Derek Cole explains why your heat pump smells like burning and steams on cold mornings. It's entering defrost mode to melt frost off the outdoor unit, not catching fire. This is normal behavior around 30°F.
Gotten a few calls already about the units not heating. And probably the most common thing is what's the burning smell? Is my unit on fire and why is it on fire outside with the steam? Yeah, what's with that? So you have to explain it to them. If you have a heat pump, it has to go in what's called a defrost cycle. So it's going to burn off that frost that's on the outdoor unit. So you receive that steam when It's a nice 30 degree morning, like this morning. So that's completely normal. You should get a light little frost on that heat pump. Nothing like ice frost. So when it goes in defrost cycle, it's going to burn that off and the steam will rise.
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