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

Why Your New Furnace Smells

There are two factors why a new furnace might reek.

Protective Finish

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

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

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

Dust

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

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

3 Other Furnace Smells You Shouldn’t Ignore

While it’s less common for a new system to need furnace repair, it happens. Here are three other scents 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 coated in plastic to protect against shocks, and this smell is an indication that heat is melting this precautionary coating. To prevent a fire, turn off your furnace immediately and have it inspected out by an HVAC technician.
  2. Gas or rotten eggs. Gas companies include sulfur in natural gas to signal you when there’s a leakage. If your furnace smells like gas or rotten eggs, shut it off as soon as possible, get out of your home and call 911. Exposure to natural gas can make you ill, plus it’s extremely 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 inspected and cleaned if needed.

Now that you know which furnace smells are normal and which ones aren’t, you’re ready to take care of your new furnace. If you’re worried about a weird odor, our Mechanical Air Systems Co HVAC technicians can help. Give us a call at 641-243-4654 to schedule your appointment now. We offer quality, affordable furnace repair in Mason City and surrounding areas.