What’s That Smell When I Turn On My Furnace for the First Time?

By: Brian Schutt  |  September 8, 2017

homesenseAs the temperature dips for the first time this fall, homeowners across Central Indiana oftentimes smell something funny.


#1 Don’t Worry

It’s very normal that your furnace will have a funny smell the first time you turn it on. It can sometimes smell like burning, sometimes a little musty. Don’t get worried, it’s a very normal thing and happens in most homes.

#2 What is it?

Over the course of the spring and summer, dust has accumulated in and around your heat exchangers, vents and registers. As the furnace gets fired for the first time, that dust gets burned off creating that funky smell.

#3 How long should it last?

Not long. If the smell doesn’t go away within a few days of your first usage, it is definitely something to get looked at. Your furnace should feel like you have a fire burning, not smell like it.

If you have concerns about how your furnace is burning, or that something foreign is getting into your breathing air, don’t hesitate to call us at 317.670.0171. In matters of combustion, the precautionary principle is certain applicable.


Brian Schutt


is the co-owner of Homesense Heating | Cooling. Born and raised in Indianapolis, he loves the city and its people, and is committed to bringing a servants mindset into the heating and cooling industry. One of the ways he does that is to translate the technical language of HVAC into the manageable and understandable for homeowners.

Have a question? Tweet him and you'll get an answer promptly.

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