We currently have a two year old 460933, in commercial use in an RV park 40,000 gal. pool. However we are in the desert and experience water temps in the mid 90's in the summer. I'm guessing their is no economical way to add cooling to the 933. If there is please recommend the proper add on equipment. If not would the 935 be the right upgrade to provide cooling capability down to 82 to 84 degrees?