Have you recently had a new furnace set up and are now noticing a strange smell? You’re not alone, because plenty of other homeowners also have this happen at first. Let’s review what’s leading to this smell, and when you can anticipate it to go away, as well as three other furnace smells you shouldn’t neglect.

Why Your New Furnace Smells

There are two explanations why a new furnace might reek.

Protective Finish

Your furnace has a special application on certain parts to keep them from rusting. This may include the heat exchanger, which safely gets rid of 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 standard 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 persists. A burning smell that sticks around can mean the motor has overheated or there’s an electrical problem, among other problems.

Dust

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

One way you can lessen or prevent this smell is by having furnace maintenance done every single 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 period.

3 Other Furnace Smells You Shouldn’t Ignore

While it’s less common for a new system to need furnace repair, it can happen. Here are three other smells 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 problem. Electrical wiring is covered in plastic to avoid shocks, and this smell is a signal that heat is melting this protective coating. To prevent a fire, switch 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 leak. If your furnace smells like gas or rotten eggs, turn it off right away, leave 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 developing in your ductwork. We recommend having your ductwork examined and cleaned if needed.

Now that you understand which furnace smells are normal and which ones aren’t, you’re prepared to take care of your new furnace. If you have concerns about a weird odor, our Fletcher Plumbing, Heating & AC HVAC technicians can help. Give us a call at 302-653-0503 to schedule your appointment now. We provide quality, affordable furnace repair in Smyrna and surrounding areas.