The Conservationist® BPD-80 tank-type commercial gas water heater is intended for applications such as small office buildings and duplex apartment homes. The BPD-80 features a power direct vent design with a factory-installed blower. The blower permits sealed combustion direct vent operation with separate venting and air intake runs from outside the structure. The BPD-80 offers installation versatility by allowing venting and intake runs up to 50 feet, using 3" Schedule 40 PVC pipe. The power direct-vent design also eliminates the potential for performance and safety problems caused by negative air pressure, a problem found in many commercial applications with inadequate indoor ventilation. A. O. Smith offers the largest commercial product selection available, including the most specified commercial unit in the U.S. We offer more than 500 different commercial models, including gas fired, oil-fired and electric configurations, ranging in capacities from 5 to 10,000 gallons, with input range from 50,000 BTU to the equivalent of 4,000,000 BTU. Our comprehensive line is the natural fit for spec jobs requiring everything from the smallest commercial installation up to the largest multi-structure complex.