American Standard GSN40L2-3-6 NAT

American Standard GSN40L2-3-6 NAT Low NOx Residential Gas Water Heater, 40 gal Tank, 37,000 BTU input, Natural Gas, 6 Year Warranty


Manufacturer part number:


GTIN: 00817215021191

American Standard


American Standard® Water Heaters is the recognized brand of larger homeowners as the most reliable, for their unique water heating requirements. Larger residential homes require different water heating solutions, compared to typical residences and American Standard delivers. American Standard® Gas Water Heater, Series: GN Series, 37000 Btu/hr Heating, Natural Gas, 40 gal Tank, Spark Ignition, 3 in Vent, 35 GPH Recovery, Energy Factor: 0.63, 3/4 in NPT Water Connection, 150 psi, Ultra Low Nox: Yes, Magnesium Anode Rod/Steel Tank

• Complies with NAECA - CSA Certified & Meets ANSI & Energy Efficiency

• 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.

• Spark Igniter- Affords push button pilot lighting in lieu of matches

• Maintenance Free- No periodic cleaning of combustion air inlet necessary under normal conditions

• Self-Cleaning - Turbulence inducing cold water inlet-tube engineered to diminish hard water area sediment deposits.

• Non-CFC Foam Insulated - Maximizes heat retention • Heavy Gauges Steel Tank - For extra years of trouble-free service

• Glass-Lined Tank - Inner Tank glass-lined with Dura-Glas and fired at 1600 degrees for optimum protection from the effects of corrosion

• Aluminum Anode Rod - To protect Tank life • Brass Drain Valve (Full Port Ball) - Allows for easy draining and avoid clogging

• Factory Installed Heat Traps

• Temperature and Pressure Release Valve - Can be relocated from side to optional top opening

• All models are certified at 300 psi test pressure and 150 psi working pressure

• 6 Year Limited Tank & Component Parts Warranty

Products specifications
Attribute nameAttribute value
DimensionsJacket Diameter: 22-3/8 Inch, Height to Top of Heater: 49 Inch, Height to Top of Water: 50-1/2 Inch, Height to Side T&P: 42-3/8 Inch, Height to Top of Vent: 52-5/16 Inch
Energy Efficiency0.60
FinishSteel Tank
Gas TypeNatural Gas
Heating Capacity37000 Btu/Hr
Ignition TypeSpark
ManufacturerAmerican Standard
MaterialAluminum Anode Rod/Steel Tank
Recovery Rate35 GPH
Tank Capacity40 gallon
Water Connection3/4 Inch NPT