- VIVOSUN Quiet Register Booster Fan 4”×10”, Smart Register Vent with Intelligent Thermostat Control, Cooling Heating AC Vent Booster Fan, Brown

This thing is great! We don’t use it in the traditional manner. We have a wood stove in our basement and registers cut in the floor upstairs to let the heat up. We got one to put in the register right above the stove and it works great. As it warms up downstairs it turns on and just pumps that heat up. So far it’s proven to be very durable and it’s not very loud at all. No different than a fan

I recently purchased the VIVOSUN Quiet Register Booster Fan 4”×10”, a smart register vent equipped with an intelligent thermostat, and my experience has been overwhelmingly positive. The device is remarkably easy to use, allowing for the setting of high and low temperature points. This feature ensures consistent temperature management throughout the year, adapting seamlessly to seasonal changes without any manual adjustment required on my part. The VIVOSUN fan not only came at a more attractive price point but also outperformed my old unit in every aspect. Its effectiveness in temperature control within my home has been exceptional, offering a hassle-free solution to maintaining an ideal climate. In summary, if you're in the market for a register booster fan that promises and delivers efficiency, ease of use, and reliability, the VIVOSUN Quiet Register Booster Fan is an outstanding choice. It represents a significant upgrade over other options in the market, not just in terms of cost but more importantly, in its performance and quality.

We moved into a new house last year and we love it but some of the rooms are a little chilly in the winter. I bought this fan to try to warm the master bedroom. It works very well. Our master bedroom is the furthest from the furnace and I don't think our system is balanced very well so the fan gives that extra boost to get warm air to the bedroom. Exactly what we needed. It is a bit loud but I don't mind. We sleep with a fan running anyway and this is no louder than that.

These fans are so loud at max fan speed. I read a max of around 53 decibels. That is the sound of a hairdryer constantly running in the background. I can't slow down the fans, Otherwise the airflow within my workspace would suffer. so I replaced the fans with quieter ones. it turns out that these fans are not special. they are DC controlled 80mm computer fans. So by splicing in noctua fans into the original leads, the fans are now so quiet that you cannot hear them at maximum speed. Obviously the airflow has been cut in half and I cannot displace the same amount of air in an hour as with the old fans. But these are advertised to be QUIET. A hairdryer blowing air 2 feet away is not quiet. Its clearly not and the seller should not advertise that its QUIET. Other than that, it was easy to install. looks okay., and functions as it should. Boosting airflow in rooms that do not have much. Overall, if you are expecting more like a whisper (31 decibels) for these fans, don't bother. the lowest is around the volume of a coversation with no shouting (41 decibles ), to a hair dryer (53 decibels). You need to replace those fans. Thankfully, the process is simple with a soldering iron and a few hours. but for those who want a quiet, all in one solution, go with a different seller.

It works great. Great company , I have used Vivo sun products for years . Great customer service. I see some complaints about fan noise . That’s ridiculous. It’s two high powered fans that are in a vent . On highest setting it’s not even that bad but will make some noise. Works great. We have a back bedroom that doesn’t get good airflow this solved the problem and saved the day going into summer . Also in my experience with electronics , keep it simple . Just use the fan. If fans with other bells and whistles are constantly turning on and off there are more opportunities for something to fail and then cause catastrophic failure in equipment. I need airflow so I just keep it on high fan setting and leave it alone .

Bought this to replace one that I had for a couple years. I love this one so much better. The last one just had knob dials and it was hard to get it just right. This vent is next to the wall by a couch so I haven't had anyone step on it yet and can't vouch for that type of durability. It's not as noisy as the last one, it blows out more air too. The air moves the leaves on my mom's plants when I put it on high, it's 12 feet away from the vent. I like that it's not completely quiet because that's know I know it's working and that the furnace just turned on. Sometimes my mom likes to open the door for fresh air and she'll close it when she hears the booster fan turn on, otherwise she wouldn't be able to hear the furnace running since it's on the other side of the house, and pretty much outside. I had to tinker with what low temp to set for it to start running. When set too low it would turn on without the furnace running. I have a swamp cooler, so I don't know how well it works with the AC, just the furnace. Since I bought the house, we've only have one working vent hooked up to the ducts for the whole front 18 feet of my double wide and this vent booster makes up for the other vent in the dining room being closed off for some reason. It's a big job to hook it up since I'd have to tear out the insulation and underbelly material to get the the ducts, this booster saves me from having to deal with that headache of a job. Without a booster, my living room was so cold in the winter. That's the reason I bought the first one from a store, but this one is much stronger and I love that I can play with the settings easier with buttons and digital screen vs little knobs and guessing. It fits perfect, nice and flush with my tile flooring. I have a vent deflector shaped like a "C" with the magnets on it covering the vent so it blows in the direction I need, I just taped it to the floor around the vent so it would stay in place since the booster is plastic not metal. I feel it helps the air flow stronger to warm up more space. This booster and a deflector are a perfect combo if it's not in a place someone will walk, they make ones that push the air straight up too instead of the "C" shape.

workd=s well and has simple to use controls. Keeps the room warm when it was constantly cool before.

Very good product! We use it to pull air from our wood heater in the basement, we have tried a couple of other brands, but they do not rate like this one. Simple to use, very well built, and it moves a lot of air. We do not use it in a vent, but i can see how un-obstructive it would be to the air coming from the HVAC Large opening for the air to pass through, and runs very quietly compared to the others we have. We will be replacing the other brands with this one. :)

This register works amazing Keeps the room nice and warm compared to before

Worked great for less than a week. Then it broke. I’m pretty handy, there is no way for me to fix this. I ordered a replacement. Hoping this was just a lemon. It’s not “quiet” you can absolutely hear it, I did have it on the highest setting though but you will hear it.

Bought this for the vents in a couple rooms in my house, that have poor vent performance. Didn't realize that the inside dimensions of my vents are all 3" by 10", though, so they didn't fit (the inner dimension of your vent does indeed need to be 4x10 to work with these). Plugged it in to test out the performance any way, and: - VERY quiet - Fan seems pretty strong Hard to say exactly how it would have performed if it fit into my vent (and they don't make a 3x10 version that I could find) but worth giving a try if you do have 4x10 vents!