American Standard GSN40T-2-3-6 NAT

American Standard GSN40T-2-3-6 NAT Residential Gas Water Heater, 40 gal Tank

AMS-GSN40T-2-3-6 NAT

Manufacturer part number:



American Standard


All models comply with NAECA requirements  

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.

PIEZO IGNITER — Affords push button pilot lighting in lieu of matches.

MAINTENANCE FREE — No periodic cleaning of combustion air inlet necessary under normal conditions. STANDARD THERMOCOUPLE — Design provides for use of either factory supplied thermocouple or standard replacement thermocouple.

SELF-CLEANING — Turbulence inducing cold water inlet-tube engineered to diminish hard water area sediment deposits. NON-CFC FOAM INSULATED — Saves energy and reduces fuel costs by maximizing heat retention.

HEAVY GAUGE STEEL TANK — For extra years of trouble-free service. GLASS-LINED TANK — Inner tank glass-lined with Dura-Glas™ and fired at 1600° F for optimum protection from the effects of corrosion.

ALUMINUM ANODE ROD — To protect tank life.

FACTORY INSTALLED DIELECTRIC HOT & COLD WATER CONNECTIONS — 3/4" NPT water connections to extend tank life and for easier installations.

BRASS DRAIN VALVE — Durable to prevent unintentional breakage. FACTORY INSTALLED HEAT TRAPS — Reduces standby heat loss in water piping. TEMPERATURE & PRESSURE RELIEF VALVE— Factory provided T & P Valve can be relocated from side to optional top opening.

FACTORY INSTALLED ENERGY CUT-OFF SYSTEM — Automatic thermostat with built-in gas pressure regulation also incorporates energy cut-off switch to prevent abnormally high water temperature for added safety.

DESIGN CERTIFIED BY CSA INTERNATIONAL — To meet or exceed ANSI requirements and tested in accordance with D.O.E. test procedures and meets or exceeds the energy efficiency requirements NAECA, ASHRAE and all state energy efficiency standards.

CHOICE OF SIX OR TWELVE YEAR LIMITED TANK WARRANTIES — Includes 6 or 12 Year Limited Warranty on Component Parts.

Products specifications
Attribute nameAttribute value
Energy Efficiency0.64
FinishSteel Tank
Gas TypeNatural Gas
ManufacturerAmerican Standard
MaterialAluminum Anode Rod/Steel Tank
Tank Capacity40 gal
Water Connection3/4 Inch NPT