Derek ColeGM, Simmons One Hour Heating & Air · AI HVAC Answers

Burning Smell? Dust on Heat Strips Explained! #shorts

11 Nov 2025 · 1 min

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0:52

YouTube short by Derek Cole explaining why electric HVAC heat strips can produce a burning smell after long idle periods: dust accumulates on the heating elements and burns off when first activated. The speaker says this smell is usually not dangerous — if it were a wiring overload it would trip the breaker — and recommends activating the heat strips during maintenance (before the first cold night) to burn off accumulated dust.

Chapters

Has gone from, I don't know, March, April. So March, April till now, without running heat strips. Without running heat. So what happens is dust builds up on those electric wires, and once those are activated, it burns it off. Therefore, you get a burning smell. So that is what you're getting in the house. Usually it's nothing dangerous. Now, if it was dangerous, it would obviously be too much for the wiring and trip the breaker and be a safety hazard. So if none of that is happening, then it's probably just burning off the excess dust from not being used. So that burning smell, when we come out and do a maintenance, we activate the heat strips this time of year to get out of the way. So that really first cold night, if you haven't used it already, you won't have that problem.