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MANUALS (3)
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Product Highlights
Description
This item is Not listed to the UL-705 DEDPV supplement approved to be used with Gas Supplied Driers.
DBF 110 is a duct booster fan designed for boosting air on demand. The product is equipped with a pressure-sensing switch that activates the fan once positive pressure is sensed in the duct line. The switch shuts the fan off when the pressure in the duct normalizes.
Features:
- Performance certified by HVI; safety certified by ETL to UL507.
- Plastic leak-proof housing
- Pressure-sensing switch.
- Suitable for 4" ductwork
Specs
| Product Type: | Dryer Booster Fan |
|---|---|
| Duct Size: | 4" |
| Max. Watts: | 80 |
| Max. Amps: | 0.72 |
| Warranty: | 5 Year |
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Product Reviews
Most Liked Positive Review
no more internal lint
Most Liked Negative Review
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Works great, install ease not-so-good.
Yes I love it
Huge improvement over previous fan
Definitely use your website again
Exactly as describes faster shipping than amazon
Whisper quiet
Quiet and Works Great!
I would buy again
Great product Easy Install
I hope I don't have to buy this product again.
I will buy this product again
Product Q&A
8 QuestionsQ: can this be wired with a male plug to plug into a receptacle?
Asked by lasportsman 8 years ago
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Verified Reply- DanIt's possible but it may not be advisable. If it is unplugged on accident it would cause issues.
Verified Reply- SupplyHouse StaffYes, the fan could.
Q: can this fan operate for 2 dryers
Asked by rich 11 years ago
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Verified Reply- Supplyhouse Staffdepends on the CFM requirement for each dryer
All I can tell you is that the fan is triggered by the dryer exhaust. It's not connected to the dryer in any way. So, if you can vent two dryers through a vent this size, the fan should work. You'll have to determine whether it will move enough exhaust far enough for your installation, based on the fan specs.
It will not work for two. The pressure sensor Would not activate properly. You could do it If you wired around the sensor switch and used It in manual mode. Not advised. Sent from my iPhone
Sure, as long as both dryers use the same exhaust tubing. The fan senses the flow of air from the dryer, no other switching is involved. If you mean with both dryers operating at the same time, then again yes, I believe it has the excess capacity to handle both dryers. I highly recommend this fan. I've been using it for over two years with exceptional results. Sent from my iPad
Q: Just install this fan. Runs all the time. Have to unplug it to turn it off. Can anyone help me?
Asked by Nana 12 years ago
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I am going to try to answer your question for you. This device worked perfectly for me.....and still does. There is a timer and a heat sensor inside of the device. When you first plug it in, it may cycle for five minutes, but then should shut off and not turn back on until it "senses" heat in the dryer exhaust. It then turns back on for five minutes, and cycles every five minutes, looking for heat. If yours stays on continuously, I can see three scenarios: 1. It is installed in a hot environment and the device cannot distinguish between ambient heat and heat from the dryer vent (2) The sensor/timer is disconnected or switched off (3) The sensor is defective. Sorry, but that's the best I can do. Mine works and works well. I have it installed about 25 feet from the dryer.
I'm not sure exactly what problems you're having. I've not had any problems with mine and it's been installed for over two years. The fan is controlled by an air pressure switch that's mounted on the outside of the fan housing. When the dryer starts, the switch senses the increase in air pressure through the dryer duct and starts the fan. After the dryer cycle ends and cuts off, the fan continues to run for a few minutes. You have to position the fan so that the switch is in the proper vertical position. The included installation instructions do not explain this very well. I had to read through them a few times to understand how to mount the fan so that the pressure switch will function correctly. If I remember correctly, the switch is set up for a vertical fan mounting. If you mount the fan in a horizontal position, you'll need to position the switch in the proper manner. Hope this helps
I was fortunate. I replaced an existing fan and it worked without a problem. However, it is extremely sensitive. I takes just a little exhaust from the dryer to start it up and it runs for at least 10 minutes after the dryer stops. First, it must be installed/mounted per instructions. There are a few options, but it has to be oriented correctly for the sensor to work. Then, there is an adjustment for the sensor - loosening the sensor and turning it changes how much exhaust it takes to start up. Turning the box one direction makes it easier to turn on, the other way makes it less sensitive. Since it takes 10 minutes or more to shut off, it's a challenge to adjust. You may need to hire someone with some experience. I'd start by turning it to an extreme - won't start up when the dryer starts (and it should start almost immediately). If you can't get to that point, it's mounted wrong or have a bad sensor. Then, gradually rotate the sensor so it starts when the dryer starts. Then, it should shut off after 10 minutes or so after the dryer stops. I know this isn't a lot of detail, but hope it helps. Mine has worked without a problem.
Q: According to the instruction manual, it is recommended that the unit be install 5' off the floor. Our dryer is in the basement and the vent pipe goes through a closed wall and ceiling and exits the house at floor level in the back of the house. It has about 20-30 ft of pipe with several 90 degree turns which is why I think I need the fan. There is a section of the exhaust pipe that can be exposed in the corner of our screen porch where the pipe exits the house and goes to the exterior of the porch to vent to the outside at floor level and that is where I would prefer to install the fan. It will be exterior to the house but inside the porch and can be protected from the elements. It would be a horizontal install in this location. Will this be an acceptable installation?
Asked by Lenny 12 years ago
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My unit is installed horizontally, sitting on the floor. Works just fine this way. It's not the length of the run so much as the 90 degree turns that affect the flow. The unit is pretty well sealed up. I would think the porch location would be OK. You may consider some kind of insulation wrap if your winter weather gets very cold. The unit turns itself on by detecting the presence of air flow in the pipe. The pressure at the porch location would have to be strong enough that far away to activate the unit. NOTE: after the dryer shuts off the unit turns itself on and off a couple of times before it decides to stay off.
My instructions say the fan should be installed at least 5 ft from the dryer, not 5 ft above the ground. My run is about 40 ft and I have it installed in the garage, about 20 ft from the dryer. Also, the instructions say "A secondary lint trap must be installed between the clothes dryer and the clothes dryer booster fan if the booster fan is located less than 15 linear feet (4.6 linear meters) from the exhaust of the clothes dryer." So, you probably want to install it more than 15 feet away from the dryer. Also, the less 90 degree turns you have the better. Finally, it is best to install it in a way that you can get to it, as you may have to clean it out from time to time. You installation should be OK if you follow those points.
The fan works extremely well given certain conditions. I don’ recall that you must mount the unit 5 feet off the floor. I have used the blower for 3 years. I have 3- 90 degree angles with a 40 foot run. More 90 degrees the less efficient the blower will become. Second, make sure the blower is placed in an area that is accessible. Every couple of years you will notice it will become noisy due to lint build up. You do not need to replace the blower, simply clean it out. I am not aware the blower can handle exterior mount application and it may be too far from your dryer. Call the manufacturers tech line and see if they will help you as well. When you talk with them given them: the total distance, number of 90’s, distance from the dryer where you would like to mount the blower, and note that it is to be placed in an exterior location.
Lenny - as far as I remember the unit needs to be installed vertically so the condensation will drain properly. You would otherwise run the risk of it building up in the unit and either corroding it or causing and electrical problem down the road.
I don't see a problem installing as noted.
Q: can this unit be mounted directly to the dryer
Asked by LJ 13 years ago
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No. It is designed to be installed in-line with the dryer exhaust tubing.
The instructions that come with this fan indicate that it should be mounted a minimum of five feet away from the dryer outlet.
The instructions that come with this fan indicate that it should be mounted a minimum of five feet away from the dryer outlet.
The instructions state that it must be at least 5 feet from the dryer. (I believe you can download a PDF of the manual from the PEX site. The manufacturer also recommends a lint trap when the fan is less than 15 feet from the dryer.
The instructions that come with this fan indicate that it should be mounted a minimum of five feet away from the dryer outlet.
No
No. It has to be at least five feet away for the dryer.
LJ, We didn’t mount it right to the dryer. Unless the exhaust for your dryer pointed straight out, then I don’t know how you would do it. And then to me the point of the booster was to put it along the run, to help exhaust the run, the distance that your dryer can’t reach, or at least that was how i took it. Kelvin S. Gerold
No. This is a booster fan for use well away from the dryer when your vent run is too long. From the manual "The DBF4XLT is to be mounted a minimum of 5 linear (not equivalent) feet from the dryer outlet. Exception: A secondary lint trap can be used where required and in applications where excessive dryer lint generation is likely or to increase the time interval between routine maintenance of the Dryer Booster Fan." Also: IMPORTANT NOTICE! TO PREVENT THE POSSIBILITY OF DRYER FAN CAVITATION AND/OR EXHAUSTING EXCESS HEAT REQUIRED FOR THE DRYING CYCLE AND COMPROMISING DRYING TIMES, BOOSTER FAN AIRFLOW MUST NOT EXCEED THE DRYER FAN CAPACITY. In other words, if the fan pulls out more hot air than the dryer fan's capacity, your clothes won't dry too well. It will be pulling out too much of the hot air required to dry your clothes.
The unit must be installed on the exhaust pipe about half way between the dryer and the end of the pipe. You also need to install the Lint Trap Filter as close to the dryer as possible. Check YouTube videos for installation advice. PS. I'm very pleased with the Dryer Booster Exhaust Fan and the Lint Trap Filter I bought at PlexSupply.com
Q: We have this unit, but find it is very noisy. How can I rectify this problem?
Asked by lori 14 years ago
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Verified Reply- PexSupply StaffYou can take the intake side off the duct and clean the lint and buildup off the blades. That usually works.
Q: must unit be cleaned or is it self-cleaning
Asked by Anonymous 14 years ago
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It shouldn't ever need cleaning if installed properly. It should stay at least as clean or cleaner than your duct work which will now stay cleaner because of the fan. Sent from my Verizon Wireless 4G LTE Smartphone
The unit is self cleaning. There is no easy way (nor any need) to access the internal components once installed. My unit was placed in about the middle of a 30 ft run. Without the unit, clothes never completely dried and significant lint accumulated in the 4" steel duct. With the unit in place, clothes always dry in 30-40 minutes with no buildup. I highly recommend this unit if you have a long duct run. wrote:
The info provided with the unit states that the blade design eliminates the need for cleaning. Sent from my iPhone
Must be cleaned, yearly Sent from my iPhone
This is an dryer exhaust fan. As always, you need to keep the lint trap in your dryer cleared of lint after each use. There is a mesh screen at the end of the exhaust piping that could possibly collect some lint. Although for me it has not been a problem. We are very please with this unit.
I have not had to clean it and I install over a 1yr ago.
It needs to be cleaned once yearly Sent from my iPhone
TEventually it will need cleaning, I would set it up with a male electrical plug/outlet and a location where one can take it down from time to time. I have used mine doing laundry for just me for about a year with excellent performance and no maintenance or cleaning thus far. Sent from my Verizon Wireless BlackBerry
Should be cleaned, but not often
Q: Need a quiet booster fan. One that can be regulated. What do you recommend. It is for a short distance.
Asked by geo 14 years ago
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The product reviews suggest that this is a quiet Booster Exhaust Fan. This also should work well for short distances and speed up the drying time.