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Product Information

The HI 770XHD models are very heavy duty, highly reliable, indirect fired air heaters, designed to run 24/7, in extreme environments. These units can withstand blizzard and ice storm conditions with up to 70 mph winds and will operate in temperatures to -60°F. Gone are the days of makeshift containment systems with the environmentally friendly Triple Threat™ spill containment feature which ensures that no diesel fuel, engine oil or engine coolant will contaminate the site.

Technical Data   HI 770 XHD HI 770 XHD NS
Dimensions (L x W x H)  in (mm) 187 x 94 x 88 (4750 x 2388 x 2235) 21.5 x 103.5 x 88 (5473.7 x 2628.9 x 2235)
Weight (without fuel) lbs (kg) 5,700 (2585)  5,783 (2523)
Weight (with full fuel tank) lbs (kg) 7,543 (3421) 7,586 (3441) 
Genset kW 8 10
Genset fuel tank capacity gal (l) –  29 (110)
Tire Size LT235/85R16 (G) LT235/85R16 (G)
Hitch Fixed Pintle Adjustable Pintle
Fuel Requirement Diesel Diesel
Heater, Input Btu/h (kW) Up to 770,000 (220) Up to 770,000 (220)
Heater, Output Btu/h(kW) Up to 577,500 (169) Up to 577,500 (169)
Heater Efficiency HHV/LHV* % 75/80.3 75/80.3
Fuel Consumption (average) gph (l/h) 3.55 – 6.0 (13.44 – 22.71) 3.55 – 6.0 (13.44 – 22.71)
Fuel Tank Capactity gal (l) 256 (969) 225 (852)
Run Time h 45 – 75 45 – 75
Electrical Requirement Generator 208V, 30A Generator 208V, 30A
Quick Change Oil Fittings No Yes, Wiggin fittings
Lifting Crane Eyes Yes, 4 Yes, 4
Fork Lift Pockets Yes Yes
Performance Monitoring Light Yes Yes
DOT Compliant Yes No
Type 3 hp centrifugal 3 hp centrifugal
Volume cfm 4,000 4,000
Static Pressure in. water column 4.0 4.0
*HHV = High Heat Value, US Standard / LHV = Low Heat Value, European Standard

  • A Wacker Neuson Product
  • The DURA-GEN extended run technology offered on the HI 770XHD model, minimizes oil changes to every 3000 hours (125 days).
  • Control panel features digital display of supply air temperature, along with temperature controls for supply air.
  • The durable heat exchange and fire box are made from 100% high grade stainless steel for long life and carry a 5-year rust through/burn through warranty.
  • Large heavy duty fork lift pockets make this machine easy to load and unload for greater job site mobility.
  • Conveniently located side access door provides superior performance in windy conditions and is lockable for added security.
  • Unique Recircul-Air™ design allows adjustable recirculation of warm inside air, resulting in huge fuel savings and even temperatures.
  • Optional remote thermostat available for controlling temperature from the inside of a structure.
  • North Slope (NS) model features include a heavy duty rack for duct storage, adjustable pintle hitch with surge brakes, 10 kW genset (vs 8 kW on XHD model), recessed fuel fill on both heater and genset and (2) 20 Amp, 208V twist lock curbside convenience plugs.
  • Machines are CSA Certified


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