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Drain pan heater for mitsu H2i in cold climate?

I've heard both ways--always put them in, or shouldn't ever need one.

The energy drag is not small, 80-100 W when temps drop below 37. Not sure if that's constant or only when defrost mode kicks on. So far I haven't put them in and it looks like the units I have up high (8-12") are okay this winter; almost had some problems with one that's only up 4 " and had completely iced up underneath. Just wondering if there is a consensus out there?


  • bnjmnbnjmn Member Posts: 45
    I put them on every unit I install. I have seen ice build up damage lower sections of the outdoor coil. I live in Montana, lots of snow with cold temps.
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