At the moment we are planning the chilling ad deciding whether its worth bringing in 3 phase service to the house. Its down the street but it massive drowning and big bux to get it. May just mean we use the 2 phase and have more smaller chillers. Which for redundency may not be so bad. These are professional trane units like 10 hp each and i may need 6 of them. This project is really more nuts than i imagined. They have to dig grade below in house just to get tank in house then backfill. As it is tank will sit 2 feet below grade and still be7 ft tall to eye. So nine foot high tank by about 15 and change feet cubed length and width. I will put up the schematics Lets notbforget the other massive sps tank that will be almost 3k gallons and some of the craziest built in the ground custom poly sumps.