Have you recently had a new furnace installed and are now having a weird smell? You’re not alone, because many other homeowners also experience this at first. Let’s review what’s causing this smell, and when you can look forward to it to subside, as well as three other furnace smells you shouldn’t ignore.

Why Your New Furnace Smells

There are two explanations why a new furnace might stink.

Protective Coating

Your furnace has a special coating on specific parts to keep them from rusting. This may include the heat exchanger, which safely exhausts gases including carbon monoxide naturally produced during the heating process.

When your furnace runs for the first couple of times, the coating may give off a burning smell. This is typical and the smell should dissipate the more your furnace runs.

To be on the safe side, you’ll want to connect with a heating and cooling company if the smell continues. A burning smell that remains can mean the motor has overheated or there’s an electrical problem, among other problems.

Dust

Dust builds inside your furnace when it’s off in the spring and summer. That dust will burn off when you switch on your furnace in the fall, creating a burning smell. This smell should go away within a few minutes.

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

3 Other Furnace Smells You Shouldn’t Dismiss

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 difficulties. Electrical wiring is protected in plastic to avoid shocks, and this smell is an indication that heat is melting this protective coating. To avoid a fire, shut off your furnace immediately and have it examined out by an HVAC technician.
  2. Gas or rotten eggs. Gas companies include sulfur in natural gas to alert you when there’s a leakage. If your furnace smells like gas or rotten eggs, shut it off right away, evacuate your home and contact 911. Exposure to natural gas can make you ill, plus it’s very flammable and explosive.
  3. Musty. If your furnace smells musty, you might have mold and mildew developing in your ductwork. We suggest having your ductwork inspected and cleaned if needed.

Now that you are aware which furnace smells are normal and which ones aren’t, you’re well-equipped to take care of your new furnace. If you’re worried about a weird odor, our Desert Husky HVAC/R Services HVAC technicians can help. Contact us at 520-416-5415 to schedule your appointment now. We supply quality, affordable furnace repair in Tucson and Phoenix and surrounding communities.