Have you recently had a new furnace set up and are now experiencing a strange smell? You’re not alone, because many other homeowners also experience this at first. Let’s review what’s leading to this smell, and when you can expect it to go away, as well as three other furnace smells you shouldn’t disregard.

Why Your New Furnace Smells

There are two reasons why a new furnace might reek.

Protective Coating

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 made during the heating process.

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

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

Dust

Dust accumulates inside your furnace when it’s not running in the spring and summer. That dust will burn off when you switch on your furnace in the fall, making a burning smell. This smell should disappear within a few minutes.

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

3 Other Furnace Smells You Shouldn’t Disregard

While it’s less common for a new system to need furnace repair, it happens. Here are three other smells you should watch for and what they might mean.

  1. Burning plastic or rubber. If your furnace smells like burning plastic, you might have an electrical problem. Electrical wiring is covered in plastic to protect against shocks, and this smell is an indication that heat is melting this protective coating. To prevent a fire, turn off your furnace as soon as possible and have it inspected 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, get out of your home and contact 911. Exposure to natural gas can make you ill, plus it’s highly flammable and explosive.
  3. Musty. If your furnace smells musty, you might have mold and mildew growing in your ductwork. We recommend having your ductwork inspected and cleaned if required.

Now that you know which furnace smells are normal and which ones aren’t, you’re prepared to take care of your new heater. If you’re worried about an odd odor, our Bell Mechanical Services HVAC technicians can help you. Call us at 888-863-0560 to schedule your appointment right now. We supply quality, affordable furnace repair in McKinney and Frisco and surrounding areas.