When you turned on your furnace for the first chilly weather this fall, you may have been aware of a burning smell pervading the home. As most homeowners know, this furnace smell is nothing more than the dust that's collected on the combustion chamber during the time the furnace is unused. The dust quickly burns up when the furnace is turned on. It's nothing to worry about, as long as it does not persist past a couple of hours.A very strong burning smell, or a persistent burning smell is, however, something you should be concerned about. Common causes of persistent burning odors are dirty air filters blocking the heating system and perhaps causing overheating, or blower malfunction. You can change the filter and see if the burning smell goes away. But if it's a blower malfunction, you will need professional help.
Other Common Furnace Smells
Rotten Egg Smell
This smell usually signals a gas leak. Turn the furnace off and open windows. Then clear out, taking all the living creatures in the home with you, and call your gas company. They will have to fix the leak before the HVAC tech can work on the furnace.
Electrical/Metallic Smells
This might be a burning odor, indicating components inside the furnace are getting too hot. If you smell this type of odor and the furnace shuts down randomly, it may be a protective mechanism. Call your HVAC company right away.You may also smell unfamiliar odors associated with the burning caused by aging or worn parts made of metal or rubber. Again, you'll need an HVAC tech to identify the source of the smells and replace the parts before they malfunction and cause damage.
Musty or Moldy Smell
This is a problem more commonly associated with the air conditioner. However, if you have damp conditions inside your home or your HVAC system, and mold spores have taken hold inside the parts or the ductwork or vents, have your HVAC tech check it out.
For more on identifying a furnace smell, contact Air Assurance. We serve Broken Arrow and the surrounding area.
Our goal is to help educate our customers in the Tulsa and Broken Arrow, Oklahoma area about energy and home comfort issues (specific to HVAC systems). For more information about furnaces and other HVAC topics, call us at 918-217-8273. Credit/Copyright Attribution: “piotr-marcinski/Shutterstock”