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

Why Your New Furnace Smells

There are two explanations why a new furnace might stink.

Protective Coating

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

When your furnace runs for the first couple of times, the coating may emit a burning smell. This is typical and the smell should disperse the more your furnace heats.

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

Dust

Dust collects inside your furnace when it’s not running in the summer. That dust will burn off when you switch on your furnace in the fall, creating 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 single year. This is needed to keep your valuable manufacturer’s warranty applicable, plus it keeps your furnace clean and ensures it will run properly during the upcoming heating period.

3 Other Furnace Smells You Shouldn’t Disregard

While it’s less common for a new system to require furnace repair, it happens. Here are three other scents you should look 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 covered in plastic to avoid shocks, and this smell is an indication that heat is melting this preventive coating. To prevent a fire, shut off your furnace immediately and have it checked out by an HVAC technician.
  2. Gas or rotten eggs. Gas companies include sulfur in natural gas to signal you when there’s a problem. If your furnace smells like gas or rotten eggs, shut it off right away, leave your home and call 911. Exposure to natural gas can make you unwell, 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 heater. If you’re worried about a strange odor, our Northern Comfort Inc HVAC technicians can help you. Give us a call at 507-387-6596 to schedule your appointment now. We provide quality, affordable furnace repair in Mankato area and surrounding areas.