Fantech dbf4xl Dryer Booster Fan 4 Inch 115V

Product Description

The FANTECH dbf4xl is a metal dryer booster fan engineered to increase airflow through 4-inch dryer duct runs where static pressure losses reduce drying performance. It draws 0.73 amps at 115 volts, spins at 2800 RPM, and consumes a maximum of 83 watts. A built-in pressure-sensing switch activates the fan automatically when positive pressure is detected in the duct line, then shuts the unit off once duct pressure returns to normal. A 5-foot power cord is included. Licensed HVAC technicians and dryer vent specialists are the primary installers of this unit in both residential and light commercial applications.

The dbf4xl is suited for installations where dryer exhaust duct runs exceed recommended lengths or include multiple elbows that reduce airflow velocity. It is installed inline within the dryer duct to restore adequate exhaust capacity, helping reduce drying cycle times and lint accumulation in long runs. The metal housing is appropriate for dryer exhaust applications where local codes require noncombustible duct materials.

Key Features

• Pressure-sensing switch activates fan on positive duct pressure and shuts off automatically when pressure normalizes
• Operates at 2800 RPM for sustained airflow boost through extended duct runs
• Metal construction suitable for dryer exhaust duct applications requiring noncombustible materials
• Includes a 5-foot power cord for straightforward electrical connection
• Low current draw at 0.73 amps keeps operating costs minimal
• 5-year warranty provides long-term serviceability assurance

Compatibility

Designed as an OEM-style inline booster for 4-inch residential and light commercial dryer exhaust duct systems.

Installation Notes

Installation of dryer booster fans is typically performed by a licensed HVAC technician or dryer vent specialist. Always disconnect power to the dryer and the booster fan circuit before beginning any work. The unit must be installed in accordance with local mechanical codes and the dryer manufacturer's venting requirements. Do not install on duct runs that carry anything other than dryer exhaust.