We had nothing but problems with our dryer when we moved into this house due to a long vent run. Clothes taking 2 hours to dry, water dripping from the vent pipe at various locations. Adding the in-line fan has made the laundry process workable again!
Our first order was sent without the Current Sensor but there’s no indication of what I was looking for (basically the fan is in one box and the current sensor is in a separate package; the two are not part of one “product”) so when our first order showed up without the sensor I didn’t know what was missing or how it worked. The fan box and instructions don’t even mention a sensor (the sensor is a black plastic rectangle box about the size of a deck of playing cards, with a 3/4” hole through the middle of it). 鶹 corrected that for me easily though (nice work 鶹!)
Installation was a little tricky (as I mentioned the fan instructions don’t mention the current sensor, the Tjernlund website doesn’t mention anything about this fan being used with this current sensor, and the current sensor instructions leave a lot to be desired but a bit of googling helped). You install the sensor on one of the dryer load lines, run a 14/2 wire from the sensor to your fan location (which makes the install options pretty flexible; I've seen some install the fan at the end of their vent run, or in their attic or crawl space, but I installed mine about 5’ away from my dryer so not too far of a run) and terminate it in a receptacle junction box (the sensor is just a switch, so wire the sensor just like you would wire a switched receptacle). Plug your fan into the receptacle and screw the fan to the wall or ceiling or whatever works for your area.
I installed the sensor on one of the dryer load lines in the wall junction box (a 240v 10/3 circuit). Had to get a larger dryer JB though to allow the sensor to sit inside the JB with enough room so I didn’t overload the box fill code requirements. I’ve also seen some who install the sensor inside their dryer (seems weird to me) and some who install a second smaller JB just to house the sensor. So make sure you’re comfortable tackling a bit of a complex problem, or hire a professional. For my dryer it was trial and error to figure out which load line was the correct one. So you have to disconnect the power at the breaker, thread one load line through the hole in the current sensor, turn the breaker back on, and turn the dryer on. If the fan doesn’t start, repeat using the other load wire.
Once it was in though, it turns on as soon as we start the dryer and adds only a small increase in noise over the dryer noise. Clothes dry in a decent 40 mins or so, and the vent pipe stays dry as a bone! All in all a great solution!
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Tricky to install, but a great solution!
We had nothing but problems with our dryer when we moved into this house due to a long vent run. Clothes taking 2 hours to dry, water dripping from the vent pipe at various locations. Adding the in-line fan has made the laundry process workable again! Our first order was sent without the Current Sensor but there’s no indication of what I was looking for (basically the fan is in one box and the current sensor is in a separate package; the two are not part of one “product”) so when our first order showed up without the sensor I didn’t know what was missing or how it worked. The fan box and instructions don’t even mention a sensor (the sensor is a black plastic rectangle box about the size of a deck of playing cards, with a 3/4” hole through the middle of it). 鶹 corrected that for me easily though (nice work 鶹!) Installation was a little tricky (as I mentioned the fan instructions don’t mention the current sensor, the Tjernlund website doesn’t mention anything about this fan being used with this current sensor, and the current sensor instructions leave a lot to be desired but a bit of googling helped). You install the sensor on one of the dryer load lines, run a 14/2 wire from the sensor to your fan location (which makes the install options pretty flexible; I've seen some install the fan at the end of their vent run, or in their attic or crawl space, but I installed mine about 5’ away from my dryer so not too far of a run) and terminate it in a receptacle junction box (the sensor is just a switch, so wire the sensor just like you would wire a switched receptacle). Plug your fan into the receptacle and screw the fan to the wall or ceiling or whatever works for your area. I installed the sensor on one of the dryer load lines in the wall junction box (a 240v 10/3 circuit). Had to get a larger dryer JB though to allow the sensor to sit inside the JB with enough room so I didn’t overload the box fill code requirements. I’ve also seen some who install the sensor inside their dryer (seems weird to me) and some who install a second smaller JB just to house the sensor. So make sure you’re comfortable tackling a bit of a complex problem, or hire a professional. For my dryer it was trial and error to figure out which load line was the correct one. So you have to disconnect the power at the breaker, thread one load line through the hole in the current sensor, turn the breaker back on, and turn the dryer on. If the fan doesn’t start, repeat using the other load wire. Once it was in though, it turns on as soon as we start the dryer and adds only a small increase in noise over the dryer noise. Clothes dry in a decent 40 mins or so, and the vent pipe stays dry as a bone! All in all a great solution!
Top reviews from Canada
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- Reviewed in Canada on March 31, 2021Verified Purchase
We had nothing but problems with our dryer when we moved into this house due to a long vent run. Clothes taking 2 hours to dry, water dripping from the vent pipe at various locations. Adding the in-line fan has made the laundry process workable again!
Our first order was sent without the Current Sensor but there’s no indication of what I was looking for (basically the fan is in one box and the current sensor is in a separate package; the two are not part of one “product”) so when our first order showed up without the sensor I didn’t know what was missing or how it worked. The fan box and instructions don’t even mention a sensor (the sensor is a black plastic rectangle box about the size of a deck of playing cards, with a 3/4” hole through the middle of it). 鶹 corrected that for me easily though (nice work 鶹!)
Installation was a little tricky (as I mentioned the fan instructions don’t mention the current sensor, the Tjernlund website doesn’t mention anything about this fan being used with this current sensor, and the current sensor instructions leave a lot to be desired but a bit of googling helped). You install the sensor on one of the dryer load lines, run a 14/2 wire from the sensor to your fan location (which makes the install options pretty flexible; I've seen some install the fan at the end of their vent run, or in their attic or crawl space, but I installed mine about 5’ away from my dryer so not too far of a run) and terminate it in a receptacle junction box (the sensor is just a switch, so wire the sensor just like you would wire a switched receptacle). Plug your fan into the receptacle and screw the fan to the wall or ceiling or whatever works for your area.
I installed the sensor on one of the dryer load lines in the wall junction box (a 240v 10/3 circuit). Had to get a larger dryer JB though to allow the sensor to sit inside the JB with enough room so I didn’t overload the box fill code requirements. I’ve also seen some who install the sensor inside their dryer (seems weird to me) and some who install a second smaller JB just to house the sensor. So make sure you’re comfortable tackling a bit of a complex problem, or hire a professional. For my dryer it was trial and error to figure out which load line was the correct one. So you have to disconnect the power at the breaker, thread one load line through the hole in the current sensor, turn the breaker back on, and turn the dryer on. If the fan doesn’t start, repeat using the other load wire.
Once it was in though, it turns on as soon as we start the dryer and adds only a small increase in noise over the dryer noise. Clothes dry in a decent 40 mins or so, and the vent pipe stays dry as a bone! All in all a great solution!
Images in this review
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Reviewed in Canada on June 16, 2023Verified Purchase
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- Reviewed in Canada on November 27, 2020Verified Purchase
Top reviews from other countries
- cdReviewed in the United States on January 3, 2023
Great fan, much quieter than I expected.
Verified Purchase
I bought this fan to place in the middle of a 20ft run of dryer duct work. My install took several days, because I wasn't just adding a fan but replacing existing duct work. The original ducting was 3x10 flat, so I replaced the majority of it with 4" rigid ducting and placed this fan in the middle of the run. I mounted the fan on a cross-brace I made out of some spare lumber, and used jointed connectors so I could get the fan above the drop ceiling in my basement. The included Current Sensing Switch was fairly easy to install and works like a boss. I wound up placing an outlet above the drop ceiling instead of hard wiring the fan to the switch. The fan is directly below my kitchen, but even when you're standing on top of the fan's location, you can barely hear it... even in the basement, the fan noise is minimal. I'm very happy with the product.cdGreat fan, much quieter than I expected.
Reviewed in the United States on January 3, 2023
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- Mountain ManReviewed in the United States on July 19, 2025
Surprisingly quiet but well made.
Verified Purchase - I.G.Reviewed in the United States on September 30, 2024
The best solution for long duct!
Verified Purchase
I have long and complicated dryer duct lines due to the location of the washer and the dryer. My clother were always damp and towels always smelly.I.G.The best solution for long duct!
Reviewed in the United States on September 30, 2024
I ordered this fan as my last hope and was able to install it during the weekend.
This fan is a mirracle. It is not a temporary fix, but a solution for problems like mine.
It immediately increased the flow and alleviated the work of dryer's motor.
My clothes are finally dry and smell nice.
Few things to know:
1. If you mount it on the wooden floor structure (trusses), you will feel the vibrations. Not bad, but noticable. I used rubber washers on all sides, but still the vibration is noticable.
2. The instructions are vague and do not include how to wire it using the current sensing switch. If you are not handy, do not try to wire this fan yourself.
3. There are helpful "how to" videos on Y*uT**e. Everyone says the best place to mount this fan is at the end of the duct, but if you can't, don't worry, mid way is still ok.
4. It is helpful to unstall additional lint trap right before the fan as added security. This will save you the headache to clean your duct every so often, and perhaps increase the life of the fan itself.
Good luck!
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- Benjamin ChenReviewed in the United States on September 25, 2023
A bit complicated to install, but worth it in my opinion
Verified Purchase - PitafunReviewed in the United States on November 23, 2022
Great little machine but...
Verified Purchase
