The ProLine gas water heater is designed to deliver an economical performance that can lower your energy bills and also provide long-lasting value. Featuring a 40 gal (nominal) tank and a 40000 Btu gas burner, the HWR-40 Standard Vent delivers a first hour rating of 70 gal and a recovery rate of 42 gph. With an 0.66 Uniform Energy Factor, this water heater is not Energy Star qualified. It carries a 8-year limited tank warranty and meets Low NOx emission requirements.
Intelligent control logic - The internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response to optimize performance|Uses a thermopile to generate the power needed to operate the electronic gas control without requiring an external power source|The electronic gas control incorporates and LED status indicator that monitors system operation and service diagnostics|DynaClean diffuser dip tube - Reduces lime and sediment buildup and maximizes hot water output|Made from long-lasting PEX cross-linked polymer|Green Choice gas burner - Patented eco-friendly burner design reduces NOx emissions by up to 33% and complies with Low-NOx emission requirements of less than 40 ng/J|Coregard anode rod - Our anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection far longer than standard anode rod|ProLine master products have increased anode protection with either longer or multiple anodes depending on model|Push button piezo igniter makes lighting the pilot fast and easy with one hand|Heat trap nipple - Factory installed for faster installation|Blue Diamond glass coating - Provides superior corrosion resistance compared to the industry standard glass lining|Blue Diamond glass coating blend is formulated in the same lab that creates the protection for our industry-leading commercial product line|Enhanced-flow brass drain valve - Our residential water heaters have a solid brass, tamper resistant, enhanced flow, ball type, drain valve|Uses a standard female hose fitting that allows for fast and easy draining during maintenance|Designed for easy operation, this valve includes an integral screwdriver slot that features a 1/4 turn (open/close) radius, which not only permits full straight-through water flow but also a quick and positive shut off|High uniform energy factor - Eco-Friendly non-CFC foam insulation, external heat traps and specially designed combustion chamber combine to produce a high UEF for maximum savings on operating costs|All models approved for installation from sea level to 10100 ft elevation
AO Smith ProLine Master Gas Water Heater, Series: HWR-40, 40000 Btu/hr Heating, Natural Gas, 1/2 in Gas Connection, 40 gal Tank, Piezo Pushbutton Ignition, Atmospheric Vent, 3 in and 4 in Vent Size, 42 gph at 90 deg F Rise Recovery, 0.66 Energy Factor, 3/4 in Water Connection, 150 psi, Tall, Ultra Low NOx: No, 20 in Dia x 61-3/4 in H