I have no experiance of hot but it's the water freezing on the ground that bothers me the most...and when temps go seriously sub zero what would then be the benifit?
As for 1st cleans, personally I clean each new house twice anyhow so would hot change this requirement.
Like most I am very intrested in Hot but I have doubts about how it would benift me.
I am lucky to have a very large garage which I can run electric to heaters in the van and to my ro system...so it's the day to day use of hot than intrests me the most.
Cheers
Dave.