NAVIEN NPE-180S2 PREMIUM CONDENSING TANKLESS WATER HEATER, 10-150 MBTU, 3.9 GPM AT 75 RISE, FOR TECHNICAL SUPPORT AND WARRANTY PARTS PLEASE CALL 800-519-8794

[ "Condensing Tankless Water Heater", "Type Standard, High Efficiency", "Inlet/Outlet Connection 3/4 Inch Threaded x 3/4 Inch Threaded", "Gas Type Natural/Propane", "Gas Connection 1/2 Inch", "Venting Type Forced Draft Direct", "Draft Hood Outlet/Vent Size 2 Inch or 3 Inch", "Input Supply Rating 10000 to 150000 BTU/Hour", "Ignition Type Electronic", "Applicable Standard NSF, CSA, AHRI", "Lead-Free", "Overall Dimension 17.3 Inch Width x 13.2 Inch Depth x 27.4 Inch Height", "Installation Type Indoor/Outdoor Wall-Hung", "Material Cold Rolled Carbon Steel (Casing), Stainless Steel (Primary/Secondary Heat Exchanger)", "Power Supply Rating 120 Volt AC 60 Hertz, 200 Watt, 350 Watt with External Pump Connect", "Schedule 40", "Efficiency Rating 0.96 UEF (Energy Factor)", "Flow Rate 4.4 GPM (DHW)", "Water Pressure Rating 15 to 150 PSI", "Annual Energy Consumption 177 Therms/Year (Natural), 194 Therms/Year (Propane)" ]