Air heater makes use of forced transmission, convected heat, or resistive heating elements. The air is forced through a fan or a blower. The heat is convected from coils containing a heated circulated media. Some even have protective covering around the heating element. These heaters make ample use of energy sources such as electricity, fuel oil, diesel, gasoline, kerosene, natural gas, and propane.

Types
Electric air heaters are available in variety according to their usage. These are :

Buying Tips Selection of a electric air heater should be judged on the following specifications: Extreme air temperature Maximal air flow through the heater Heating capacity delivered by the heater Insulation material used

• Heat Torches
• Fixed Electric Fan Heater
• Gas Heater
• Duct Heater
• Strip Heater
• Enclosure Heater

Features
Characteristics of an air heaters are:

• Corrosion-resistant
• Explosion-proof
• Finned
• Microprocessor-controlled
• Portable
• Independent timing controls
• Encased coil
• Grounding wire

Applications
As per the demand, air heaters have their own set of areas where they are widely used.

• Packaging
• Automotive
• Plastics
• Rubber
• Textile
• Electronics
• Used for adhesives
• De-flash molded parts
• In the semiconductor industry, they are used for preheating gas procedure
• Soldering of lead frames
• Wafer
• PC board drying
• Wire insulation for heat shrinking