ProLine® 75-Gallon High Recovery Atmospheric Vent Natural Gas Water Heater

Model FCG-75 400
3.5 out of 5 Customer Rating
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Fuel Source
Capacity (Gallons)
Limited Tank Warranty
Side Loop

  • Delivers 125-gallon first hour rating
  • High capacity gas water heater uses 75,100 BTU atmospheric vent input
  • Patented eco-friendly Green Choice® Gas Burner design reduces NOx emissions by up to 33% and complies with Low-NOx emission requirements

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    Product Details
    • Delivers 125-gallon first hour rating
    • High capacity gas water heater uses 75,100 BTU atmospheric vent input
    • Patented eco-friendly Green Choice® 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
    • Fully automatic controls with safety shutoff, requires no power
    • Patented Blue Diamond® glass tank lining protects against corrosion
    • DynaClean™ automatic cleaning system protects against sediment build-up
    • Stainless steel CoreGard™ 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

      • The ProLine® 75-Gallon High Recovery Atmospheric Vent Natural Gas Water Heater is designed for reliable performance, reduced NOx emissions and has 80% thermal efficiency. Featuring a 74-gallon (nominal) tank and a 75,100 BTU gas burner, a Uniform Energy Factor of 0.60, and a recovery rate of 81 gallons per hour. It carries a 6-year limited warranty, and meets Low NOx emission requirements. Environmentally-friendly insulation and factory-installed heat trap nipples reduce heat loss for maximum energy savings. This ProLine® water heater is designed with A. O. Smith's superior commercial-grade tank protection. Advanced tank features include stainless steel CoreGard™ anode rod, Blue Diamond® glass lining and DynaClean™ automatic sediment-cleaning system, all designed to help protect the tank from the corrosive effects of water and extend the life of the water heater. A. O. Smith’s ProLine® water heaters are residential products built to commercial-grade standards and are only available for purchase through professional wholesalers and contractors.

    Specifications
    Tech Specs
    Nominal Gallon Capacity
    74 Gallons
    Rated Storage Volume
    71 Gallons
    UEF
    0.6
    Thermal Efficiency
    80%
    Maximum BTUs
    75,100
    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
    1"
    Emissions
    Low NOx
    First Hour Rating
    125 Gallons
    ASME Certified
    No
    Blanket Included
    No
    Destination Country
    US
    Flue Diameter
    5.00
    Fuel Source
    NATURAL
    Ignition Type
    Pilot with Piezo Igniter
    Installation Type
    INDOOR
    Application
    RESIDENTIAL
    Product Tier
    ProLine®
    Recovery Rise at 90°F
    81
    Shipping Height 
    61.25"
    Shipping Length 
    33.25"
    Shipping Width 
    29.75"
    Side Loop
    No
    Dimension & Venting
    Type
    Water Heater
    Height
    57"
    Diameter
    26.39 in."
    Shipping Weight
    270lbs
    Vent Type
    Atmospheric Vent
    Maintenance & Troubleshooting
    Maintenance

    Residential ProLine® Series Atmospheric Vent Application and Installation

    Residential ProLine® Series Atmospheric Vent Lighting the Pilot

    Troubleshooting

    Residential ProLine® Series Atmospheric Vent Draft Test

    Residential ProLine® Series Atmospheric Vent No Hot Water

    Residential ProLine® Series Atmospheric Vent Status Code 1 Flash

    Residential ProLine® Series Atmospheric Vent Status Code 2 Flash

    Residential ProLine® Series Atmospheric Vent Status Code 4 Flash

    Residential ProLine® Series Atmospheric Vent Status Code 5 Flash

    Residential ProLine® Series Atmospheric Vent Status Code 7 Flash

    Residential ProLine® Series Atmospheric Vent Status Code 8 Flash

    Residential ProLine® Series Atmospheric Vent Status Code Light Continuous

    Marketing Videos
    Residential ProLine® Series Atmospheric Vent Features and Benefits
    Residential ProLine® Series Atmospheric Vent How It Works
    Find a Replacement
    Current Product
    Option 2
    ProLine® 75-Gallon High Recovery Atmospheric Vent Natural Gas Water Heater
    ProLine® XE Ultra-Low NOx Indoor 199,000 BTU Condensing Natural Gas Tankless Water Heater
    FCG-75
    ATI-540H
    current Product
    option 1
    Rebates up to $300 +
    Rebates up to $300 +
    Nominal Capacity
    74 Gallons
    Rated Storage Volume
    71 Gallons
    Diameter
    26.39 in."
    Width
    17.75"
    Depth
    26.5"
    11.25"
    Height
    57"
    23.63"
    Shipping Weight
    270lbs
    70lbs
    Power Source
    GAS
    GAS
    Limited Tank Warranty
    6 Years
    15 Years
    Limited Parts Warranty
    6 Years
    5 Years
    T&P Relief Valve
    Yes
    Water Connection Location
    TOP
    BOTTOM
    Water Connection Size
    1"
    First Hour Rating
    125 Gallons
    Thermal Efficiency
    80%
    0%
    All Reviews for ProLine® High Capacity Atmospheric Vent (400 series)
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