Short single-speaker video explaining that visible steam and a light burning smell from an outdoor heat pump during cold mornings are normal and caused by the unit entering a defrost cycle to remove light frost. The speaker reassures viewers that light frost is expected and that steam during defrost is not a sign of fire.
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 heat pump. Nothing like icy, just frost. So when he goes in, defrost cycle, it's going to burn that off and the steam will rise.
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