Why is there a burning smell coming from my furnace?

When the furnace isn’t actively heating, dust and dirt particles can settle inside the furnace and on internal components. When you turn on the furnace the dust burns off, causing a light burning smell that should dissipate relatively quickly.

Why would my furnace smell like burning plastic?

Sometimes a burning plastic smell can be the sign of an electrical failure. Malfunctions in the heater can cause the plastic wire casings to fail and meltdown. … An electrical burning smell could also be something more serious like an overheated furnace motor or a cracked heat exchanger.

Is it normal for a furnace to smell?

A burning dust smell may emanate from the furnace once you start the furnace at the beginning of the winter season. This smell is completely normal and should go away within several days. … If the problem persists after switching the air filter, it indicates a serious problem with the furnace.

Why does my house smell like burning wires?

An electrical burning odor could indicate an overheated blower motor in your furnace or heater. Under normal operating conditions the furnace should shut itself off if it begins to overheat.

What should I do if I smell burning in my house?

If you smell odors that suggest something in your furnace is overheating or burning:

  1. Shut the furnace off immediately and unplug it.
  2. Call your HVAC source for inspection and repair.
  3. Monitor the furnace for a few hours to make sure there are no fires or further problems.
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What does a burning smell mean?

Phantosmia is a condition that causes you to smell things that aren’t actually there. It’s also called olfactory hallucination. The smells may always be present, or may come and go. They may be temporary or last for a long time. Smelling smoky or burning smells — including burnt toast — is a common type of phantosmia.