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Why Are There Bad Smells Coming From My Furnace Vents?

The air that comes out of your furnace should never smell bad to the point where it’s unpleasant. If the air is smelling a little funky or off and you start to notice it, it most likely means something within your furnace is malfunctioning. While it could just need a small repair, it could also be a sign of a bigger issue.

Below are some smells you shouldn’t be ignoring and could signify you need a gas or oil furnace repair.

Rotten Eggs

The smell of rotten eggs is rather displeasing and it’s most certainly not something you want to be smelling in your own home. This could mean that there’s a gas leakage coming from your gas furnace, which puts you and your family in a dangerous situation. If you ever smell rotten eggs, you should get out of the house and call for help immediately because a leak can be very dangerous.

Burning Smell

A burning smell is also unpleasant and poses a safety risk. If you smell burning, it could be due to some part in your furnace getting too hot, such as a motor or other electrical piece. This smell can be described as burning plastic, melting rubber, or hot metal. There may be a part of the furnace that’s burning, which has the possibility of turning into a fire. If you smell this odor, turn off your unit immediately and contact a trusted HVAC company.

Musty Odor

While your AC is usually a more common culprit for a musty smell, it’s also possible for it to come from your furnace. It’s caused by a buildup of moisture that then gets into the air ducts and causes mold, therefore accounting for the musty smell. If there’s mold in the air ducts, you will breathe it in, which can have detrimental effects on your respiratory system and overall health.

Chemical Smell

This is another smell that could be potentially very dangerous and should not be ignored. If it’s very clearly a chemical smell, such as one that closely resembles formaldehyde, it most likely means there’s a crack in the heat exchanger. The heat exchanger takes heat out of the combustion chamber- but if it’s broken, there’s a risk of fire and it could possibly dispel carbon monoxide in your home.

For those reasons, you’re smelling something that resembles chemicals, you should call an HVAC company right away.

Contact Us for Furnace Repairs, Replacements, or Installations

Your furnace should never be emitting any unpleasant or strange odors. If it is, we recommend you call us right away to avoid a potentially dangerous situation. Our experienced technicians will diagnose and fix the issue with ease, suggesting the most efficient solution possible. For furnace repair in Camarillo and surrounding areas, call Aladdin Air Conditioning & Heating today.

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Office Location

1090 Lawrence Dr. #105
Newbury Park, CA 91320

License #739136


Ventura County


San Fernando Valley