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. ODOT300LP-A
    OptiTHERM Outdoor modulating, condensing high-efficiency commercial water heater • UL Listed for outdoor use in dry, warm climates • 125 gallon • 300,000 BTU/hr • LP Gas • ASME certified • NSF/ANSI certified
    Model: ODOT300LP-A
    BTU: 300,000 (87.92)
    Gal: 125 gallon
    SKU: 55870
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  2. ODOT400LP-A
    OptiTHERM Outdoor modulating, condensing high-efficiency commercial water heater • UL Listed for outdoor use in dry, warm climates • 125 gallon • 399,999 BTU/hr • LP Gas • ASME certified • NSF/ANSI certified
    Model: ODOT400LP-A
    BTU: 399,000 (116.94)
    Gal: 125 gallon
    SKU: 55868
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  3. ODOT500LP-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 • LP Gas • ASME certified • NSF/ANSI certified
    Model: ODOT500LP-A
    BTU: 500,000 (146.50)
    Gal: 125 gallon
    SKU: 55866
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  4. OT300LP2
    OptiTherm modulating condensing high effeciency commercial water heater. 119 gallons. 300,000 BTU/hr. LP Gas. NSF/ANSI Certified. UL Listed
    Model: OT300LP2
    BTU: 300,000 (87.92)
    Gal: 119 gallon
    SKU: 55697-2
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  5. OT400LP2
    OptiTherm modulating condensing high effeciency commercial water heater. 119 gallons. 400,000 BTU/hr. LP Gas. NSF/ANSI Certified. UL Listed
    Model: OT400LP2
    BTU: 400,000 (117.23)
    Gal: 119 gallon
    SKU: 55700-2
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  6. OT500LP2
    OptiTherm modulating condensing high effeciency commercial water heater. 119 gallons. 500,000 BTU/hr. LP Gas. NSF/ANSI Certified. UL Listed
    Model: OT500LP2
    BTU: 500,000 (146.50)
    Gal: 119 gallon
    SKU: 55702-2
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  7. 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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  8. 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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  9. OT500LP2-A
    OptiTherm modulating condensing high effeciency commercial water heater. 125 gallons. 500,000 BTU/hr. LP Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT500LP2-A
    BTU: 500,000 (146.50)
    Gal: 125 gallon
    SKU: 55695-2
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