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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  1. OT800LP-A-H28
    OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 800,000 BTU/hr. LP Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT800LP-A-H28
    Gal: 130 gallon
    SKU: 55968
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  2. OT900LP-A-H28
    OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 900,000 BTU/hr. LP Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT900LP-A-H28
    Gal: 130 gallon
    SKU: 55970
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  3. ODOT500N2-A
    OptiTHERM Outdoor modulating, condensing high-efficiency commercial water heater • UL Listed for outdoor use in dry, warm climates • 125 gallon • 500,000 BTU/hr • Natural Gas • ASME certified • NSF/ANSI certified
    Model: ODOT500N2-A
    BTU: 500,000 (146.50)
    Gal: 125 gallon
    SKU: 55860-2
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  4. 150G-800
    ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNER
    Model: 150G-800
    BTU: 800,000 (234.46)
    Gal: 160 gallon
    SKU: 56765
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