Hot Water Generators

Now you can have instant hot water from your cold water washer anytime you want it!

Simply attach a "Hot Box" Hot Water Generator to your cold water pressure washer for instant hot water. Easily disconnected if you wish to go back to cold water cleaning. Available in sizes from 240,000 to 1,040,000 BTU's. Units will develop at least 120° F. temperature rise above incoming water temperatures at the maximum flow rates shown. (Lower flow rates will increase output water temperatures accordingly).

Standard Features:

  • Automatic burner shutdown
  • Adjustable thermostat control
  • Schedule 80 Pipe
  • Flow switch
  • Kerosene, Diesel, Natural or LP Gas Fired
  • 110-Volt, 12-Volt or Millivolt burners (Millivolt system creates its own electricity from thermocouple and pilot)

  • Quick Couplers
  • Heavy gauge construction
  • Pressure Relief Valve
  • Fuel Tank on Oil-Fired Units
  • On-Off switch
  • 5 Year prorated coil
  • Optional draft diverters



*Specify Natural Gas or LP Gas on these units.
GPM=Maximum Gallons Per Minute with 120 Deg. Temperature Rise.
Part No.DescriptionPrice
Picture of Hot Water Generator: 240,000 BTU, 2.2 GPM, 4000 Max PSI, Oil Fuel, 110-Volt
SKU: DU240Description: Hot Water Generator: 240,000 BTU, 2.2 GPM, 4000 Max PSI, Oil Fuel, 110-Volt Price: CALL FOR PRICE
Picture of Hot Water Generator: 430,000 BTU, 4.0 GPM, 4000 Max PSI, Oil Fuel, 110-Volt
SKU: DU430Description: Hot Water Generator: 430,000 BTU, 4.0 GPM, 4000 Max PSI, Oil Fuel, 110-Volt Price: CALL FOR PRICE
Picture of Hot Water Generator: 560,000 BTU, 5.0 GPM, 4000 Max PSI, Oil Fuel, 110-Volt
SKU: DU560Description: Hot Water Generator: 560,000 BTU, 5.0 GPM, 4000 Max PSI, Oil Fuel, 110-Volt Price: CALL FOR PRICE
Picture of Hot Water Generator: 1,010,000 BTU, 10.0 GPM, 4000 Max PSI, Oil Fuel, 110-Volt
SKU: DU1010Description: Hot Water Generator: 1,010,000 BTU, 10.0 GPM, 4000 Max PSI, Oil Fuel, 110-Volt Price: CALL FOR PRICE
Picture of Hot Water Generator: 240,000 BTU, 2.2 GPM, 3500 Max PSI, * Nat/LP Fuel, Milli-Volt
SKU: DU240GDescription: Hot Water Generator: 240,000 BTU, 2.2 GPM, 3500 Max PSI, * Nat/LP Fuel, Milli-Volt Price: CALL FOR PRICE
Picture of Hot Water Generator: 375,000 BTU, 4.0 GPM, 3500 Max PSI, * Nat/LP Fuel, Milli-Volt
SKU: DU375GDescription: Hot Water Generator: 375,000 BTU, 4.0 GPM, 3500 Max PSI, * Nat/LP Fuel, Milli-Volt Price: CALL FOR PRICE
Picture of Hot Water Generator: 500,000 BTU, 5.0 GPM, 3500 Max PSI, * Nat/LP Fuel, Milli-Volt
SKU: DU500GDescription: Hot Water Generator: 500,000 BTU, 5.0 GPM, 3500 Max PSI, * Nat/LP Fuel, Milli-Volt Price: CALL FOR PRICE
Picture of Hot Water Generator: 1,040,000 BTU, 10.0 GPM, 3500 Max PSI, * Nat/LP Fuel, Milli-Volt
SKU: DU1040GDescription: Hot Water Generator: 1,040,000 BTU, 10.0 GPM, 3500 Max PSI, * Nat/LP Fuel, Milli-Volt Price: CALL FOR PRICE
Picture of 12-Volt Burner in place of 110 volt up to 360,000 BTU
SKU: DU12VBDescription: 12-Volt Burner in place of 110 volt up to 360,000 BTU Price: CALL FOR PRICE
Picture of 12 Volt Burner in place of 110 volt up to 560,000 BTU & Larger
SKU: DU12VB1Description: 12 Volt Burner in place of 110 volt up to 560,000 BTU & Larger Price: CALL FOR PRICE