Heavy Duty Thermofogger Model 3901

Heavy Duty Thermofogger

192,000 Cubic Feet of Fog Per Minute (5436 Cubic Meters)

The Model 3901 is especially suited for large parks, factories, golf courses and municipalities with mosquito abatement programs.

This unit comes equipped with hoses and fitting for attachment to bulk containers. Also standard equipment, are manual remote controls to allow starting and stopping of fog from the cab of a vehicle.

Its two-stage heating system prevents the degradation of heat sensitive insecticides while creating a fine, billowy fog. The oil based insecticides are converted into approximately 192,000 cubic feet of fog per minute (5436 cubic meters).


  • Easy start, low maintenance Briggs & Stratton engine
  • Adjustable output and micron size
  • Remote truck cab control included
  • Flameless
  • One year limited warranty
  • Formulation Filter – cleanable
  • One man operation
Specifications – Thermofogger Model 3901
Engine Briggs & Stratton Heavy duty, 4-cycle
Horsepower 13 h.p.
Fuel Lead-free gasoline
Type Unit Thermal Fogger: using oil-based insecticides
Heating Principle Two-stage Turbo Fogger
First Stage: “Friction-disc” that pre-heats oil based insecticide
Second Stage: exposure to hot exhaust air blast
Formulation Output Controllable: 0-25 gallons per hour
(Dry fog, 16 gallons per hour)
Filter Cleanable/Replaceable
Fog Particle Size Controllable: 0-50 microns
Flameless low temperature
Fuel Tank Capacity 1 ½ gallon
Formulation Tank Capacity External Bulk Container (User Supplied)
Engine Running Time 1 ¼ hours
Starter Manual
Weight 180 pounds
Shipping Weight Approximately 201 pounds
Shipping Dimensions (L)44″ (H)31″ (W)24″ (Cu. Ft.)18.9′

View Or Download Spec Sheet – Click To View – Or – Right Click & Select “Save As” To Download