Quiet Register Booster Fan Fits 6" x 10" Register Holes, 10-Speed Smart Heating Cooling AC Vent Fan with Remote Control and Thermostat Control - White

UPDATE: The first unit is still working flawlessly (four months, now). The second unit, that I bought using the "50% off a second device" promo code they provided with the first unit, arrived very quickly and is also working great. As a matter of fact, yet again using the "50% off a second device" promo code they provided with the second unit, I bought a third unit at half-price again! This is a great company!Original Review: Item arrived quickly, well-packaged and as described. Device has been in use for three months. Some things to know about this device: 1) It only moves air, it does not add heat to the air being moved; 2) The remote controls fan speed only, it does not adjust the temperature setting; 3) If set up properly, it will actually save on heating costs and help keep a room warmer. My house has (somewhat insulated) under-floor ducting with a long run to a single register in the back bedroom; this room was always 3-5 degrees cooler than the rest of the house. Installation was very simple, especially since there happens to be a 110V outlet near the register I replaced. With the central heater not running, I pulled out the old register and dropped the Biowind fan in its place and plugged in the power cord. I then pushed the MODE button to turn on the display to show the temperature of the air in the duct (63 degrees in my case). I then followed the directions in the manual to set the fan’s “come on/trigger” temperature to 65 degrees, which is 2 degrees above the static duct temperature (Note: this method is different than what the manual states… it says to set the trigger temperature with the heater running). And that was it, other than using the remote to select a desirable fan speed/noise level (it does get a bit louder as the fan speed increases). With this set up method, the booster fan is off until the heater starts running and the duct temperature reaches 65 degrees at which point the booster fan starts to run. And, it will continue to run until the heater eventually turns off, and the duct temperature drops to below 65 degrees. In my case the booster fan runs for 15-20 minutes after the heater turns off. Now some reviewers have stated that the booster fan actually blocks quite a bit of the airflow coming from the duct, so it’s not really doing anything and may slow down the heating process. This could be true if the booster fan is set at very low fan speeds. However, at higher fan speeds it does do some airflow boosting. But, boosted airflow is not the main feature of this device… moving the heat from out of the duct into the room is what’s really important. Think of the air duct as a heat reservoir while the heater is running and even after the heater goes off. The air sitting in the duct is still hot for quite while (up to 117 degrees in my case) and has no place to go but to be slowly dissipated under the floor. With the booster fan continuing to run after the heater has gone off, it’s pulling that “wasted” heat out of the duct and into the room; and, will continue to do so until the duct temp drops below the “trigger” temp setting (65 degrees in my case). Another nice thing about this booster fan, when fan comes on it starts low and quietly and then slowly gets up to speed. The booster fan comes with info on how to get 50% off a second device, which I took advantage of with the company responding very quickly and I had the second device very quickly (and, at half-price!). It’s near impossible to determine if (and/or how much) this device saves on my heating costs due to outdoor temperature differences from day-to-day compared to before installing it, but I know for a fact that the back bedroom is 3-5 degrees warmer now. It comes with a 2-year warranty; I bought the 4-year extended warranty for $11.99; now covered for 6 years. I have, and would, purchase again. Note: I think it would be helpful if the seller made the User Manual available on the Amazon listing so prospective buyers could get a better feel for how this device works.

I was very hopeful when I bought made this purchase and it didn’t disappoint. My boys bedroom(which is over our garage) is always extremely hot in the summer and freezing in the winter. I purchased this in June and after three months of use am confident enough to write a review. This product is fantastic. It definitely cooled off their room a lot. And helped circulate the cool air much quicker around the room. I did not find it noisy at all, just sounds like a regular soft fan noise. I am looking forward to it warming their room in the winter.

I have an upstairs bedroom with a north window that was always too hot. Even setting the HVAC system fan on "continuous/high" it was 79-80 degrees in late afternoon when the sun hit the window.Keeping our HVAC fan continuous/high, I experimented with the options on this unit. Having the fan on this booster set at max speed (5) did cool the room to 74-75 degrees on a hot sunny day. The cool setting worked as well and I could set the fan to the max speed, also.Note the small area for the thermostat so it doesn't block the vent much. This measures the temp IN THE VENT. I set it at 75 degrees so anything lower than that and the fan would operate. Higher that that it will shut off.This unit is 200CFM where the others are lower so that really helps move more air. The light can be turned off and the unit still works as set. It installs easily.It's a little noisy at speed 10, but it gets quieter when the fan is on lower settings. If on the "Cool" setting, the fan comes on and off automatically, but it soft starts and the noise gradually increases.

These are marketed as quiet and they definitely aren’t quiet but they make such a difference on our second floor at controlling the heat in the summer. We have tried regular fan and constantly running ceiling fans with no luck and these vent fans finally helped keep it cool up there!

I needed to boost the AC in the upper rooms of my house.At first I ordered AC Infinity Boosters.They worked well in terms of cooling, but the noise! The high-pitched whirring noise of their fans at speeds of 5 and above.I couldn't sleep well.AC Inifnity displays do not turn off ever, so at night they shine bright in the room, again disrupting sleep.So back to Amazon I came and I discovered Biowind.Their fans' sound is much quieter and muted; no high-pitched sound.Plus the display switches off after about 5 mins.Biowind is also easier to configure and has a remote to change fan speed.AC Infinity has more customizations, but I did not need all those options.

This little unit worked very well for the room upstairs, so we I bought two more for the remaining bedrooms on the second floor. We have been battling the climate change from the first to the second for years, from trying to decrease airflow on the main and hoping it would make a difference. But to no avail. Even considered a new air handler since this unit is well over 20 years old. Buying these air ducts probably saved us thousands. Now whenever we go upstairs, there is noticably no change in temp from the first to the second floor. Absolutely amazing and could not be happier. Don't know how long they'll last yet as they are brand new. But for this price, I think it's worth the investment. I've read good and bad reviews on just about every brand and took a chance on this purchase. Sometimes you win! I also emailed their customer service and they were very helpful and prompt with their response. This unit and company check all the boxes with regard to product and service. They are not loud at all, and on max fan speed they basically give off a bit of white noise, which my son actually appreciates for sleeping. Elated customer here!

We have always had a significant temperature difference (hotter!) in our 3rd floor bedroom. The builder added an in-line fan to the duct that services that part of the house, which helped but air flow was still not the same as in other areas. In short, the cool air was there at the register, but there just wasn't much velocity. The Biowind Register Booster Fan has helped that situation noticeably. We have a second register in that bedroom, so intend to order a second unit.

Easy to install and it actually works. It’s quiet when the fan is set on a lower setting. Great product and highly recommend.

Tried other products and this was way more effective. Customer service was wonderful as well when I had an inquiry.Love that you can adjust the speed if the fan up to 10. Cooled down my living room very quickly

My bedroom never gets air. The rest of the house seems fine. So I got this because I didn't want a direct fan on me. It was a perfect fit. I didn't screw it in place as it's in the floor and fits perfectly. I've set mine to match the temperature it was detecting so it runs continuously. I just lower or raise the "fan" level as needed. As high as possible when I'm about to sleep and around 6 for the night. Hope this helps!

Love the look and it did boost the air from the air conditioner. Cooled the air so the air conditioner didn't have to work as hard.