1 ½ thru 5 hp will maintain 1500-5000 gallons at temperatures from 65 degrees to 80 degrees. High performance scroll compressors insure reliable performance for years to come. Minimum Seer rating of 13 make these extremely energy efficient. Higher Seer rated Chillers available. Easy to install with fused disconnect and electronic controller installed. Available in 208/230v single or three phase.