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.

Shop By

Items 55-63 of 112

per page
Set Descending Direction

Items 55-63 of 112

per page
Set Descending Direction
  1. 66W-370SDLN-NA-A
    ASME CONSTRUCTED, NATURAL GAS LO-NOX BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 66W-370SDLN-NA-A
    BTU: 370,000 (108.44)
    Gal: 65 gallon
    SKU: 55371
    View Product
  2. 66W-399SDLN-NA-A
    ASME CONSTRUCTED, NATURAL GAS LO-NOX BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 66W-399SDLN-NA-A
    BTU: 399,999 (117.23)
    Gal: 65 gallon
    SKU: 55374
    View Product
  3. 80W-250SDLN-XA-A
    ASME CONSTRUCTED, L.P. GAS LO-NOX BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 80W-250SDLN-XA-A
    BTU: 250,000 (73.26)
    Gal: 80 gallon
    SKU: 55354
    View Product
  4. 100W-250SDLN-XA-A
    ASME CONSTRUCTED, L.P. GAS LO-NOX BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 100W-250SDLN-XA-A
    BTU: 250,000 (73.26)
    Gal: 100 gallon
    SKU: 55358
    View Product
  5. 75W-300SDLN-XA-A
    ASME CONSTRUCTED, L.P. GAS LO-NOX BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 75W-300SDLN-XA-A
    BTU: 300,000 (87.92)
    Gal: 75 gallon
    SKU: 55364
    View Product
  6. 66W-370SDLN-XA-A
    ASME CONSTRUCTED, L.P. GAS LO-NOX BURNER WITH SPARK DAMPER ENERGY SAVER ATMOSPHERIC WATER HEATER
    Model: 66W-370SDLN-XA-A
    BTU: 370,000 (108.44)
    Gal: 65 gallon
    SKU: 55372
    View Product
  7. 150G-600
    ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNER
    Model: 150G-600
    BTU: 600,000 (175.84)
    Gal: 160 gallon
    SKU: 56733
    View Product
  8. 200G-450

    ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNER

    Model: 200G-450
    BTU: 450,000 (131.88)
    Gal: 192 gallon
    SKU: 56656
    View Product
  9. 200G-650
    ASME CONSTRUCTED MULTI-FLUE INDUSTRIAL WATER HEATER WITH POWER GAS BURNER
    Model: 200G-650
    BTU: 650,000 (190.50)
    Gal: 192 gallon
    SKU: 56636
    View Product