40-Gallon Atmospheric Vent Short Natural Gas Water Heater

Model GSN04040B 400
Capacity (Gallons)
Limited Tank Warranty
Height Classification
Fuel Source
Advanced Options
First Hour Rating
Maximum BTU's
Side Loop
Diameter

  • Delivers 67-gallon first hour rating
  • 40,000 BTU input atmospheric vent design delivers up to 0.58 Uniform Energy Factor
  • Gas Burner design reduces NOx emissions by up to 33% and complies with Low-NOx emission requirements
  • 40-Gallon Atmospheric Vent Short Natural Gas Water Heater
    Model GSN04040B 400
    Product Details
    • Delivers 67-gallon first hour rating
    • 40,000 BTU input atmospheric vent design delivers up to 0.58 Uniform Energy Factor
    • Gas Burner design reduces NOx emissions by up to 33% and complies with Low-NOx emission requirements
    • Push-button piezo ignitor makes lighting pilot fast & easy
    • Intelligent electronic gas control provides precise temperature control and LED status indicator
    • Glass tank lining protects against corrosion
    • Automatic cleaning system protects against sediment build-up
    • Stainless steel anode rod protects against corrosion longer than ordinary anodes
    • Commercial-grade brass drain valve for durable and easy operation
    • 6-year limited tank and parts warranty

    • 40-Gallon Atmospheric Vent Short Natural Gas Water Heater is designed to deliver an economical performance that can lower your energy bills and also provide long-lasting value.

    Specifications
    Tech Specs
    Nominal Gallon Capacity
    40 Gallons
    Rated Storage Volume
    38 Gallons
    UEF
    0.57
    Maximum BTUs
    40,000
    Power Source
    GAS
    Limited Tank Warranty
    6 Years
    Limited Parts Warranty
    6 Years
    T&P Relief Valve
    Yes
    Water Connection Location
    TOP
    Water Connection Size
    0.75"
    First Hour Rating
    68 Gallons
    ASME Certified
    No
    Blanket Included
    Yes
    Destination Country
    US
    Flue Diameter
    4.00
    Fuel Source
    NATURAL
    Height to Gas Valve
    12.50
    Height to T&P
    41.25
    Ignition Type
    Pilot with Piezo Igniter
    Installation Type
    INDOOR
    Application
    RESIDENTIAL
    Shipping Height 
    51.31"
    Shipping Length 
    26.63"
    Shipping Width 
    21.13"
    Side Loop
    No
    Dimension & Venting
    Type
    Water Heater
    Height
    47.75"
    Diameter
    20 in."
    Shipping Weight
    134lbs
    Vent Type
    Atmospheric Vent
    Product Literature
    Energy Guide