Probably a dumb question but here goes:
Is it cheaper to set you tub at 80 degrees in the winter time if you are not going to use it versus just keeping it at 100? My heater turns on when it reaches 2 degrees below the set temperature. So, in other words, does it cost more to maintain a tub temperature of 100 degrees or 80 degrees?
My first thought would be 100 would be more expensive but once your tub gets down to 80 degrees, is there really a significant difference in the time it takes to go from 80 to 77 versus 100 to 97?
I am sure I learned the answer to this many years ago in school but have since destroyed those brain cells enjoying alcohol in the tub