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Heat pumps sold so fast in Maine, the state just upped its target
(www.canarymedia.com)
This is a most excellent place for technology news and articles.
That's not necessarily true now the newer systems can go to as low as -15F which in the north only happens for a few hours a year so still a reduction in heating gas/oils needed
I know the guy in the TC video used Chicago as an example but the "few hours a year" thing simply isn't true for many of us.
Where I live we had many days below -15f including a week where itpretty much stayed between -20 and -30 for nearly a week straight.
A Heat Pump will still work, even here, but you need to be careful about which one you purchase and how it handles cold weather.
Or remember when it "felt like" - 50° F for two days straight that one February?
I had to start my car up twice every night to keep the battery from dying.