Have you recently had a new furnace installed and are now noticing an unusual 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 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 stink.
Your furnace has a special finish on certain parts to keep them from rusting. This may include the heat exchanger, which safely exhausts gases like 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 normal and the smell should go away the more your furnace runs.
To be on the safe side, you’ll want to contact a heating and cooling company if the smell persists. A burning smell that sticks around can mean the motor is too hot or there’s an electrical problem, among other issues.
Dust accumulates inside your furnace when it’s idle in warm weather. That dust will burn off when you turn on your furnace in the fall, creating 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 year. This is necessary to keep your valuable manufacturer’s warranty valid, plus it keeps your furnace clean and ensures it will run properly during the upcoming heating season.
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 odors you should look out for and what they might mean.
- Burning plastic or rubber. If your furnace smells like burning plastic, you might have an electrical issue. Electrical wiring is covered in plastic to prevent shocks, and this smell is an indication that heat is melting this protective coating. To prevent a fire, shut off your furnace immediately and have it inspected out by an HVAC technician.
- Gas or rotten eggs. Gas companies include sulfur in natural gas to warn you when there’s a problem. If your furnace smells like gas or rotten eggs, shut it off immediately, evacuate your home and call 911. Exposure to natural gas can make you sick, plus it’s highly flammable and explosive.
- Musty. If your furnace smells musty, you might have mold and mildew flourishing in your ductwork. We advise having your ductwork checked 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 strange odor, our Miller Climate Control LLC HVAC technicians can help. Give us a call at 512-937-2001 to schedule your appointment today. We provide quality, affordable furnace repair in Georgetown and surrounding communities.