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Gas Water Heaters

Bock is your first choice for all your commercial gas water heater needs. Our industry leading optiTHERM modulating condensing water heaters in sizes up to 500,000 BTU, provide up to 99% thermal efficiency, have an automatic cathodic protection system, LCD user interface and five year warranty.

Our EZ Fit atmospheric water heaters are easy to install and available in Power Direct Vent, Low NOx, Internal Coil and a host of other models.

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Items 1-9 of 19

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Items 1-9 of 19

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  1. 150-400,ASME,GAS
    150G-400
    ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNER
    Model: 150G-400
    BTU: 400,000 (117.23)
    Gal: 160 gallon
    SKU: 56701
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  2. 75W-300SD-XA-A
    75W-300SD-XA-A
    ASME CONSTRUCTED, NATURAL GAS BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 75W-300SD-XA-A
    BTU: 300,000 (87.92)
    Gal: 75 gallon
    SKU: 55133
    View Product
  3. 66W-370SD-XA-A
    66W-370SD-XA-A
    ASME CONSTRUCTED, NATURAL GAS BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 66W-370SD-XA-A
    BTU: 370,000 (108.44)
    Gal: 65 gallon
    SKU: 55137
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  4. 80W-425SD-XA-A
    80W-425SD-XA-A
    ASME CONSTRUCTED, LP BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 80W-425SD-XA-A
    BTU: 425,000 (124.56)
    Gal: 80 gallon
    SKU: 55147
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  5. 75W-300SDLN-XA-A
    75W-300SDLN-XA-A
    ASME CONSTRUCTED, L.P. GAS LO-NOX BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 75W-300SDLN-XA-A
    BTU: 300,000 (87.92)
    Gal: 75 gallon
    SKU: 55364
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  6. 66W-370SDLN-XA-A
    66W-370SDLN-XA-A
    ASME CONSTRUCTED, L.P. GAS LO-NOX BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 66W-370SDLN-XA-A
    BTU: 370,000 (108.44)
    Gal: 65 gallon
    SKU: 55372
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  7. 200-450,ASME,GAS
    200G-450

    ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNER

    Model: 200G-450
    BTU: 450,000 (131.88)
    Gal: 192 gallon
    SKU: 56656
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  8. OT300LP2-A
    OT300LP2-A
    OptiTherm modulating condensing high effeciency commercial water heater. 125 gallons. 300,000 BTU/hr. LP Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT300LP2-A
    BTU: 300,000 (87.92)
    Gal: 125 gallon
    SKU: 55690-2
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  9. OT400LP2-A
    OT400LP2-A
    OptiTherm modulating condensing high effeciency commercial water heater. 125 gallons. 400,000 BTU/hr. LP Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT400LP2-A
    BTU: 400,000 (117.23)
    Gal: 125 gallon
    SKU: 55692-2
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