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Johnny On the Spot Blog

3 Furnace Odors and What They Mean

A well-maintained heating system should operate without any odor. If there’s an unusual smell coming from the vents in your Las Vegas, Nevada, home, try to determine the cause as quickly as possible. If you notice the scent is stronger when the heater cycles on, call Johnny On The Spot right away. You should never ignore furnace odors.

Rotten Eggs

The smell of sulfur or rotten eggs is something you should never ignore. Natural gas is invisible and odorless. However, gas companies add chemicals that will give it this unpleasant odor so you can detect a leak.

If you notice a smell like rotten eggs in your home, ventilate the space and get out of the house. Contact your gas company for further instructions, but do not stay inside if there is a potential gas leak.


A musty odor is unpleasant and can eventually affect your health. Quite often, this smell develops because of a dirty filter or filthy ductwork. Begin by changing your air filter regularly, especially if you have pets. If this doesn’t solve the problem, we’ll determine if air duct cleaning is necessary.

Burning Odors

When you first turn on your furnace during the heating season, you might notice a smell like something burning. This is merely dust burning off in the unused system. The odor will go away after your system runs for a few cycles. If you’re dealing with a persistent burning smell, it’s time to reach out to a professional for help. Our service specialists can pinpoint the cause and take corrective action.

If there’s a metallic scent, it might be an issue of damaged wires. Odors that seem electrical in nature could also indicate a problem with the motor. In these cases, you should turn off the furnace and contact us so that our service specialists can inspect the issue.

Take action as soon as you notice unusual furnace odors. Contact the experts at Johnny On The Spot at (725) 977-9461. We offer prompt heating repairs that protect your home and system and keep you and your family safe.

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