What to do When Your Furnace Smells

What to do When Your Furnace Smells

What to do When Your Furnace Smells

With homeownership comes the good, the bad, and the ugly. One of the ugly things includes smells in the home, which could originate from your furnace. When you’ve determined that the odor you’re sensing is from your heater, now you get to do some investigative work.

Colorado Heating & Air Limited is well versed in the various causes of a smelly heater and is your expert in furnace repair in Thornton, CO. If the issue you’re experiencing is urgent, we offer 24-hour furnace repair to get your home back to normal quickly. When you need an HVAC contractor in Thornton, contact us!

Ready to learn more about your smelly furnace? Read on!

What to do When Your Furnace Smells

Burning or Musty Odor

As scary as this might sound, a burning smell isn’t always a bad thing. If you’ve checked that your unit isn’t truly in flames, you’ve likely got little to worry about. Make sure that the fire detector near your furnace room is in good working order for good measure. Now, sometimes this burning smell is accompanied by a strong dusty odor. When this is the case, take a look at your filters, which may be on the dirty side. Replace them and see if that helps.

Burning Electrical or Metal Odor

Now, this is where you should have some concerns. When this is the case, and especially when you detect smoke, turn off the unit and contact Colorado Heating & Air immediately. Your unit might be overheating and not ventilating as it should, which could cause serious issues.

Rotten Eggs

Natural gas smells like rotten eggs, and that makes it easy to detect a natural gas leak. Get out of your home immediately, and find the gas shut-off. After you’ve turned it off, call us right away. Any time you smell rotten eggs, gasoline, or oil, this is cause for alarm and should be treated with urgency.


As dreadful as this sounds, small animals might have made their way into your HVAC system and died. Do your best to pinpoint the source, and see if you can get it out on your own. If not, give us a call. If you can’t get rid of the smell after a while, you should consider having your ducts cleaned and deodorized.

Your furnace replacement in Thornton, CO expert is Colorado Heating & Air Limited. We’ve proudly served the area since 2013, and are dedicated to the best customer service and the highest level of work. For 24-hour furnace repair, or to get an estimate on your upcoming project, contact us today!