Alberta

I definitely should look at the details closer for our area. My big concern is with the big negatives, is mainly are these units going to last? Even though the ratings go to -15 or -20, the facts are that efficiency falls off a cliff even before you start getting into negative temps. At -15 you are using more energy than you would otherwise be with conventional heating sources. Now does that offset with more efficient days, I mean it probably does, it has to. But that doesn't factor wear and tear. I mean that might be concern that's all for naught too, but I just want to sit back a bit and see, personally.