- Vaporshield technology - Shuts off gas and air supply to heater to prevent prolonged vapor burn in combustion chamber should accidental or unattended ignition of flammable vapors occur outside the water heater
- Maintenance free
- Standard thermocouple
- Self-cleaning, Non-CFC foam insulated
- Heavy gauge steel tank, glass-lined tank, magnesium anode rod
- Factory installed dielectric hot and cold Water connections
- Brass drain valve, factory installed heat traps
- Temperature and pressure relief valve
- Factory installed energy cut-off system
- All models are certified at 300 psi test pressure and 150 psi working pressure
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50 Gallon 40,000 BTU Ultra-Low Nox Natural Gas Water Heater- 6 Year Warranty -
50 Gallon 40,000 BTU Ultra-Low Nox Natural Gas Water Heater- 6 Year Warranty
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50 Gallon 40,000 BTU Ultra-Low Nox Natural Gas Water Heater- 6 Year Warranty -
American Standard® Gas Water Heater, Series: GSN, 40000 Btu/hr Heating, Natural Gas, 50 gal Tank, Spark Ignition, 3 in Vent, 38 gph Recovery, Energy Factor: 0.6, 3/4 in NPT Water Connection, 150 psi, Tall or Short: Tall, Ultra Low Nox: No, Aluminum Anode Rod/Steel Tank, 20-5/16 in Diameter