I have Hi2 heat pumps in a 100yo house with recently improved insulation, and it was just fine last year in -15F weather. No gas backup.
One family member has been talking to installers and they keep telling her that heat pumps can’t work reliably, it’s extremely frustrating.
Nice! Direct link. The Atlantic’s crossword was outpacing my mini-crossword abilities/patience.
I wish them well, I would like to see more unions in tech.