Like John pointed out, a commercial pool has to run 24/7. The only wiggle room seems to be in the speed of the pump, bearing in mind the 3 turn overs a day rule.
I wonder how much excess capacity a system would have if it was designed for 24 hour service. I also wonder how much the health department would be willing to accept when you started slicing that spec too closely. If the design turnover rate was once every six hours, do they want to err on the safe side and want you to run it longer to deal with the system degrading with age. (filters become less efficient, pipes may scale up and the pump will wear).
The only way I see this really saving energy is if the system was over designed in the first place and you were turning the water over 4 or 5 times a day.
My wife is looking up the specs on the system as we speak to see what they can do.
BTW this is new Florida energy legislation coming up in July 2011. I am trying to find the bill.
