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.

Items 1-9 of 48

Page
per page
Set Descending Direction

Items 1-9 of 48

Page
per page
Set Descending Direction
Shop By
  1. OT199N
    OptiTHERM modulating, condensing high-efficiency commercial water heater • 99 gallon • 199,000 BTU/hr • Natural Gas • NSF/ANSI certified • CUL listed
    Model: OT199N
    SKU: 55805
    View Product
  2. 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
    View Product
  3. 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
    View Product
  4. OT200N
    OptiTHERM modulating, condensing high-efficiency commercial water heater • 100 gallon • 199,999 BTU/hr • Natural Gas • NSF/ANSI certified • CUL listed
    Model: OT200N
    SKU: 55742
    View Product
  5. OT250N
    OptiTHERM modulating, condensing high-efficiency commercial water heater • 100 gallon • 250,000 BTU/hr • Natural Gas • NSF/ANSI certified • CUL listed
    Model: OT250N
    SKU: 55745
    View Product
  6. OT299N
    OptiTHERM modulating, condensing high-efficiency commercial water heater • 100 gallon • 299,999 BTU/hr • Natural Gas • NSF/ANSI certified • CUL listed
    Model: OT299N
    SKU: 55747
    View Product
  7. 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
    View Product
  8. 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
    View Product
  9. OT199LP
    OptiTHERM modulating, condensing high-efficiency commercial water heater • 99 gallon • 199,000 BTU/hr • LP Gas • NSF/ANSI certified • CUL listed
    Model: OT199LP
    SKU: 55815
    View Product