• Space saver design Xtreme maximizes installation adaptability by offering models with front and rear inlet/outlet water connections, short heights and small jacket diameters result in greater installation flexibility
• System Sentinel LED diagnostic system our exclusive diagnostic system, with glowing LED lights, verifies system operation sequence by sequence, patented multi-flue tank design
• Patented multi-flue tank design proprietary steel formulation, patented multi-flue design, and two coats of high temperature porcelain enamel maximize corrosion-resistance and result in a superior heat exchanger design
• Automatic flue damper low profile design minimizes overall product height, heavy-duty vent hood supports are designed to withstand rigors of installation
• Specialized burner assembly each model features 5 premix burners mounted into a metal face plate and sealed with a Viton gasket, patented ''quick release'' manifold for easier service
• Direct spark-to-pilot ignition system energy saving ignition that ignites pilot only when there is a call for heat
• Round premix burners precision burners are formed from high chromium stainless steel
• Low NOx emissions GX90-550 and GX90-640 meet low NOx emissions of less than 40 ng/J full-port, full-flow drain valve
• Full-port, full-flow drain valve factory installed brass drain valve allows for faster draining and servicing
• Altitude certifications standard natural and LP models are certified up to 2000''. High altitude models, 8000''
• Anode rods patented design utilizes multiple magnesium rods to ensure long life and corrosion-resistance

Xtreme is an advanced line of fast recovery commercial gas water heaters. These products can deliver up to 693 gph at 100 deg F rise. The small jacket diameter makes it a popular choice for retro fits and it is a versatile choice for new construction. Models range from 500000-715000 Btu/h, with a maximum temperature setting of 180 deg F.