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Wacker Neuson HI900DGM Mobile Indirect Fired Air Heater

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Manufacturer: Wacker Neuson
SKU: WN-HI900DGM Categories: , Tags: , , ,


The Wacker Neuson HI 900DGM Mobile Indirect Fired Air Heaters has many variables/options (ie. trailer, 7kw generator, electric or surge brakes, etc).

 This model has been discontinued. Please contact us for a replacement model and if you are interested in Thawzall Units. 

The most versatile, robust indirect fired air heaters producing clean, moisture free air for various heating and drying applications. Easy set-up and simple operation make these units extremely user friendly. Boasting up to 878,000 Btu/hr. and up to 6,450 cubic feet per minute, the HI900DGM can operate on diesel, natural gas or propane for maximum job site convenience. These self-contained models feature an on-board 7 kW liquid-cooled generator. All models are CSA certified.

  • Indirect fired air heaters produce clean, dry, healthy heat offering an ideal environment for a variety of construction, residential and restoration applications without the use of an open flame, combustion carbons or water.
  • Industry leading for heat delivery in its class, boasting 900,000 Btu/hr and up to 6,450 cubic feet per minute, the HI 900DGM also features a static pressure gauge, helping maximize heat delivery and avoid output air restrictions.
  • The HI 900DGM features a liquid-cooled 7kW Kubota generator for off-grid use as well as a durable stainless steel heat exchanger that comes standard with a 3 year warranty.
  • The unique Recircul-Air design allows adjustable recirculation of warm inside air, while pressurizing with fresh air, resulting in fuel savings and even temperatures.
  • Trailers come fully equipped with choice of surge or electric brakes.

WN HI900 Brochure


L x W x H Overall197 x 61 x 100.5 in
L x W x H Shipping197 x 61 x 100.5 in
Weight without Fuel4,092 lb
Operating weight with Fuel4,925 lb

Operating data

Diameter Flue8 in
Diameter Air Outlets (qty 2)20 in
Diameter Air Outlets (qty 2)16 in
Diameter Air Outlets (qty 4)12 in
Diameter Air Inlet (qty 2)20 in
Heating power Heat Input878,000 BTU/h
Heat efficiency83 %
Operating temperature Air Temperature Rise108 ° F
Capacity Sizing Air Heat1,214,500 ft³
Capacity Drying Size432,230 ft³
Fuel consumption Burner6.1 US gal/h
Operating performance Burner0.25 hp
at rpm Burner3,450 rpm
Tank capacity Burner Fuel103 US gal
Runtime Burner (100%)16.9 h
Runtime Burner (75%)22.5 h
Engine / Motor type BlowerCentrifugal
Power Blower5 hp
RPM / speed Blower3,450 rpm
Air flow6,447 CFM
Static Pressure W.C.2 W.C. (inch)
Length 2 x 20in Supply ft200 ft
Length 2 x 16in Supply ft100 ft
Length 4 x 12in Supply ft100 ft
Length 2 x 20in Return ft50 ft

Electrical system

Engine / Motor type GeneratorSawafuji
Engine performance Generator9.4 kW
RPM / speed Generator3,600 rpm
Frequency Generator60 Hz
Voltage Generator120 V
Current Service27.1 A
Current Max.54.2 A
Receptacles 20 Amp5-20R
Receptacles 30 Amp2 x L5 , 1 x L6

Engine / Motor

Engine / Motor typeZ482
Engine / Motor ManufacturerKubota
Engine performance Engine @ 1800 rpm10.9 hp
Displacement29.2 in³
at rpm3,600 rpm
Fuel typeDiesel
Fuel consumption Useable Fuel0.69 US gal/h
Runtime w/Genset (100%)15.2 h