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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8 Items

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Set Descending Direction
  1. OT125N
    OptiTHERM modulating, condensing high-efficiency commercial water heater • 99 gallon • 125,000 BTU/hr • Natural Gas • NSF/ANSI certified • CUL listed
    Model: OT125N
    SKU: 55800
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  2. OT150N
    OptiTHERM modulating, condensing high-efficiency commercial water heater • 99 gallon • 150,000 BTU/hr • Natural Gas • NSF/ANSI certified • CUL listed
    Model: OT150N
    SKU: 55802
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  3. OT125LP
    OptiTHERM modulating, condensing high-efficiency commercial water heater • 99 gallon • 125,000 BTU/hr • LP Gas • NSF/ANSI certified • CUL listed
    Model: OT125LP
    SKU: 55810
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  4. OT150LP
    OptiTHERM modulating, condensing high-efficiency commercial water heater • 99 gallon • 150,000 BTU/hr • LP Gas • NSF/ANSI certified • CUL listed
    Model: OT150LP
    SKU: 55812
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  5. ODOT150N
    OptiTHERM Outdoor modulating, condensing high-efficiency commercial water heater • UL Listed for outdoor use in dry, warm climates • 99 gallon • 150,000 BTU/hr • Natural Gas • NSF/ANSI certified
    Model: ODOT150N
    SKU: 55910
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  6. ODOT125LP
    OptiTHERM Outdoor modulating, condensing high-efficiency commercial water heater • UL Listed for outdoor use in dry, warm climates • 99 gallon • 125,000 BTU/hr • LP Gas • NSF/ANSI certified
    Model: ODOT125LP
    SKU: 55918
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  7. ODOT150LP
    OptiTHERM Outdoor modulating, condensing high-efficiency commercial water heater • UL Listed for outdoor use in dry, warm climates • 99 gallon • 150,000 BTU/hr • LP Gas • NSF/ANSI certified
    Model: ODOT150LP
    SKU: 55916
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  8. ODOT125N
    OptiTHERM Outdoor modulating, condensing high-efficiency commercial water heater • UL Listed for outdoor use in dry, warm climates • 99 gallon • 125,000 BTU/hr • Natural Gas • NSF/ANSI certified
    Model: ODOT125N
    SKU: 55912
    View Product