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. 541PG NAT MIDCO ASME
    ASME CONSTRUCTION, POWER GAS WATER HEATER WITH MIDCO RE4700BA NATURAL GAS BURNER
    Model: 541PG NAT MIDCO ASME
    BTU: 623,000 (182.58)
    Gal: 83 gallon
    SKU: 58180
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  2. 541PG LP MIDCO ASME
    ASME CONSTRUCTION, POWER GAS WATER HEATER WITH MIDCO RE4700BA LP GAS BURNER
    Model: 541PG LP MIDCO ASME
    BTU: 623,000 (182.58)
    Gal: 83 gallon
    SKU: 58185
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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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