What’s That Smell Coming From My Heater?

There are many scents that remind us of autumn. For some, it’s the smell of a hearty stew simmering on the stove. For others it’s the sweet aroma of a hot pumpkin spice latte. But there’s another smell that is synonymous with the change of season and the cooler weather that comes with it – a burning smell when you first turn on the heat for the season. At Eagle Service Company, we know that a burning smell coming from your heater can be scary, but it doesn’t always mean something is wrong.

We’re here to put your mind at ease and explain why a heating system may emit a burning odor and what, if anything, you should do about it.

Why Is There a Burning Smell Coming from My Heater?

As your heating system sits dormant during the summer months, layers of dust settle within the equipment and on radiator fins and slants. When you to fire up your furnace or boiler, the dust burns off causing the heater to smell like something is burning.

Is a Burning Smell Common?

Generally speaking, this burning smell is completely normal when a heater is first turned on for the season. You should notice the odor start to dissipate in an hour or two, and certainly be gone by the next day. However, if the burning smell persists or appears to intensify, turn the system off and contact a licensed HVAC company right away.

How Can It Be Avoided?

While a burning smell is a normal part of starting your heating system for the season, there are some measures you can take to reduce it.

  • Have your heating system inspected and tuned-up before heating season. This annual service includes cleaning system interiors to remove much of the dust that typically burns off at first use.
  • Change the filter every 6 to 8 weeks or as recommended by the manufacturer. A clean filter captures dust particles so they don’t continue to recirculate into your living space, causing the odor to linger.

When Is a Burning Smell Not Normal?

If your heater emits a burning smell when first turned on and the odor doesn’t go away by the next day or gets worse, or if there is a smell when you use your heating system throughout the season, there may be a more serious problem lurking.

  • A clogged filter can cause the blower motor to overheat, resulting in an electrical burning smell. Check your filter and replace it if needed.
  • A burning plastic smell can be the result of worn-out components, such as a fan belt or capacitor. It can also be caused by melting wiring insulation due to an electrical fault in the system. Turn your system off and contact a trusted HVAC professional right away.

If you think something is wrong with your heating, listen to your instincts and call Eagle Service Company right away. Our experienced, licensed technicians are trained to service and repair all makes and models of heating equipment so you can worry less and enjoy all that autumn has to offer.