3.5 Ton "HB Compact Commercial" Series Water Source Heat Pump Packaged Unit/W CXM Control, Volts:460, Hertz:60, Phase:Three, Airflow:Horizontal, CFM:1000-1400, EER Rating:13.1, Cop:4.3, Refrigerant:R-410A (Factory Charged With 70 Ounces), Water Connection Size:3/4" FPT, Water Loop Heating/Cooling:52,700/40,100, Water Flow Rate:5.3-10.5 GPM, Coax Volume:0.890 Gallons, Supply Dims:10-1/2"H X 11"W, Return Dims:19"H X 26"W, Dimensions:21"H X 22"W X 48"D, Weight:225 Lbs, In Mfg Packaging, Made In . (Designed Specifically For Water Loop Boiler/Cooling Tower Applications)