ProLine® 51-Gallon Lowboy Top Connect Electric Water Heater

Model EN6-50-DOLS 120
4.8 out of 5 Customer Rating
ProLine® 51-Gallon Lowboy Top Connect Electric Water Heater is rated 4.0 out of 5 by 9.
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Capacity (Gallons)
First Hour Rating
Blanket
Limited Tank Warranty

  • Durable Heating Elements—Dual 4,500-watt commercial-grade heating elements deliver reliable and efficient hot water
  • Sturdy Build—Long-lasting lower Incoloy™ stainless steel element
  • Compact Design—Lowboy design with top connections is ideal for tight spaces or low height clearance

    • ProLine® 51-Gallon Lowboy Top Connect Electric Water Heater
    Model EN6-50-DOLS 120
    4.8 out of 5 Customer Rating
    ProLine® 51-Gallon Lowboy Top Connect Electric Water Heater is rated 4.0 out of 5 by 9.
    • y_2025, m_9, d_15, h_6
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
    • cp_1, bvpage1
    • co_hasreviews, tv_1, tr_8
    • loc_en_US, sid_en6-50-dols-120, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
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    Product Details
    • Durable Heating Elements—Dual 4,500-watt commercial-grade heating elements deliver reliable and efficient hot water
    • Sturdy Build—Long-lasting lower Incoloy™ stainless steel element
    • Compact Design—Lowboy design with top connections is ideal for tight spaces or low height clearance
    • Corrosion Protection—Patented Blue Diamond® glass tank lining protects against corrosion
    • Auto-Cleaning Feature—DynaClean™ automatic cleaning system protects against sediment build-up
    • Long-Lasting Anode—Stainless steel CoreGard™ anode rod protects against corrosion longer than ordinary anodes
    • 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
    • Peace of Mind—6-year limited tank and parts warranty for added peace of mind

      • The ProLine® Lowboy Electric water heater with top water connections is the reliable choice to maximize hot water output and energy savings. The EN6-50-DOLS incorporates a 51-gallon (nominal) tank and dual 4,500-watt elements to deliver a first hour rating of 51 gallons at a highly efficient 0.92 Uniform Energy Factor rating.

      Environmentally friendly insulation and factory-installed heat trap nipples reduce heat loss to optimize energy savings.

      This ProLine® water heater utilizes State's superior commercial-grade tank protection. Advanced tank features include a stainless steel CoreGard™ anode rod, Blue Diamond® glass lining and DynaClean™ automatic sediment-cleaning system—designed to help protect the tank from the corrosive effects of water and extend the life of the water heater. The EN6-50-DOLS has a 6-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
    51 Gallons
    Rated Storage Volume
    48 Gallons
    UEF
    0.92
    Power Source
    ELECTRIC
    Limited Tank Warranty
    6 Years
    Limited Parts Warranty
    6 Years
    Water Connection Location
    TOP
    Water Connection Size
    0.75"
    First Hour Rating
    51 Gallons
    ASME Certified
    No
    Blanket Included
    No
    Destination Country
    US
    Height to T&P
    26.43
    Installation Type
    INDOOR
    Max Wattage
    6,000
    Number of Elements
    2
    Application
    RESIDENTIAL
    Shipping Height 
    39.75
    Shipping Length 
    29.75
    Shipping Width 
    27.5
    Side Loop
    No
    Voltage
    208
    Dimension & Venting
    Type
    Water Heater
    Height
    36"
    Diameter
    26.5"
    Width
    26.5"
    Shipping Weight
    170 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® Lowboy Top-Connect (120 series)
    Rated 5 out of 5 by from Makes Hot Water Works well. I like having the short water heater on a stand instead of the old tall one on the floor.
    Date published: 2023-03-26
    Rated 5 out of 5 by from Long lasting My old State water heater just died after 27 years! So what else would I choose but another State water heater.
    Date published: 2020-04-02
    Rated 5 out of 5 by from HOT WATER We upgraded from the previous owners water heater. It was about 8 years old and only a 40 gallon heater.
    Date published: 2019-12-13
    Rated 4 out of 5 by from like i like it but i cant take a shower and do laundry at the same time.
    Date published: 2021-05-12
    Rated 4 out of 5 by from I see made in USA on it. If so that’s a big plus!! I have only had it a few days and so far I like it.
    Date published: 2018-09-29
    Rated 3 out of 5 by from Missing temperature/pressure relief valve. Water heater seems to be of solid construction; however, the relief valve was missing but the packaging had not been opened.
    Date published: 2024-06-17
    Rated 3 out of 5 by from Small size We had to use a low boy and it fits fine, but it takes so long for the hot water to reach the faucets/showers all of which are nearby the unit. I don't like wasting water waiting for it to heat up. What might cause this problem?
    Date published: 2021-01-01
    Rated 2 out of 5 by from Dissapointing I had no issue with this water heater until the thermostat failed out of nowhere. It was all covered under warranty but my faith in the product is lacking as I've only had it for 7 months. How long is the rest of the unit going to last? Being surprised with no hot water is not fun!
    Date published: 2019-04-19
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