Once the weather starts to cool, many homeowners start infusing their homes with hints of cinnamon and spice. But, what happens when you discover that your heater doesn’t smell so nice?
Finding out why your home’s heater has a strong or foul odor is essential for feeling safe and cozy in your home this season.
Get a Quick Answer: Why Does My Heater Smell When I First Turn It On?
Fortunately, most furnace smells are from simple, short-term problems such as dust burn-off or dirty filters. But, some odors indicate dangerous problems such as electrical faults or gas leaks. Check out these common causes of heater smells to start narrowing down the problem.
•Dirt air filter
•Dust burning off, usually during the start-up
•Gas leak (watch for rotten egg smells)
•Cracked heat exchanger
•Mold or mildew in the ducts
•Chemical or oil leaks
•Electrical issues
•Pet hair or other debris inside the furnace
•Plastic or rubber components burning
9 Most Common Heater Smells Explained
Now that you can start thinking about what the smell could be, it’s also a great time to consider why it may be happening.
1. Burning Dust Odor
This is usually normal after lengthy periods of inactivity.
How to Fix: Run the furnace for an hour to let the dust burn off. Schedule a preseason cleaning to remove residual debris.
2. Dirty or Clogged Air Filter
You’ll notice a musty or dusty smell. Clogged filters can also restrict air flow.
How to Fix: Replace the air filters every one to three months.
3. Electrical Issues
Wiring or motors that spark problems can create a burning or metallic odor.
How to Fix: Shut off the system immediately, and call our Jacksonville HVAC techs.
4. Gas Leak or a Rotten Egg Smell
Mercaptan is an additive that makes gas leaks detectable.
How to Fix: Exit your home immediately to avoid potential explosions and gas exposures. Call the gas company, and our technicians can fix the heater once we receive the all-clear signal from the utility crew.
5. Cracked Heat Exchanger
This problem may cause a chemical smell, and there is a possibility of leaking carbon monoxide.
How to Fix: We offer emergency HVAC inspections and exchanger replacements to quickly address this dangerous problem.
Mold or Mildew in the Duct System
Moisture can occasionally build up in the ductwork, especially in the high humidity we’re used to in Florida.
How to Fix: Clean the ducts and check the drainage. Replacing filters can halt any lingering odors.
7. Chemical or Oil Smells
Furnace cleaner, oil leaks and other contaminants can cause odors to emanate through your home.
How to Fix: Shut the system down, and call our technician to look for seals or lines that might be causing a leak.
8. Burning Plastic or Rubber
Usually, this indicates overheated parts, melted wires or foreign objects burning on the coils.
How to Fix: Turn off the furnace immediately to prevent fires and request professional repair.
9. Pet Hair or Debris in the Furnace
We see this sometimes in homes with pets, and the odor smells like singed fur.
How to Fix: Give the furnace components a deep cleaning, and vacuum the vents to remove leftover hair.
Use These Strategies to Prevent Furnace Smells
A little TLC helps to keep furnaces odor-free, and these ideas are great for ensuring your home only smells like its signature scent.
Perform Pre-Season Maintenance
Schedule an annual tune-up before the cold season arrives. Periodically, make sure the ducts are professionally cleaned.
Try These DIY Prevention Tips
•Replace filters regularly, usually every one to three months
•Keep furnace area clear of debris, storage materials or chemicals
•Run the furnace briefly in the fall before the frigid temps start
Give Our Pros a Call When You Spot These Warning Signs
We never mind putting your mind at ease with a quick inspection, and you’ll definitely want to give us a call when these problems happen.
•Odors that stick around for more than a day or two
•Smells that indicate hazardous situations, such as burning plastic, smoke or rotten eggs
•Furnace fails to start after the odor or keeps tripping the breaker
Speed Up Your Mission With these Furnace Smell FAQs
Identifying bad odor causes is faster when one of our technicians performs an inspection, but it also helps to have a few answers to your burning questions.
Is it normal for my furnace to smell like burning dust?
Yes, but this usually only happens during the initial season start-up. Or, you might notice this occurs if the heater is off for a period of time.
How long should the burning smell last when I turn on the heat?
Dust burn-off is usually short, and it should stop or grow fainter after an hour or two.
Can a furnace smell indicate a carbon monoxide concern?
Carbon monoxide is odorless, but you might smell a burning or musty scent that indicates incomplete combustion is occurring during a leak.
Why does my heater smell musty?
Mold and mildew could cause this odor, along with clogged filters and potential leaks.
Remember These Key Takeaways
As you prep for our HVAC technician’s visit, we encourage you to keep these key points in mind.
•The majority of furnace smells are temporary, such as dust burning off
•Some smells could signal dangers, such as gas, electrical and plastic odors
•Preventing bad smells is as simple as performing seasonal maintenance and using clear filters
Restore Your Home’s Signature Scent by Calling Our Jacksonville HVAC Team
Minor heater smells are fairly common. But, you never want to ignore unusual odors, especially when they linger. If your heater’s odor is strange or long-lasting, then call One Hour for a professional inspection to uncover the cause today.
We provide heater maintenance, repairs and installations to our neighbors in Jacksonville, FL and the surrounding areas. We also deliver on our promise that we’ll be on time or you won’t pay a dime. Call us today to make your favorite fall and winter scents the only thing you smell when you walk into your home.