There’s no doubt about it; furnaces are one of the most common heating systems found in homes and buildings across America. They’re essential to keeping any space warm when it gets cold outside. If you want your furnace running smoothly for years, then making sure it’s well-maintained is a top priority.

You may notice an odd smell in the air after turning on your furnace for the season, but this is usually not a cause for concern. It’s typically caused by dust buildup that’s being burnt off. However, if these smells persist for more than two to three days or others start to come into play, you could be dealing with a more complex furnace issue. Let’s find out what your furnace smell is signaling.

1. New Furnace

Any new appliance has a “new smell” period that occurs upon initial use and includes your furnace. When you have a new furnace installed, don’t be surprised if it smells unpleasant.

This is because of the new coating of protective oils inside that needs to be burned off. New furnace smells typically last for a day or two, so if you’re experiencing prolonged strange smells, it’s time to get professional help.

2. Oil Leak

Have you noticed an oily smell coming from your existing or new furnace? It could be because the filter needs to be replaced.

However, if it lasts for more than a day, there’s a good chance you’re dealing with some oil leak, which should be inspected ASAP. 

3. Mold Growth

The fall is an excellent time to startup your furnace because it means cozy days ahead. But if you notice an unpleasant, musty smell coming from inside the house, then chances are good for mold growth in your ductwork or the air conditioning coil.

After having your air conditioning coil checked and cleared, then it’s time to start looking into having your ducts cleaned. 

4. Burnt Electrical Units

Burnt plastic smells coming from your furnace is an immediate red flag; this is often the cause of scorched electrical wires and components within your furnace or a malfunctioning furnace fan.

It’s crucial to immediately shut off your furnace and call for an expert inspection to professionally detect the exact source of your furnace issue. 

5. Carbon Monoxide

While carbon monoxide has no distinct odor, it is often mixed with other gases and produces a rotten egg or sewage-like smell when there is a leak. These odors can also indicate that your furnace has a cracked heater pipe exchanger, so it’s best to call an expert to get the situation sorted. 

Other Signs Your Furnace Has a Carbon Monoxide Leak

Like gas leaks, carbon monoxide leaks are a danger to you and your family. Carbon monoxide is an odorless, colorless gas that deprives vital organs of oxygen.

Knowing all the signs of a furnace carbon monoxide leak can help your furnace get the attention needed to address this issue immediately, including:

  • Black, brown, or yellow soot stains around your leaking furnaces 
  • Yellow furnace flame instead of blue
  • The pilot light blew out
  • Weakness, shortness of breath

What should you do in this scenario? Shut your furnace off and call an expert technician to test and repair your furnace for safe use.

Get Your Furnace Checked by Preferred Home Services

Furnaces are complex heating systems that require specialized services to keep them functional, safe, and effective. Our licensed and insured technicians at Preferred Home Services are committed to delivering quality furnace repairs each and every time.

When you choose us to take care of your home’s services, you can always expect same-day services and background-checked technicians; also, with our Preferred Partner Plan, you can enjoy even more benefits, including priority scheduling, regular maintenance, ongoing safety inspections, and more to keep your home safe and comfortable all year long.

We’re committed to your complete comfort. Call (843) 405-3601 or contact us online to learn more about our furnace services in the Charleston Area.