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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541PG NAT MIDCO ASMEASME CONSTRUCTION, POWER GAS WATER HEATER WITH MIDCO RE4700BA NATURAL GAS BURNERView ProductModel: 541PG NAT MIDCO ASMEBTU: 623,000 (182.58)Gal: 83 gallonSKU: 58180 -
ODOT125NOptiTHERM 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 certifiedView ProductModel: ODOT125NBTU: 125,000 (36.63)Gal: 99 gallonSKU: 55912 -
OT300N2OptiTherm modulating condensing high effeciency commercial water heater. 119 gallons. 300,000 BTU/hr. Natural Gas. NSF/ANSI Certified. UL ListedView ProductModel: OT300N2BTU: 300,000 (87.92)Gal: 119 gallonSKU: 55667-2 -
OT400N2OptiTherm modulating condensing high effeciency commercial water heater. 119 gallons. 400,000 BTU/hr. Natural Gas. NSF/ANSI Certified. UL ListedView ProductModel: OT400N2BTU: 400,000 (117.23)Gal: 119 gallonSKU: 55670-2 -
OT500N2OptiTherm modulating condensing high effeciency commercial water heater. 119 gallons. 500,000 BTU/hr. Natural Gas. NSF/ANSI Certified. UL ListedView ProductModel: OT500N2BTU: 500,000 (146.50)Gal: 119 gallonSKU: 55672-2 -
OT300N2-H28OptiTherm modulating condensing high effeciency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 119 gallons. 300,000 BTU/hr. Natural Gas. NSF/ANSI Certified. UL ListedView ProductModel: OT300N2-H28BTU: 300,000 (87.92)Gal: 119 gallonSKU: 55682-2 -
OT400N2-H28OptiTherm modulating condensing high effeciency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 119 gallons. 400,000 BTU/hr. Natural Gas. NSF/ANSI Certified. UL ListedView ProductModel: OT400N2-H28BTU: 400,000 (117.23)Gal: 119 gallonSKU: 55685-2 -
OT500N2-H28OptiTherm modulating condensing high effeciency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 119 gallons. 500,000 BTU/hr. Natural Gas. NSF/ANSI Certified. UL ListedView ProductModel: OT500N2-H28BTU: 500,000 (146.50)Gal: 119 gallonSKU: 55687-2 -
OT300N2-AOptiTherm modulating condensing high effeciency commercial water heater. 125 gallons. 300,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT300N2-ABTU: 300,000 (87.92)Gal: 125 gallonSKU: 55660-2