The ProLine® XE Polaris® GHX 50 199 High Efficiency power direct vent gas water heater is the high performance answer for today's hot water needs. It can provide endless hot water and can be used for a combination of domestic hot water and space heating. Featuring a 50 gal (nominal) tank and a 199000 Btu natural gas burner, the Polaris® GHX 50 199 N power direct vent delivers a Thermal Efficiency of 96% and a recovery rate of 253 gph. It carries a 10-year limited tank warranty and meets Ultra-Low NOx emission requirements.