38M BTU Frac Water Heater Unit


OnSite Oilfield Services has three of these top of the line fluid heater unit, that are unique around the area. Being one of the biggest heaters on the market today, heating jobs are always efficient and fast with these units. 


Heater on a Job Site 


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  • Diesel fired, dual burner, trailer mounted self contained system


  • Dual burner package, NFPA combustion system 
  • 19 million BTU per hour per burner
  • Pressurized fuel and pressurized air systems for fuel atomization 
  • Blower system for positive combustion air
  • LP fired pilot with spark ignition
  • Digital burner controls with programmable water temperature and burner fire rates
  • Safety shutdowns

Heat Exchanger:

  • 2" – SA106 GR B, SCH 40 pipe
  • Multi core, multi pass, low pressure design
  • Inlet and outlet manifolds within burner chamber -6x5 Hydraulic drive centrifugal water charge pump
  • Multiple 4" suction and discharge connections at rear of trailer

Burner Chamber:

  • 1/4" Steel plate construction
  • Removable top with air operated hinged covers
  • 3" Ceramic fiber insulation rated at 2300 deg on all surfaces including top

Fuel tank:

  • 2700 Gal aluminum fuel tank
  • Top fill and lower pressure fill connections
  • Top manway, pressure relief valve, level gauge
  • Air operated vent valve 
  • Air operated fuel supply valve to burner
  • Manual fuel supply valve to deck engine 
  • Heated and insulated tank bottom shell


  • Caterpillar C9 engine with jacket water heater and aluminum enclosure

Hydraulic System:

  • 300 Gal hydraulic tank
  • 4 Pump system with 2 oil coolers, valves and controls
  • System operates, water charge pump, combustion blower, fuel pump, air compressor

Air Compressor:

  • Rotary screw air compressor system with reservoir 
    tanks, moisture separator, and aluminum enclosure


  • High strength drop deck frame 
  • 3 Axle with air ride suspension, lift on rear axle
  • ABS brake system, LED lights


Water flow:

  • 850 GPM @ 50 PSI inlet pressure (nom)
  • 550 GPM @ 30 PSI inlet pressure (nom)
  • 400 GPM @ 20 PSI inlet pressure (nom)

Temperature Rise:

  • 70 Deg F @ 850 GPM (nom)
  • 100 Deg @ 500 GPM (nom) 

Fuel rate:

  • 4.3 GPM, 258 GPH @ full fire (nom)


  • 45' Long, 8'-6" Wide, 13' High, 
  • 66,000 lbs (nom, dry heat exchanger)