All of the standard features and premier options available on AAON air conditioning and air handling units are available on AAON heat pumps, including Double Wall Rigid Polyurethane Foam Injected Panel Construction with an R-value of 13 or greater, 10-100% Variable Capacity Scroll Compressors, Variable Speed Scroll Compressors, Modulating Humidity Control, Factory Installed Total and Sensible Energy Recovery Wheels, High Efficiency Filtration, Make Up Air Capability, Economizers, VFD Controlled Supp, Return and Exhaust Fans, Hinged Access Doors, Access to All Sections of the Unit, Factory Installed Controls Flexibility, and Electric, Gas, Steam, and Hot Water Auxiliary Heating.