Uses Propane and is perfect for workshops, greenhouses, farms, warehouses, and events. ***Two 25' ducts included***.
***100% clean heat, flame never touches heated air. ***
Indirect heaters work the same as a home furnace using a heat exchanger to heat the air.
For Maximum heat and efficeincy, use two ducts, one to deliver hot air and one to return air from the heated space to the heater.
Heating heated air instead of drawing in cold air from the outside greatly increases effectiveness all without fumes or smell.