ProLine® 40-Gallon Electric Water Heater

Model ESX-40-DONS 110
3.3 out of 5 Customer Rating
ProLine® 40-Gallon Electric Water Heater is rated 4.7 out of 5 by 580.
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Capacity (Gallons)
Limited Tank Warranty
Height Classification
Blanket
First Hour Rating

  • Steady Hot Water—Delivers 55 gallons of hot water in the first hour
  • 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

    • ProLine® 40-Gallon Electric Water Heater
    Model ESX-40-DONS 110
    3.3 out of 5 Customer Rating
    ProLine® 40-Gallon Electric Water Heater is rated 4.7 out of 5 by 580.
    • y_2025, m_9, d_3, h_9
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
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    • co_hasreviews, tv_120, tr_460
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    Product Details
    • Steady Hot Water—Delivers 55 gallons of hot water in the first hour
    • 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
    • HUD Compliant—Approved for use in mobile homes/manufactured housing
    • 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—10-year limited tank and parts warranty for added peace of mind

      • The State ProLine® Standard Electric water heater is the reliable choice when you want to maximize hot water output and energy savings. The ESX-40-DONS incorporates a 40-gallon (nominal) tank and dual 4,500-watt elements to deliver a first hour rating of 55 gallons at a Uniform Energy Factor of 0.92.

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

      This ProLine® water heater features State's advanced 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 ESX-40-DONS includes a 10-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
    40 Gallons
    Rated Storage Volume
    37 Gallons
    UEF
    0.92
    Power Source
    ELECTRIC
    Limited Tank Warranty
    10 Years
    Limited Parts Warranty
    10 Years
    T&P Relief Valve
    Yes
    Water Connection Location
    TOP
    Water Connection Size
    0.75"
    Emissions
    Low NOx
    First Hour Rating
    55 Gallons
    ASME Certified
    No
    Blanket Included
    No
    Destination Country
    US
    Height to T&P
    40.75
    Installation Type
    INDOOR
    Max Wattage
    4,500
    Number of Elements
    2
    Application
    RESIDENTIAL
    Shipping Height 
    53.63
    Shipping Length 
    23.69
    Shipping Width 
    21.5
    Side Loop
    No
    Voltage
    240
    Dimension & Venting
    Type
    Water Heater
    Height
    49.75"
    Diameter
    20.5"
    Width
    20.5"
    Shipping Weight
    98 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® Standard Electric (110 series)
    Rated 5 out of 5 by from Taking out the old and bringing in the New We had Aqua Guard dry in our basement and our water heater was in the way. They called Cool Master Services to come out and move our old water heater out of the way. The guy who came out asked how old our current water heater was and told us he had a new one in a box on hand. He said when he comes back, he would bring the new one. I said yes and glad I did. Our household is getting smaller and we didn't need the old one, not to mention the electric bill and water bill should also downsize in the future because we now have a brand new, more efficient water heater.
    Date published: 2025-08-13
    Rated 5 out of 5 by from Nice features I purchased this two monthly ago and its working great bought this two months ago and its working great.
    Date published: 2025-07-16
    Rated 5 out of 5 by from I don’t know how to adjust temperature I bought home three weeks ago so far is so good. I don’t have a problem with water heater.
    Date published: 2025-06-24
    Rated 5 out of 5 by from Replaced old one with same brand and model great product
    Date published: 2025-06-18
    Rated 5 out of 5 by from So many features to learn about It was just installed on 04/29/25 and so far it seems to be working fine with plenty of hot water!
    Date published: 2025-04-30
    Rated 5 out of 5 by from Great I bought a new house and it came with it perfect for my 3Br 2-1/2 br
    Date published: 2025-03-17
    Rated 5 out of 5 by from it's very tall and heater the water fast. I bought this water heater, and we are very happy.
    Date published: 2025-03-02
    Rated 5 out of 5 by from Great Water Heater The water heater was installed two years ago and it is still working great!
    Date published: 2025-02-17
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