, making them difficult to find. This guide is about rodent odor in walls and vents.

Read More... Pin it! Was this helpful? Yes


Ask a QuestionHere are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.

By 1 found this helpful
October 8, 2011

I think a rodent has died in my heating vents! The smell is horrible, and it is starting to get much worse. I first noticed it toward the kitchen, and then it started getting much worse, and now the smell is also spreading. It is awful. I am pretty sure it is in the heating vents. I've pretty much narrowed it down. I have tried to use the shop vac, with a long tube on it, and I was praying that by chance I would suck it up but no luck! I do not have the resources to go under the house, rip out the insulation, take all the vents off, and clean it out.


What can I do to get rid of the smell? The worst part of this is my poor daughter's rooms are right in the path of the stink. I use candles, sprays, and Plug Ins, but it is just not cutting it. It has been about 2 weeks, so I thought it would be getting better by now, not worse. I am guessing it is much bigger than a mouse, but I don't know. Please help.

By Audrey H.


October 10, 20111 found this helpful
Best Answer

I am a retired cleaning lady and have run across this more than once. I have seen rats die in walls, ducts, and in my own home, the attic. The smell is really awful, but it is temporary. It takes about two weeks to go away on its own.

In my own case I had a gap next to a vent fixed on my roof and apparently trapped some rats in my attic. I was able to tape off my range fan with plastic and duct tape and the smell went away. When I took the plastic down (two weeks later) it was gone.


I assume there is a dried out rat corpse in my attic somewhere. One of my customers had a rat die in her wall with no way to get to it. It smelled wretched, but two weeks later there was no smell. The are businesses that will come in and clean your heating duct work (vacuum it all out).

I am not sure how much that would cost. I would give it a bit more time, and then call the duct cleaners. You could try plastic over the heating vents for a few more days. Good luck.

Reply Was this helpful? 1
October 11, 20110 found this helpful
Best Answer

This happened to me also, but my son took a "Wire Coat Hanger", bent a small hook on it, took a flashlight to see which vent was closes to the rodent. He then took the wire coat hanger and fed it into the vent until it reached the rodent.


He then inserted the hook around or into its body and drug it to the vent he was working from. I hope this works for you,as it did for us. I didn't spend a cent on getting it out.

PS: We had to unscrew the screws that held the vent down.


Reply Was this helpful? Yes
April 2, 20174 found this helpful
Best Answer

I also had a dead mouse in the walls some where in between a bedroom and bathroom. Bought all this fresh airbags off Amazon. Waste of money. Have been dealing with this going on 18 days. So i read a article about peppermint oil. I am here to tell you this is some awsome stuff. Put on cotton balls droped in closets,vents,windows and even put some in the air humitifier. Awsome job the smell is gone. And my place smells fresh. I even made candle warmers. Mice and other rodents hate the smell of peppermint so bought peppermint plants planted in all my flower beds. Made sachets with rice and pepermint oil to put under house to keep them out. You can also hang these in uour closets,garages and attics. Hope this is useful for all. All kinds of ideals on Pintrest. Good luck.

Reply Was this helpful? 4
April 3, 20170 found this helpful
Best Answer

I had been told to put coffee grounds in the vents, but need to add to my answer that I used coffee beans so there was not a chance of dust like particles coming back up from the vent. It works!

Reply Was this helpful? Yes
Answer this Question...
Related Content
Home and Garden Cleaning OdorsDecember 13, 2017
Mother's Day Ideas!
Pest Control
Ask a Question
Share a Post
Better LivingBudget & FinanceBusiness and LegalComputersConsumer AdviceCraftsEducationEntertainmentFood and RecipesHealth & BeautyHolidays and PartiesHome and GardenMake Your OwnOrganizingParentingPetsPhotosTravel and RecreationWeddings
Desktop Page | View Mobile

Disclaimer | Privacy Policy | Contact Us

© 1997-2018 by Cumuli, Inc. All Rights Reserved.

Published by ThriftyFun.

Generated 2018/04/04 10:21:45 in 1 secs. ⛅️️ ⚡️
Loading Something Awesome!