Radio Flyer, Inc. Home » Markets We Serve » Manufacturing » Radio Flyer, Inc. Project DescriptionThe Hill Group has been selected as the HVAC contractor for this 70,000 square foot redevelopment and renovation project. The project includes Geothermal field including 72 wells, each 450 feet deep, horizontal piping and a manifold vault22 geothermal water source-to-air heat pumpsAn air handling unit with outside air intake pre-treated with a 3,000 square foot roof mounted solar wallDedicated outside air energy recovery ventilation unitA high efficiency condensing boiler as a back-up for the geothermal heating systemA water-to-water heat pump to heat domestic waterGeothermal and condenser water pumps controlled by Variable Frequency DrivesSupply, return and outside air intake ductworkDDC temperature controls