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    Rheem Performance 40-Gallon Natural Gas Tank

    Model Number: XG40T06EC36U1

    The most popular like-for-like replacement for older 40-gallon gas tanks across Nassau County.

    0.58 UEF
    70 gal/hr
    40 gal

    Technical Specifications

    0.58

    UEF Rating

    70

    1st Hr Rating (gal)

    40

    Tank Capacity (gal)

    Heater Typetank
    Fuel Typegas
    BTU RangeUp to 36k
    Installed Price$1,500 – $2,200
    Tank Warranty6 years
    Parts Warranty6 years
    Labor Warranty1 year

    Key Features

    40-gallon capacity

    70 GPH first-hour rating

    Self-cleaning anode

    Atmospheric vent

    Pros & Cons

    Pros

    • Most affordable Rheem option
    • Easy direct replacement for Long Island homes
    • Wide parts availability
    • Atmospheric venting works in older Cape Cods

    Cons

    • Standard 6-year tank warranty (not 12)
    • Lower 0.58 UEF vs Platinum line
    • No smart features

    Best For

    Replacing an aging 40-gallon gas water heater on a tight budget

    Warranty Snapshot

    Tank: 6 years

    Parts: 6 years

    Labor: 1 year

    Register equipment with the manufacturer after installation to preserve coverage. We handle registration on Home+ installs.

    Expert Review

    When a 40-gallon gas tank fails in a Garden City, Hicksville, or Levittown ranch, this is the unit we install most. The Performance 40 is a true direct swap — atmospheric vent, standard 3" gas connection, 70 GPH first-hour rating handles a 3-bedroom home. Reliable, affordable, and parts are stocked locally.

    Frequently Asked Questions

    Ready to Install the Performance 40-Gal Gas?

    Get a free, no-obligation quote for professional water heater installation by licensed plumbers serving Nassau County.