Goal: Make my home even more energy efficient. Even with low energy rates.
I have 2 pumps, standard 1.5HP 1.1SF (8a * 230v) and booster (6.4a * 230v). They are 9 years old and i tested the watts on each and discovered they run 1875w+1300w, when running together. I run the main pump 12 hours a day and the booster for 4 hours. (29k pool, standard Bleach)
I would like to replace these pumps with more energy efficient pumps.
My energy rate is slightly less than $.09 a Kwh. So i am thinking a basic two stage pump. But I am open to a VS pump, but not sure I can justify the additional expense. I am thinking of adding a SWG system in the future. But the autopilot says it needs atleast 20GPM to work? How can I tell if the low speed setting on pumps would meet that minimum requirement? (I would hate to have run in high mode to get SWG to work; defeats the purpose of energy reduction) Do other SWG systems have a minimum flow rate requirement too?
I have looked at simply replacing the motor (US Motor, AO Smith), but that appear to be as much as a brand new pump! $600-1100!
I am thinking of replacing my pressure Polaris with a robotic cleaner. 24volt should save some energy.
Any thoughts on the questions above concerning SWG minimum flow rate with 2 speed systems? Also what are the most energy efficient pumps these days? minimum number of amps or watts being used at the low speed?