I forgot to mention, we put in an outdoor hot tub, set at 102 degrees, it is wonderful for sore achy muscles, and I am sure costs less than the modifications for a new tub. I have been doing my own maintenance for the last 15 or so months with no problems, so my only costs are chemicals and filters. This gets used several times per week, year round.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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