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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150G-400ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNERView ProductModel: 150G-400BTU: 400,000 (117.23)Gal: 160 gallonSKU: 56701 -
150G-600ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNERView ProductModel: 150G-600BTU: 600,000 (175.84)Gal: 160 gallonSKU: 56733 -
200G-450ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNER
View ProductModel: 200G-450BTU: 450,000 (131.88)Gal: 192 gallonSKU: 56656 -
200G-650ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNERView ProductModel: 200G-650BTU: 650,000 (190.50)Gal: 192 gallonSKU: 56636 -
200G-850ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNERView ProductModel: 200G-850BTU: 850,000 (249.11)Gal: 192 gallonSKU: 56670 -
200G-1150ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNERView ProductModel: 200G-1150BTU: 1,150,000 (337.03)Gal: 192 gallonSKU: 56596 -
250G-800ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNERView ProductModel: 250G-800BTU: 800,000 (234.46)Gal: 242 gallonSKU: 56576 -
250G-1000ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNERView ProductModel: 250G-1000BTU: 1,000,000 (293.07)Gal: 242 gallonSKU: 56556 -
250G-1250ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNERView ProductModel: 250G-1250BTU: 1,250,000 (366.34)Gal: 242 gallonSKU: 56536 -
250G-1500ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNERView ProductModel: 250G-1500BTU: 1,500,000 (439.61)Gal: 242 gallonSKU: 56516 -
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 -
OT400N2-AOptiTherm modulating condensing high effeciency commercial water heater. 125 gallons. 400,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT400N2-ABTU: 400,000 (117.23)Gal: 125 gallonSKU: 55662-2 -
OT500N2-AOptiTherm modulating condensing high effeciency commercial water heater. 125 gallons. 500,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT500N2-ABTU: 500,000 (146.50)Gal: 125 gallonSKU: 55665-2 -
OT300N2-A-H28OptiTherm modulating condensing high effeciency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 125 gallons. 300,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT300N2-A-H28BTU: 300,000 (87.92)Gal: 125 gallonSKU: 55675-2 -
OT400N2-A-H28OptiTherm modulating condensing high effeciency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 125 gallons. 400,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT400N2-A-H28BTU: 400,000 (117.23)Gal: 125 gallonSKU: 55677-2