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Tjernlund

Tjernlund M-49504351 in-Line Fan with Current Sensor Switch Dryer Duct Booster M-4, Metal, 4"

    • Based on 423 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Minneapolis Master Distributors
Arrives Saturday, May 25
Order within 18 hours and 13 minutes
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Features

  • 4" metal in-line duct booster
  • 200 CFM
  • Includes Current Sensor Switch
  • Made in the U.S.A

Description

Versatile and durable this 4" metal in-line exhaust fan features high pressure air handling performance with low noise and extremely low power usage. This fan and control combination can be used to activate this fan as another appliance, fan, or other device receives power. Often used for Duct Booster, Dryer Boosting, Equipment Cooling, Factory Exhaust and many other applications. The Sun court Current Switch is designed to turn 120 VAC devices on when it senses and input current. The Current Switch is UL 94-V0 rated for safety of flammability of plastic materials for parts in devices and appliances. The output switch rating is 120 VAC with a running frequency of 45Hz to 65Hz and its max ambient temperature is 140°F.

Brand: Tjernlund


Electric fan design: Blower


Style: M-49504351


Controller Type: Button Control


Blade Length: 1692.91 Inches


Item Weight: 4.11 Kilograms


Specification Met: UL


Control Method: App


Is Discontinued By Manufacturer ‏ : ‎ No


Package Dimensions ‏ : ‎ 12.3 x 10.2 x 10.2 inches; 9.05 Pounds


Item model number ‏ : ‎ M-49504351


Date First Available ‏ : ‎ December 8, 2012


Manufacturer ‏ : ‎ Tjernlund


Best Sellers Rank: #69,790 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #118 in Clothes Dryer Replacement Vents #981 in Dryer Replacement Parts


#118 in Clothes Dryer Replacement Vents:


#981 in Dryer Replacement Parts:


Customer Reviews: 4.5 4.5 out of 5 stars 423 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Works as advertised, solved our dryer vent "problem"
Style: M-49504351 Pattern Name: Duct Booster
Review Image by Grampy Grampy
My dilema: When we bought our "summer house" the dryer exhausted into a normally closed garage.. (who does that). This was not only a serious humidty problem but now the garage was a lint collector (what a mess). The back of the garage is built into a hill and is below grade, so I had to run the dryer exhaust up about 10 feet to exhaust it above ground level. This worked except the exhaust flow was reduced enough the wife reported drying time almost doubled. The Solution is: This fan, I installed it and it works like a charm, drying time is returned to normal, this is not only convenient, but is assumed to be a significant energy savings. The installation instructions are straight forward. The included "current activated switch" is an excellent feature (very desirable feature) in that it turns power to an outlet on, that this fan is plugged into when my dryer runs. The installation of the "current activated switch" is an added complexity. I was able to easily accomplish this installation since I have adequate room in the breaker panel (the dryer is powered from) to mount it. In my situation I did have to cut the drywall to install the wiring and outlet for this new fan, and to install 2x4 backer boards for proper mounting and support of the fan. The diameter of the fan inlet and outlet make hookup to standard 4" ductwork a breeze. Had I realized this I would not have installed the cleanout before the fan, I could have easily removed the duct(s) and replaced it after routine / periodic cleaning. I do recommend this product if it is necessary to increase dryer exhaust flow. I would buy this product again if I needed it. ... show more
Reviewed in the United States on July 19, 2023 by Grampy Grampy
    • Man what a huge improvement!
Style: M-49504351 Pattern Name: Duct Booster
I installed this since my dryer exhaust runs straight up the wall and to the roof. It was always clogging and it took forever to dry a load of clothes. There was a huge dust problem inside my house since the dryer just couldn't push the exhaust out and it basically blew out at every leaky point inside the dryer and the poor connection from the dryer to wall. I eliminated those leaks by using 2 back to back 90s and taped the connections then clamped.. I installed the fan at the midpoint of the duct in the attic and since its rigid I didn't bother to hard mount it to a structural support.. wired the switch in using 115v power tapped into the switch for my AC blower unit. It's a 15amp ckt.. the AC blower pulls 6 amps.. this blower pulls 4. So it'll be fine. I split the 240v ckt to the dryer in the attic just before it goes down the wall adding a deep double gang box and ran a single Romex 12/2 out as a switch leg off the supplied Switch/sensor and ran one leg of the 240 through the sensor. Added a second single gang box by the dryer vent duct and installed a plug where the returning hot from the switch turned the plug on and off... Then just plugged the fan in, turned the dryer on and the blower turned on just like it should.my dryer is electric but a gas dryer would just need the sensor switch inline with the 120v supply.. so not a big difference in configuration. I guess if I ever sell the house I'll need to inform the new owner of the change needed to activate the fan for a gas dryer. With this fan in line my drying time has nearly reduced by half. I tested it with a load of towels before and after... Before it took an hour to dry . Now it takes approximately 35 minutes. My prior lint/dust problem is now non-existent and it is consideraly noticeable when dusting, the laundry room is much cooler, and the overall amount of lint the dryer trap catches is less.. I'm guessing this is because of the reduced overall time the dryer is running in order to dry the load. I didn't bother installing a second lint trap in line before the blower simply because I didn't want to.. it would have been a real chore to put in the wall behind the dryer and it would have been difficult to access had I put one in line up in the attic. I'm honestly thinking it'll never be a problem but time will tell. Overall, this is a huge improvement from the original set up! I realize that a gas dryer is more efficient and I have always had gas in the past.. but I was left with using electric since my set went out and I got this set at a price I couldn't pass on. Either way, gas or electric; the addition of a duct blower is huge.. I never knew these even existed until one day when I had to clean the exhaust again.. I thought.. there has to be a better way.. there has to be a good solution to my all too common problem.. and within a 2 minute Google search I found it. Now I could have elected to buy the version of blower where the motor is located outside of the housing.. but the price was considerably more. And once I researched the subject as well as read numerous reviews, I decided on this one. It's American made.. has a long standing good reputation, Its affordable, and it plain works. There are similar clones out there but the internals are vastly different and the components are of lesser quality.. I have no hands on experience to back this up. But the information is out there. If you need a good solution to a problem such as mine. This is the way to go. Only con I can see is the need to wire in the sensor switch. I happen to be an electrician so it wasn't a big deal for me..but some home owners may want to have this done by a professional. Remember this.. there is a good reason why we have a National Electric Code and licensed and insured electricians... Poor electrical installations cause fires.. I'm pretty sure there is a simple solution to using a blower such as this without the need for an electrician.. like a fan with a sensor to detect air flow.. or heat.. but the electrical current sensing switch is reliable. Good luck with your search.. ... show more
Reviewed in the United States on April 6, 2019 by Shawneliason
    • This blows! (As it should)
Style: M-49504351 Pattern Name: Duct Booster
Review Image by LetTheGoodTimesRoll LetTheGoodTimesRoll
Review Image by LetTheGoodTimesRoll LetTheGoodTimesRoll
This drastically reduces the dry time. From almost an hour down to 20 minutes. It will resolve the flow problem in our long dryer hose. We used our electrician friend to guide us on the wiring. Installed onto a floor joist so it is noticeable loud in that room. We may add rubber grommets as vibration dampers. All in all we are very satisfied that this was a big improvement. ... show more
Reviewed in the United States on August 17, 2023 by LetTheGoodTimesRoll LetTheGoodTimesRoll

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