Short YouTube video excerpt in which the presenter explains that visible steam and a temporary burning smell from an outdoor heat pump are normal results of the unit’s defrost cycle, which melts light frost on the outdoor coil to restore heating performance.
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 see that steam when it's a nice third degree morning, like this morning. Right. So that's completely normal. You should get a light little frost on that epunk. Nothing like ice, just frost. So when it goes in defrost cycle, it's going to burn that off and the steam will rise.
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