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Orders placed after 12/16/24 may not arrive before Christmas.
Orders placed after 12/16/24 may not arrive before Christmas.

Boiler Replacement Elements

We carry a wide variety of boiler replacement elements used in equipment such as steam generators, electric boilers, pressure vessels, and sterilizers, including:

  • 2-1/2" Square Flange
  • 3" Square Flange
  • 4-1/2" Square Flange
  • 6" Diameter Round Flange (aka 2" NPS)

If you don't see what you're looking for, please call us at 1-724-872-5007 or e-mail us at rheinhold@thermcoil.com.

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  • 378F-1455-020: Sussman / Mr. Steam 39183F, 39183FSS Equivalent
    Save 15% Save %

    18KW, 480V, 4-1/2" Square Flange Incoloy Alloy Boiler Element

    $ 602.10
    $ 602.10 - $ 602.10
    $ 602.10
    $ 511.79
    $ 511.79 - $ 511.79
    $ 511.79
    7+ in stock

    Therm Coil No.: 378F-1455-020 Product Description 18KW @ 480V With 10-1/8" Immersion Length and 4-1/2" SQ. Steel Flange. Application: Replaceme...

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    $ 602.10
    $ 602.10 - $ 602.10
    $ 602.10
    $ 511.79
    $ 511.79 - $ 511.79
    $ 511.79
    Save 15% Save %
  • 378F-1455-045: Sussman / Mr. Steam 39183B, 39183BSS Equivalent
    Save 15% Save %

    18KW, 208V, 4-1/2" Square Flange Incoloy Alloy Boiler Element

    $ 598.00
    $ 598.00 - $ 598.00
    $ 598.00
    $ 508.30
    $ 508.30 - $ 508.30
    $ 508.30
    3+ in stock

    Therm Coil No.: 378F-1455-045 Product Description 18KW @ 208V With 10-1/8" Immersion Length and 4-1/2" SQ. Steel Flange. Application: Replacemen...

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    $ 598.00
    $ 598.00 - $ 598.00
    $ 598.00
    $ 508.30
    $ 508.30 - $ 508.30
    $ 508.30
    Save 15% Save %
  • 378F-1455-025A: Sussman / Mr. Steam 39223F, 39223FSS Equivalent
    Save 15% Save %

    22.5KW, 480V, 4-1/2" Square Flange Incoloy Alloy Boiler Element

    $ 630.50
    $ 630.50 - $ 630.50
    $ 630.50
    $ 535.93
    $ 535.93 - $ 535.93
    $ 535.93
    Low Stock

    Therm Coil No.: 378F-1455-025A Product Description 22.5KW @ 480V With 15" Immersion Length and 4-1/2" SQ. Steel Flange. Application: Replaceme...

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    $ 630.50
    $ 630.50 - $ 630.50
    $ 630.50
    $ 535.93
    $ 535.93 - $ 535.93
    $ 535.93
    Save 15% Save %
  • 378F-1455-016: Sussman / Mr. Steam 39183C, 39183CSS Equivalent
    Save 15% Save %

    18KW, 240V, 4-1/2" Square Flange Incoloy Alloy Boiler Element

    $ 555.00
    $ 555.00 - $ 555.00
    $ 555.00
    $ 471.75
    $ 471.75 - $ 471.75
    $ 471.75
    33+ in stock

    Therm Coil No.: 378F-1455-016 Product Description 18KW @ 240V With 10-1/8" Immersion Length and 4-1/2" SQ. Steel Flange. Application: Replaceme...

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    $ 555.00
    $ 555.00 - $ 555.00
    $ 555.00
    $ 471.75
    $ 471.75 - $ 471.75
    $ 471.75
    Save 15% Save %
  • 378F-1455-039: Sussman / Mr. Steam 391203F, 39203FSS Equivalent
    Save 15% Save %

    20KW, 480V, 4-1/2" Square Flange Incoloy Alloy Boiler Element

    $ 598.00
    $ 598.00 - $ 598.00
    $ 598.00
    $ 508.30
    $ 508.30 - $ 508.30
    $ 508.30
    2+ in stock

    Therm Coil No.: 378F-1455-039 Product Description 20KW @ 480V With 10-1/8" Immersion Length and 4-1/2" SQ. Steel Flange. Application: Replacemen...

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    $ 598.00
    $ 598.00 - $ 598.00
    $ 598.00
    $ 508.30
    $ 508.30 - $ 508.30
    $ 508.30
    Save 15% Save %
  • 378F-1455-009: Sussman / Mr. Steam 39123F, 39123FS Equivalent
    Save 15% Save %

    12KW, 480V, 4-1/2" Square Flange Incoloy Alloy Boiler Element

    $ 555.00
    $ 555.00 - $ 555.00
    $ 555.00
    $ 471.75
    $ 471.75 - $ 471.75
    $ 471.75
    6+ in stock

    Therm Coil No.: 378F-1455-009 Product Description 12KW @ 480V With 10-1/8" Immersion Length and 4-1/2" SQ. Steel Flange. Application: Replaceme...

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    $ 555.00
    $ 555.00 - $ 555.00
    $ 555.00
    $ 471.75
    $ 471.75 - $ 471.75
    $ 471.75
    Save 15% Save %
  • 24KW, 240V, 15" Immersion, 4-1/2" Square Flange Incoloy Alloy Boiler Element
    Save 15% Save %

    24KW, 240V 3-PH, 15" Immersion, 4-1/2" Square Flange Incoloy Alloy Boiler Element

    $ 630.50
    $ 630.50 - $ 630.50
    $ 630.50
    $ 535.93
    $ 535.93 - $ 535.93
    $ 535.93
    3+ in stock

    Therm Coil No.: 378F-1455-053 Product Description 24kW @ 240V With 15" Immersion Length and 4-1/2" SQ. Steel Flange. Application: Replacement e...

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    $ 630.50
    $ 630.50 - $ 630.50
    $ 630.50
    $ 535.93
    $ 535.93 - $ 535.93
    $ 535.93
    Save 15% Save %
  • 378F-1455-038A: Sussman / Mr. Steam 391203C, 39203CSS Equivalent
    Call for Availability

    20KW, 240V, 4-1/2" Square Flange Incoloy Alloy Boiler Element

    $ 598.00
    $ 598.00 - $ 598.00
    $ 598.00
    $ 508.30
    $ 508.30 - $ 508.30
    $ 508.30
    Call for Availability

    Please Call For Lead Time Quote: 1-724-872-5007 Therm Coil No.: 378F-1455-038A Product Description 20KW @ 240V With 10-1/8" Immersion Length and ...

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    $ 598.00
    $ 598.00 - $ 598.00
    $ 598.00
    $ 508.30
    $ 508.30 - $ 508.30
    $ 508.30
    Call for Availability

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