Both my sauna and cold plunge are ‘manuals’ lol.

Wood fired sauna (hottest I got it was 195F), and the cold plunge (which is a big 3000 gallon old redwood water tank that I chopped the top off) sits under a canopy of redwoods which keeps it pretty cool. In the winter it ranges from 38F to about 50F depending on the weather.

I got a big as stove in the redwood tank too to make it into a hot tub when I want, but it takes like 10 hours of just burning shitloads of wood to heat up. It’s pretty sweet once I get it up to temp tho.