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No, Massachusetts, so probably warmer than you, depending on where you are.

Even in Canada, though, I'd look into whether heat pumps with resistive auxillary heat are economical. If it only ever goes below -20⁰F for, say, a week a year, you'd probably still come out on top. And you'd definitely come out on top environmentally if your electricity is mostly green.

And with heat strips, a heat pump unit can continue to provide heating even below -20. Heat strips do make the heat pump more expensive, but I would wager they're less expensive than having a separate furnace.

Have a look what's being used in the Nordics in Europe. Sweden has 90% share of heat pumps for residential heating systems for example. I've got a Panasonic that heats to -35°C as advertised by the manufacturer and-40°C as tested in the lab.

Canada's really big. Vancouver and Toronto are both definitely warm enough for a heat pump to make a ton of sense.