Unheated but insulated unfinished basement. And this unit does have duct connections that I haven’t made use of (yet).

Hah, I do watch the channel, though was planning the upgrade before his specific influence. But I am inspired by his description of only running the WH at certain times of day (haven’t figured out how to do that yet).

I’ll have to watch how it changes in the winter.

I have a State, and actually the resistance heating is the 1st unit after the heat pump failed; then I got it replaced under (parts-but-not-labor) warrantee. So I’m a big fan of the technology but not the brand. However, the new State does have duct connections, maybe it’d be worth hooking those up. You like the Geospring?