Model # DRY04

Internet #203151203

Store SKU #981769

Suncourt 4 in. Dryer Booster Kit


4 in. Dryer Booster Kit

  • Included current switch reliably turns fan on/off with dryer
  • For installations between 25 and 140 equivalent feet
  • For use with electric dryers
$13309 /each
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Frequently Bought Together

Product Overview

Suncourt's Dryer Boosting Kits are ideal for solving residential, commercial and industrial dryer vent problems where more airflow is needed. Most dryers are designed to vent about 15 ft. of duct. They supplement the fan in your dryer to enhance its efficiency. Their in-line construction allows for easy installation as well as reduced clogging. They have a high temperature rating up to 140 Degree F/60 Degree C. The fan has thermal overload protection and features an automatic reset. The Suncourt Dryer Boosting Kits come with an accurate, reliable current sensing switch that turns the fan on and off when it senses current from the dryer. Stack effect, wind and installation can interfere with the operation of pressure switches by starting the fan unnecessarily or simply not turning the fan on when required.

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Appliance Type
Brand Compatibility
Compatible Appliance Type
Electric Dryer
Hardware Included
Part Type
Fan Motor

Warranty / Certifications

Manufacturer Warranty

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Customer Questions & Answers

can I used this dryer booster with a gas dryer?

everything I have read specifically mentions electric dryers but never gas
Asked by: Allwayslearning
I beleive the Suncourt rep's answer of "no", but would like to know why not. Another fan makers rep, on this portal, claims their is no difference between gas and elec.- but the switch for that fan is a pressure sensor switch not an electrical sensor switch.
Answered by: Craig
Date published: 2016-11-26

Can this be used with a gas dryer?

Asked by: JP
Absolutely no! Electrically it may work, but on suncourt's website it clearly states that the DRY04 is not approved for gas dryers. This is important because if your ignighter fails, which mine has before, you will be sending unburnt natural gas through your dryer vent. If the fan motor is not rated for gas service it could spark and ignighte it. Combine that with the spinning fan and you could be shooting flames out your dryer vent that could set your grass on fire. There are dryer boosters out there that are rated for gas dryers. The motor is usually outside the vent pipe. They also typically have a temperature sensor that won't allow the unit to start until there is hot air blowing past the booster. Check the manufacturers website to make sure the booster is rated for gas dryers before purchasing.
Answered by: JTO
Date published: 2016-09-24

How does the booster fan "sense" current to the dryer?

My dryer is on the ground floor of the house and I want to install the booster fan in the vent line in the attic. How do I get the booster fan to "sense" current to the dryer? Do I have to run wiring between the dryer and the booster fan?
Asked by: munreaux
A current sensing device needs to be installed in the power feed line to the dryer. The device is provided but must be mounted in an electrical box. This device itself operates as a switch in a line providing 120VAC power to the blower.
Answered by: Terry
Date published: 2017-01-05

Can lint jam up the Booster? Does it have a fire potential?

Asked by: JT
Hello, In extreme cases the fan can become clogged with lint. For most homeowners the fan would not clog though. We do recommend installing a secondary lint trap between the electric dryer and the booster fan if the installed distance is less than 15 feet. That will catch most of the lint that gets past the dryer's lint trap. Install the lint trap somewhere with easy access. We also recommend inspecting the fan once a quarter and cleaning out the fan if applicable. The fan has a thermal fuse inside the motor windings. If the fan motor overheats the fuse will open and kill the fan. The fuse would reset but if the issue persists eventually the fuse would fail completely. Thanks, Suncourt
Answered by: Suncourt Product Expert
Date published: 2017-04-18
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Customer Reviews

4 in. Dryer Booster Kit is rated 4.3 out of 5 by 27.
Rated 3 out of 5 by from The fan works great and shortens drying times. However, I couldn't get the automatic switch to w... The fan works great and shortens drying times. However, I couldn't get the automatic switch to work when the dryer was turned on, so ended up installing a separate switch for the fan at the dryer. The fan is quiet and moves a lot of air. It is so powerful that it blew accumulated lint out of the duct.
Date published: 2017-04-18
Rated 3 out of 5 by from The blower worked fine but after having to order two... The blower worked fine but after having to order two different units and higher an electrician because I thought I was doing something wrong. We ended up having to bypass the black box that is supposed to sense electrical current and automatically turn unit on and of with dryer. both black box's did not work. ended up put in a box with a timer switch that has to be turned on manually. Otherwise the motor itself works fine.
Date published: 2017-08-02
Rated 5 out of 5 by from 50ft with 2 90 degree bends! I read a review that theirs didn't turn on half the time. Make sure that the wire that goes thru the included current sensing switch (should be the neutral wire) loops around and goes through the hole twice. Or try replacing the current sensing switch all together.
Date published: 2017-07-04
Rated 4 out of 5 by from The blower was easy to install but the CT switch... The blower was easy to install but the CT switch was bigger than I thought. Had to put it in a 4" square box and it was tight. The wiring in the unit is really small compared to # 12 or # 14 wire are was hard to terminate in the unit.
Date published: 2017-05-05
Rated 5 out of 5 by from This was my first dryer vent booster installation. After figuring... This was my first dryer vent booster installation. After figuring it all out things went well. I would use this product again.
Date published: 2017-05-16
Rated 5 out of 5 by from Powerful Much quieter than I thought it would be. I have it blowing my dryer exhaust 35 feet and it works great.
Date published: 2017-06-26
Rated 4 out of 5 by from Haven't been able to install it yet. But it looks... Haven't been able to install it yet. But it looks very straightforward.
Date published: 2017-03-08
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-04-04
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