Have you recently had a new furnace put in and are now noticing an unusual smell? You’re not alone, because a lot of other homeowners also have this happen at first. Let’s review what’s leading to this smell, and when you can expect it to subside, as well as three other furnace smells you shouldn’t ignore.

Why Your New Furnace Smells

There are two reasons why a new furnace might stink.

Protective Finishing

Your furnace has a special coating on some parts to keep them from rusting. This may include the heat exchanger, which safely gets rid of gases including carbon monoxide naturally created during the heating process.

When your furnace starts for the first couple of times, the coating may emit a burning smell. This is typical and the smell should go away the more your furnace operates.

To be on the safe side, you’ll want to call a heating and cooling company if the smell continues. A burning smell that lingers can mean the motor is too hot or there’s an electrical problem, among other concerns.

Dust

Dust builds inside your furnace when it’s not running in the summer. That dust will burn off when you turn on your furnace in the fall, producing a burning smell. This smell should subside within a few minutes.

One way you can lessen or prevent this smell is by having furnace maintenance done every year. This is necessary to keep your valuable manufacturer’s warranty valid, plus it keeps your furnace clean and ensures it will run perfectly during the upcoming heating season.

3 Other Furnace Smells You Shouldn’t Ignore

While it’s less common for a new system to necessitate furnace repair, it can happen. Here are three other odors you should keep an eye out for and what they might mean.

  1. Burning plastic or rubber. If your furnace smells like burning plastic, you might have an electrical issue. Electrical wiring is covered in plastic to prevent shocks, and this smell is an indication that heat is melting this protective coating. To prevent a fire, shut off your furnace as soon as possible and have it examined out by an HVAC technician.
  2. Gas or rotten eggs. Gas companies add sulfur to natural gas to alert you when there’s a leakage. If your furnace smells like gas or rotten eggs, turn it off immediately, evacuate your home and call 911. Exposure to natural gas can make you sick, plus it’s highly flammable and explosive.
  3. Musty. If your furnace smells musty, you might have mold and mildew flourishing in your ductwork. We advise having your ductwork checked and cleaned if required.

Now that you are aware which furnace smells are normal and which ones aren’t, you’re prepared to take care of your new heating system. If you have concerns about an odd odor, our B & G HVAC HVAC technicians can help. Give us a call at 641-316-3360 to schedule your appointment right now. We supply quality, affordable furnace repair in Marshalltown and surrounding areas.