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.MIDCONON-ASME POWER GAS WATER HEATER WITH MIDCO RE47008A GAS BURNERView ProductModel: 541PG-Nat.MIDCOBTU: 623,000 (182.58)Gal: 83 gallonSKU: 58165 -
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
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OT600N-AOptiTHERM modulating condensing high efficiency commercial water heater. 130 Gallons. 600,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT600N-AGal: 130 gallonSKU: 55940 -
OT700N-AOptiTHERM modulating condensing high efficiency commercial water heater. 130 Gallons. 700,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT700N-AGal: 130 gallonSKU: 55942 -
OT800N-AOptiTHERM modulating condensing high efficiency commercial water heater. 130 Gallons. 800,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT800N-AGal: 130 gallonSKU: 55944 -
OT900N-AOptiTHERM modulating condensing high efficiency commercial water heater. 130 Gallons. 900,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT900N-AGal: 130 gallonSKU: 55946 -
OT600N-A-H28OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 600,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT600N-A-H28Gal: 130 gallonSKU: 55956 -
OT700N-A-H28OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 700,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT700N-A-H28Gal: 130 gallonSKU: 55958 -
OT800N-A-H28OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 800,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL ListedView ProductModel: OT800N-A-H28Gal: 130 gallonSKU: 55960