ETT Manufacturers of : Packaged Roof Top Units, Swimming Pool Units Features include : Cooling Only Units, Heat Pumps, Cooling with Gas Fired Heating, Cooling and Heat Pump Units available with Water Cooled Compressors. Units available with Inverter Control to provide variable Refrigerant Flow to allow Modulation for varying loads. Heat Pump C.O.P’s can be increased by use of 4 Damper System with Reclaim of energy from exhaust air. Unit casings have 20 year anti-corrosion warranty. Ranges from 18 kW – 192 kW.