ProLine Master® 55-Gallon Electric Water Heater

Model EN8-55-DORT 100
3.9 out of 5 Customer Rating
ProLine Master® 55-Gallon Electric Water Heater is rated 4.6 out of 5 by 5.
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Capacity (Gallons)
Limited Tank Warranty
Height Classification
Blanket
First Hour Rating

  • Steady Hot Water—Delivers 72 gallons of hot water in the first hour
  • Durable Heating Elements—Long-lasting upper and lower 4,500-watt Incoloy™ heating elements deliver reliable and efficient hot water
  • Long-Lasting Anode—Stainless steel CoreGard™ anode rod protects against corrosion longer than ordinary anodes

    • ProLine Master® 55-Gallon Electric Water Heater
    Model EN8-55-DORT 100
    3.9 out of 5 Customer Rating
    ProLine Master® 55-Gallon Electric Water Heater is rated 4.6 out of 5 by 5.
    • y_2025, m_12, d_5, h_11
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    Product Details
    • Steady Hot Water—Delivers 72 gallons of hot water in the first hour
    • Durable Heating Elements—Long-lasting upper and lower 4,500-watt Incoloy™ heating elements deliver reliable and efficient hot water
    • Long-Lasting Anode—Stainless steel CoreGard™ anode rod protects against corrosion longer than ordinary anodes
    • Corrosion Protection—Patented Blue Diamond® glass tank lining protects against corrosion
    • Auto-Cleaning Feature—DynaClean™ automatic cleaning system protects against sediment build-up
    • Simple Drainage—Commercial-grade brass drain valve for durable and easy operation
    • Factory-Installed Relief Valve—CSA certified and ASME rated T&P relief valve is factory-installed
    • HUD Compliant—Approved for use in mobile homes/manufactured housing

      • The ProLine® Master Standard Electric water heater with top water connections is the reliable choice when you want to maximize hot water output and energy savings. The EN8-55-DORT incorporates a 55-gallon (nominal) tank and dual 4,500-watt elements to deliver a first hour rating of 72 gallons at a highly efficient 0.93 Uniform Energy Factor rating.

      Environmentally-friendly insulation and factory-installed heat trap nipples reduce heat loss for maximum energy savings.

      This ProLine® Master water heater includes State's superior commercial-grade tank protection, including a stainless steel CoreGard™ anode rod, Blue Diamond® glass lining and DynaClean™ automatic sediment-cleaning—designed to help protect the tank from the corrosive effects of water and extend the life of the water heater. The EN8-55-DORT includes an 8-year limited tank warranty.

      State 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
    55 Gallons
    Rated Storage Volume
    55 Gallons
    UEF
    0.93
    Power Source
    ELECTRIC
    Limited Tank Warranty
    8 Years
    Limited Parts Warranty
    8 Years
    T&P Relief Valve
    Yes
    Water Connection Location
    TOP
    Water Connection Size
    0.75"
    Emissions
    Low NOx
    First Hour Rating
    72 Gallons
    ASME Certified
    No
    Blanket Included
    No
    Destination Country
    US
    Height to T&P
    48.50
    Installation Type
    INDOOR
    Max Wattage
    4,500
    Number of Elements
    2
    Application
    RESIDENTIAL
    Shipping Height 
    60.63
    Shipping Length 
    28.25
    Shipping Width 
    25.13
    Side Loop
    No
    Voltage
    240
    Dimension & Venting
    Type
    Water Heater
    Height
    56.5"
    Diameter
    24"
    Width
    24"
    Shipping Weight
    180 lbs
    Maintenance & Troubleshooting
    Maintenance

    Electric - Adjusting the Thermostat

    Electric - Checking and Replacing Lower Heating Element

    Electric - Checking and Replacing Upper Heating Element

    Electric - Not Enough Hot Water

    Electric - Replacing the Lower Thermostat

    Electric - Replacing the Upper Thermostat

    Troubleshooting

    Electric - No Hot Water

    Electric - Tripped ECO

    Marketing Videos
    Electric - Application and Installation
    Electric - Features and Benefits
    Electric - How It Works
    All Reviews for ProLine® Master Standard Electric (100 series)
    Rated 5 out of 5 by from Enjoying our hot water Bought a new home with this water heater. Not one problem so far and plenty of hot water!
    Date published: 2022-10-13
    Rated 5 out of 5 by from Very efficient unit My plumber recommended this and I’m glad he did because he said most of his customers use it.
    Date published: 2019-12-06
    Rated 4 out of 5 by from Peace Of Mind Despite its large capacity, (55 gals.) your water hear is narrower than my old appliance, and thus takes up less space. It heated the water up very quickly, and appears to be well-made and hopefully very reliable. Only time will tell. I paid more for the larger capacity and the peace of mind of having a longer warranty.
    Date published: 2021-02-05
    Rated 4 out of 5 by from Replacement Last State heater lasted 25 years, hope this one will last that long.
    Date published: 2019-08-26
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