40-Gallon Short Atmospheric Vent Natural Gas Water Heater - 12 Year Warranty

Model 12-40-NACS 400
Capacity (Gallons)
Limited Tank Warranty
Height Classification
Fuel Source
Advanced Options
First Hour Rating
Maximum BTU's
Side Loop
Diameter

  • 12-year limited tank & parts warranty, 1-year labor warranty
  • 40,000 BTU input for faster recovery
  • 67-gallon first hour rating

    • 40-Gallon Short Atmospheric Vent Natural Gas Water Heater - 12 Year Warranty
    Model 12-40-NACS 400
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    Product Details
    • 12-year limited tank & parts warranty, 1-year labor warranty
    • 40,000 BTU input for faster recovery
    • 67-gallon first hour rating
    • Electronic gas control valve provides precise temperature control and operational status
    • Self-cleaning PEX dip tube helps maintain efficiency and reduce maintenance
    • Glass-lined tank with dual heavy-duty anode rods to protect against corrosion
    • Environmentally-Friendly Non-CFC foam insulation
    • Piezo igniter allows for easy one-hand pilot ignition without matches
    • Factory-installed PEX polymer lined heat trap nipples
    • Factory-installed temperature & pressure (T&P) relief valve

      • The 12-40-NACS 40-Gallon Short Atmospheric Vent Natural Gas Water Heater is designed to deliver economical performance that can lower your energy bills. A 40-gallon (nominal) tank and a 40,000 BTU propane burner deliver a first hour rating of 67 gallons. This model carries a 12-year limited tank warranty.

    Specifications
    Tech Specs
    Nominal Gallon Capacity
    40 Gallons
    Rated Storage Volume
    38.2 Gallons
    Maximum BTUs
    40,000
    Power Source
    GAS
    Limited Tank Warranty
    12 Years
    Limited Parts Warranty
    12 Years
    T&P Relief Valve
    Yes
    Water Connection Location
    TOP
    Water Connection Size
    0.75"
    First Hour Rating
    67 Gallons
    ASME Certified
    No
    Blanket Included
    No
    Destination Country
    US
    Flue Diameter
    4.00
    Fuel Source
    NATURAL
    Height to T&P
    41.25
    Ignition Type
    Pilot with Piezo Igniter
    Installation Type
    INDOOR
    Application
    RESIDENTIAL
    Shipping Height 
    51.31
    Shipping Length 
    26.13
    Shipping Width 
    23.13
    Side Loop
    No
    Dimension & Venting
    Type
    Water Heater
    Height
    47.75"
    Diameter
    22 in."
    Shipping Weight
    135 lbs
    Vent Type
    Atmospheric Vent
    Height to Gas Valve
    12.5"
    Maintenance & Troubleshooting Videos
    Maintenance

    Residential Series Atmospheric Vent Lighting the Pilot

    Troubleshooting

    Residential Series Atmospheric Vent Draft Test

    Residential Series Atmospheric Vent No Hot Water

    Residential Series Atmospheric Vent Status Code 1 Flash

    Residential Series Atmospheric Vent Status Code 2 Flash

    Residential Series Atmospheric Vent Status Code 4 Flash

    Residential Series Atmospheric Vent Status Code 5 Flash

    Residential Series Atmospheric Vent Status Code 7 Flash

    Residential Series Atmospheric Vent Status Code 8 Flash

    Residential Series Atmospheric Vent Status Code Light Continuous

    Marketing Videos
    Residential Series Atmospheric Vent Application and Installation
    Residential Series Atmospheric Vent Features and Benefits
    Residential Series Atmospheric Vent How It Works