I definitely thought those were carrots. That certainly changes things

Maybe need to get induction instead of radiant? Induction is much more efficient.

All space heaters operate at the same efficiency since they convert electricity to heat via resistance. You may have a small one and low electricity rates in your area to see a negligible change. Or maybe other uses went down and masked the increase from the space heater usage.

Really exciting development for the climate change mitigation toolkit. Let’s hope it’s not too challenging or costly to scale up and deploy.

The recovery time, aka first hour rating, should be in the specs for the models to find one that suits your needs. There’s more detailed research on them available as well if you’re so inclined.

You can, but not as a heat pump so you wouldn’t get all the efficiency gains and it will very often end up being more expensive to run than gas tankless in the near term.

Some are parasitic, most are saprophytic (decomposers/recyclers), others are symbiotic and exchange nutrients with trees

Yeah, those are all good points and certainly factor in. There are objective studies about human comfort preferences used for building design. I expect OPs question is a roundabout way to ultimately ask about comfort preferences.

I do 80F during the day and 78F at night in the pacific northwest US. It usually gets cold enough at night that opening windows will cool my house to the low 70s overnight. In the winter I have it set to 68F. I use ceiling fans and appropriate clothing to stay comfortable within those parameters.

A bidet. You can install it yourself in 20 minutes and enjoy a lifetime of cleaner buttholes and save on tp.

I can’t wait to switch mine to induction as well. I always run the fume hood with gas but it still feels like it’s not capturing most of the fumes