ProLine® 50-Gallon Direct Vent Natural Gas Water Heater

Model GDV-50L
5 out of 5 Customer Rating
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Capacity (Gallons)
Fuel Source
Height Classification
Advanced Options
First Hour Rating
Side Loop
Maximum BTU's

  • Delivers 77-gallon first hour rating
  • 40,000 BTU input direct vent design delivers up to 0.66 Uniform Energy Factor
  • 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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    What to Expect from this Model
    modal-clock
    tooltip
    Number of minutes you can enjoy a shower before running out of hot water. Assumes a 2.1 GPM flow rate
    32.4 minutes
    single shower length
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    tooltip
    Number of back-to-back showers you can take without running out of hot water. Assumes a 2.1 GPM flow rate and an 8 minute shower length
    4.1 showers
    back-to-back
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    tooltip
    Number of showers you can take at the same time without running out of hot water. Assumes a 2.1 GPM flow rate and an 8 minute shower length
    2.9 showers
    at the same time
    modal-tank-capacity
    tooltip
    Biggest tub this water heater will fill without running out of hot water. Assumes a 5.0 GPM flow rate, and a 67% fill level
    77 gallons
    max tub size
    modal-cost
    tooltip
    The estimated annual cost to operate this water heater in your location
    $269/year
    est. energy cost
    Based on location results for Columbus, OH 43215
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    Edit Location / Advanced Settings
    Product Details
    • Delivers 77-gallon first hour rating
    • 40,000 BTU input direct vent design delivers up to 0.66 Uniform Energy Factor
    • 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
    • Includes side mounted recirculation taps for easy installation with combination space heating/potable water heating applications
    • 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 FVIR-compliant ProLine® 50-Gallon Direct Vent Natural Gas Water Heater heater is to designed to draw air from outside the home, eliminating problems caused by insufficient indoor ventilation. The unit has horizontal air intake and venting on all models up to 80” from the outside wall with no electrical power needed. Featuring a 50-gallon (nominal) tank and a 40,000 BTU gas burner, the GDV-50L Direct Vent delivers a first hour rating of 77 gallons and a recovery rate of 43 gallons per hour. It carries a 6-year limited tank 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 standard and are only available for purchase through professional wholesalers and contractors.

    Specifications
    Tech Specs
    Nominal Gallon Capacity
    50 Gallons
    Rated Storage Volume
    48 Gallons
    UEF
    0.66
    Maximum BTUs
    40,000
    Power Source
    GAS
    Limited Tank Warranty
    6 Years
    Limited Parts Warranty
    6 Years
    T&P Relief Valve
    TRUE
    Water Connection Location
    TOP
    Water Connection Size
    1"
    Emissions
    Low NOx
    First Hour Rating
    77 Gallons
    ASME Certified
    No
    Blanket Included
    No
    Destination Country
    US
    Flue Diameter
    4.00
    Fuel Source
    NATURAL
    Height to T&P
    51.75
    Ignition Type
    Pilot with Piezo Igniter
    Installation Type
    INDOOR
    Application
    RESIDENTIAL
    Product Tier
    ProLine®
    Shipping Height 
    71.5
    Shipping Length 
    31.5
    Shipping Width 
    23.5
    Side Loop
    Yes
    Dimension & Venting
    Type
    Water Heater
    Height
    58.75"
    Diameter
    22 in."
    Width
    22"
    Shipping Weight
    200lbs
    Vent Type
    Direct Vent
    Find a Replacement
    Current Product
    Option 2
    ProLine® 50-Gallon Direct Vent Natural Gas Water Heater
    ProLine® XE Ultra-Low NOx Indoor 180,000 BTU Condensing Natural Gas Tankless Water Heater
    GDV-50L
    ATI-340H
    current Product
    option 1
    Rebates up to $300 +
    Rebates up to $300 +
    Nominal Capacity
    50 Gallons
    Rated Storage Volume
    48 Gallons
    Diameter
    22 in."
    Width
    22"
    17.75"
    Depth
    29.75"
    11.25"
    Height
    58.75"
    23.625"
    Shipping Weight
    200lbs
    70lbs
    Power Source
    GAS
    GAS
    Limited Tank Warranty
    6 Years
    0 Years
    Limited Parts Warranty
    6 Years
    5 Years
    T&P Relief Valve
    TRUE
    Water Connection Location
    TOP
    BOTTOM
    Water Connection Size
    1"
    First Hour Rating
    77 Gallons
    Thermal Efficiency
    0%
    0%
    All Reviews for ProLine® Direct Vent (300 series)
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