Bradford White 40 Gallon - 40,000 BTU Eco-Defender Safety System High Efficiency Ultra Low NOx Residential Water Heater (Nat Gas)

Eco-Defender Safety System® Ultra Low NOx Series water heaters from Bradford White utilize the latest advances in technology and materials for an ecologically friendly line of water heaters. Eco-Defender models emit 75% less NOx emissions than standard models while maintaining optimal combustion efficiencies, and consistent operational temperatures. Each and every one meets the most stringent air quality requirements for allowable NOx emissions in the country. Features: Defender Combustion Chamber - Incorporates the Advanced ScreenLok® Technology Flame Arrestor and large split-door design to prevent ignition of flammable vapors outside the water heater. Ultra Low NOx Burner with Primary and Secondary Air Distribution Devices - Ensures proper air to gas ratio for reduction of NOx generated by the combustion process. Digital Thermal Sensor and Resettable Thermal Switch - Coordinates with self diagnostic control to prevent water heater operation as needed. Millivolt Powered Control with Built-in Piezo Igniter...