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GWAxNTS2 Gas Water Atmospheric with x BTU Input, Stainless Steel Burners, Automatic Vent Damper and Cast Iron Sections with Built-In Air Separator, in Green

Quick Specs: View More

  • Width: 22"
  • Height: 52.375"
  • Depth: 23.25"

This GWA, Gas Water Atmospheric boiler uses inferred heat program to provide automatic adjustment of boiler water temperature to match your demand. Also featuring spark pilot system, control module with indicator lights, easy servicing, high efficiency, cast iron sections with built-in air separator and heavy-guage insulated steel jacket. Available at AppliancesConnection


Inferred Heat Program
Providing automatic adjustment of boiler water temperature to match demand

Spark Pilot System
Intermittent pilot system provides faster heating for house and sparks only when needed.

Easy Service
The one-piece access door makes it easy to gain access to al lthe controls which are all in easy reach

High Efficiency
Flue Baffle, stainless steel burners and automatic vent damper allows for high efficiency usage

Other Features

  • Control module with indicator lights
  • Cast iron sections with built-in air separator
  • Insulated heavy-guage steel jacket
  • Atomspheric chimney venting 


Width without Return Pipe:  
Height without Vent Damper: 28.375"
Depth: 23.25" 
Flue Diameter:  
Fuel Type: Natural Gas
Usage:  Residential
Capacity (Gallons):  
Heating Capacity (BTU):  
Net Rating (BTU):  
Installation: Indoor
Volts: 120 Volts
Warranty Terms:
1 Year on Parts, Lifetime on Heat Exchanger


Heavy Gauge Steel Jacket

Heavy Gauge Steel Jacket

The steel jacket provides great insulation.

Easy Service

Easy Service

One-piece access door with easy to reach controls makes servicing much easier

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  • Brand:Williamson-Thermoflo
  • Stock Id:703505
  • Product Number:GWAxNTS2


  • Fuel Type:Natural Gas
  • Tankless:No
  • BTU:Other
  • Installation:Indoor


  • Volts:120 Volts


  • Depth:23.25"

    Technical Details

  • Energy Star:No
  • Warranty Terms:1 Year on Parts, Lifetime on Heat Exchanger
  • Usage:Residential
  • Height without Vent Damper:28.375"
  • Weight:240.00 lbs