I live in Alberta where the majority of the year is cold and snowy and my house stays at 74 f (23 c) until it warms up for summer then the A/C will run to cool it.
It may be excessive but I like to come home take off my snow gear and walk around in shorts and a t shirt like I'm in the Bahamas Meanwhile its -22 f (-30 c) and blistering winds outside...

I keep my current snakes in my room in the basement with RHPs.
My new boa is upstairs in a QT tub with just heat tape. I get about a 4 degree difference in room temp from upstairs to down stairs

Eventually I plan on changing one of my spare bedrooms into a snake room and will simply heat that room but for now, RHPs work well