---
title: Why Do I Have a Musty Smell Coming From My Furnace?
description: If you're experiencing a musty smell from your furnace, don't hesitate to call the experts at Geiler. We can  identify the odor source and  fix it.
---

[The Geiler Company Blog ](https://www.geiler.com/blog)

# [Why Do I Have a Musty Smell Coming From My Furnace?](https://www.geiler.com/blog/why-do-i-have-a-musty-smell-coming-from-my-furnace)

 Written by [Reid Geiler](https://www.geiler.com/blog/author/reid-geiler) | Mar 21, 2022 1:49:00 PM

If there's a musty smell from your furnace, it's essential to find out where the odor is coming from and take actionable steps to fix it. This article will discuss the possible causes of a musty smell coming from your furnace and explore solutions to get rid of it. Let's get started!

 

## **Clogged Or Dirty Air Filters **

 

A dirty filter is among the most frequent causes of a musty smell in your furnace. If your filter clogs with dirt and dust, it can cause the air to stagnate and create an unpleasant odor. Cleaning or replacing your filter can provide a quick fix if this is the cause.

## **Blower Motor Issues**

 

Another potential cause for smelly treated air could be that the blower motor in your furnace has worn out. In this case, you'll need to replace it with a new one.

## **Moisture In the Ductwork**

 

Moisture trapped in your ductwork can also be the reason behind a musty smell coming from your furnace. One effective way to remedy this problem is by drying out and removing standing water in the ducts and [installing a dehumidifier](https://www.geiler.com/the-geiler-company-indoor-air-quality) to keep humidity levels low.

## **Pet Hair And Dander**

 

Pet hair and household dander can contribute to a musty smell coming from your furnace. A thorough [duct cleaning ](https://www.geiler.com/duct-cleaning)can help resolve this issue if it's the source of the problem.

## **Mold**

 

If nothing mentioned above is the source of the odor, you may have a[ mold problem](https://www.geiler.com/blog/4-ways-to-prevent-mold-in-your-home). In this circumstance, we recommend calling in a professional to inspect your furnace and ducts to confirm your suspicions.

 

**Call Geiler For Your HVAC Needs**

 

If you're experiencing a musty smell from your furnace, don't hesitate to call the experts at [Geiler](https://www.geiler.com/indoor-air-purification). We can help you identify the odor source and take steps to fix it. So give us a call today!

 

 

[View full post](https://www.geiler.com/blog/why-do-i-have-a-musty-smell-coming-from-my-furnace)

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