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Fantech DBF4XL - Metal Dryer Booster

Fantech DBF4XL - Metal Dryer Booster

Fantech DBF4XL - Metal Dryer Booster

Availability: In stock


Quick Overview

Tap into the power of this dryer booster fan which can be used on duct runs up to 130 feet.


Fantech DBF4XL - Fantech's Metal Dryer Booster System. The Fantech DBF4XL - Fantech's Metal Dryer Booster is the newest dryer booster fan and it is the most advanced in the industry!

The DBF4XL can be used to effectively boost dryer exhaust in duct runs up to 130 feet.

This fan has a galvanized steel housing and integrated airflow sensing switch.

Fantech dryer booster fans are designed to eliminate the problems that can be caused by long duct work from your clothes dryer. Long stretches of duct work with multiple elbows can cause extended drying time as well as lint and moisture build-up within the dryer duct.

Originally dryers were designed to be located on an outer wall able to vented directly outside. Newer homes and condo are being designed so that the laundry is located on interior walls making it necessary to have extensive lengths of duct work to ventilate the dryer outside.

You will need a DBF4XL Fantech Dryer Booster System when the length of your dryer duct work exceeds:

-25 feet with no bends

-20 feet with one bend

-15 feet with two bends

-10 feet with three bends



•Dryer booster fan shall be capable of maintaining an air velocity of 1200 fpm with an equivalent duct length of 130 feet of 4 inch rigid steel duct.

• The dryer booster fan shall be capable of exhausting air up to 75°C

• Unit shall have a five year warranty.

• Motor shall be a permanently lubricated, enclosed, external rotor design.

• The blower wheel shall be a self cleaning backward curved impeller design.

• The dryer booster fan shall have a galvanized steel housing with powder coat finish.

• A 50 foot cable shall be provided to connect the remote mount indicator panel to the dryer booster fan.

• Unit shall be provided with a 5-1/2 foot long 120 Vac power cord.

• Dryer booster fan is to be provided with inlet and outlet flanges for connection to 4” duct.

• Quick disconnect duct clamp to be provided. • Galvanized mounting bracket and hardware are to be provided.

• Unit shall be provided with 18” of pressure sensing tubing with mounting grommet.

• Air delivery shall be as shown below.


Extended Information:

FAN – Inline fan with galvanized steel housing and baked powder- coat finish. Backward inclined blades of the motorized impeller allow lint to pass through the fan.

PRESSURE SWITCH- Fantech’s patented pressure switch automatically activates the booster fan when dryer comes on. Includes 18” of pre s s u re sensing tubing with mounting grommet.

INDICATOR PANEL- Wall-mount, low voltage indicator panel features an LED light that indicates to the homeowner that the fan is working properly. The indicator panel will alert homeowners of problems such as no power, blocked duct, locked motor rotor and low speed conditions. A 50 foot cable is included to connect the indicator panel to the booster fan.

Additional Information

Model NumberVT-FT-DBF4XL

Technical Specs

  • - For maximum sensitivity, switch diaphragm must be mounted vertically.
  • - Fan must be mounted a minimum of 15 linear feet from the dryer in order to prevent the impeller from loading with we lint.
  • - Fan should be inspected periodically, depending on amount of usage and cleaned as necessary.
  • - Fan inlet and outlet are 3 7/8" diameter allowing direct installation into dryer vent duct.
  • - Motor bearings are a permanently sealed, self lubrication ball type.
  • - DBF4XLT fan is backed by Fantech's Five Year Warranty