Fantech

Fantech DBF Series Dryer Booster Fans

Dryer boosting kits and lint traps. Typical residential dryers are rated at 160 cfm. However, boosting is generally needed in order to maintain a minimum airflow of 100cfm as duct length increases and bends are introduced in the duct line. Fantech models DBF 110, DBF 4XL, DBF 4XLT and RVF 4XL-DB10 are all suitable for most dryer boosting applications. Generally the models listed can be used for maximum duct length of 60 linear feet with a maximum of six elbows using four inch rigid duct.

The booster switch monitors dryer operation and will activate the fan when the dryer comes on. Preset to cycle in ten minute intervals the fan will stay on until the dryer stops.

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model description usually ships price QTY
DBF 110 Fantech Dryer booster kit with FR 110 fan (PLASTIC casing) and DB10 pressure switch. 1 Day. In-stock $176.20
DBF 4XL Fantech Dryer booster kit with FG 4XL fan (METAL casing), DB10 pressure switch and plug-in power cord for easy installation. 1 Day. In-stock $176.20
DBF 4XLT Fantech Dryer booster kit with FG 4XL fan, integrated pressure switch, and wall indicator panel. 1 Day. In-stock $224.10
DBF 4XLT-705 Fantech dryer booster kit with FG 4XL fan, integrated pressure switch, wall indicator panel, 4 duct clamps, tubing, and 2 ducts for cleanout access. UL705 listed. 1 Day. In Stock $309.00
DBLT 4W Fantech lint trap for 4" round duct. Used when installing a booster fan less then 15 feet from the back of the dryer. 1 Day. In-stock $35.60
RVF4XL-DB10 Fantech wall mounted exterior centrifugal fan and switch kit combo. 4" round duct fan - RVF 4XL. 10 minute off delay pressure switch - DB10. 115 VAC. 1 Day. In-stock $219.00
DB 10 Fantech Switch Kit Only. With 10 Minute off delay relay. Suitable for 115V. 2 Amp Rating. Fan Not Included. 1 Day. In-stock $63.10
450237 Fantech Lint Trap Replacement Screen for DBLT4 Traps. **Not compatible with DBLT 4W** 1 Day. In-stock $14.75
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Do you have questions about the products on this page?

Click on the ? image on the left or this link to ask us your questions!
#1 Q:   Does the DBL4XL I just purchased come with the mounting bracket?
A:   Indeed it does...

       Asked on 2014-07-01 by Randy B
#2 Q:   Do you carry a dryer exhaust fan for a outside wall mount?
A:   Yes, the RVF4XL/DB10 combo works well in that instance.

       Asked on 2014-06-07 by earl
#3 Q:   How close can these be mounted to the dryer?
A:   They need to be 15 feet away if you can, or as close as 5 feet with a lint trap installed.

       Asked on 2014-05-12 by Rob
#4 Q:   If you have to clean our the fan, do you have to remove the whole unit?
A:   Yes, the fan must be removed to gain access to the interior of the unit.

       Asked on 2013-04-04 by Rick
#5 Q:   Can these be mounted on a vertical duct only?
A:   They can be mounted in any position so long as the pressure switch is in the correct orientation. Check the manual for current recommendations.

       Asked on 2013-04-04 by George
#6 Q:   How do I know if I need the lint trap with the DBF110?
A:   Fantech recommends the use of a lint trap if the fan will be closer than 15 feet from the dryer. At that point the lint should be dry enough to pass through the fan.

       Asked on 2013-04-04 by JC
#7 Q:   Whats better, the metal or plastic casing boosters?
A:   The metal case has a better seal, but the integrated nature of the plastic one makes installation a snap. An argument could be made for either.

       Asked on 2013-04-04 by Confused

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