Flameless hot air dryers are designed primarily for heat shrinkage or drying equipment and supplies. Switches easily control the power, hot and cold airflow, speed, and air volume. The efficient fans cool motors during operation to prevent overheating. An adjustable air-intake shutter gives the exact degree of heat desired. Hot air dryers may also feature aluminium housing, comfortable contoured handles for easy handheld operation, and grounded wire cords.