cold
We put in mini splits last year, this is our first winter using them for heat. Called Mitsubishi to check on upcoming cold snap, they said system will stop working at 5 degrees. Well at least I kept the old heating system and can use that for a couple days. I asked the rep what happens if you don't have a secondary system and he said, we get some very angry calls! Quite a few houses now only use mini splits and it seems they may be in a bad place soon, at least it will be a short duration. Of course the electric went up quite a bit as soon as we installed the system, looking into solar now to offset the cost.
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