

🌡️ Upgrade your airflow game — stay cool, save energy, and never sweat the small stuff!
The VIVOSUN Quiet Register Booster Fan is a smart, energy-efficient ventilation solution designed for 4"x10" register holes. Featuring a programmable thermostat, 10-speed PWM-controlled motor, and ultra-quiet hydro-mechanical stator blades, it enhances HVAC performance by redistributing air for balanced room temperatures. Its durable matte-white aluminum frame and compact design make it both stylish and easy to install, perfect for bedrooms, attics, and any space craving optimized airflow.




















| Best Sellers Rank | #97,403 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #273 in Household Ventilation Fans |
| Brand | VIVOSUN |
| Compatible Devices | 4''x10'' register holes |
| Cooling Method | forced air |
| Customer Reviews | 4.1 out of 5 stars 646 Reviews |
| Power Connector Type | 3-Pin |
| Voltage | 5 Volts |
| Wattage | 6.5 watts |
M**M
Efficient and Quiet Ventilation Boosting Solution
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.
J**N
Saved the day going into summer !
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 .
A**J
Works as advertised
Works Great
L**E
Not QUIET. Very loud. Need to replace fans if you want actual quiet.
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.
N**E
They definitely help
So I bought one to see how well they worked because they were on sale. Long story short, I ordered 3 more while they were on sale for 50% off But anyway I bought one to help heat our living dining kitchen area which is about 25x20’ or 500sqft with a 12’ vaulted ceiling. One made a slight difference but 2 really helped warm the room. This room is the farthest from the furnace and has the old style base board diffusers that sit above a 2x12 vent or what should use a toe kick . I just kind of have them rigged up for the time being until I figure out a more permanent solution. One thing I noticed is that the airflow is easily restricted so make sure they have plenty of room behind them when installing or it will severely limit the airflow. They are a little noisy on 10 but most fans are when they are on the highest setting.
A**A
Better than expected, half of what I spent on my last one that blew half as much air.
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.
L**.
Only worked for ~4 months
I’ve only used one of the two I bought. The one I had been using was doing well: it had great air flow, the cool/warm options seem to work well, the fan speeds were great and it wasn’t too noisy. That was until the other day when two of the three buttons completely stopped working. They can’t be pressed at all. I even tried using a screwdriver for leverage in case they were stuck. No dice. The other button can be pressed but it doesn’t do anything. For the length it worked the value for the cost wasn’t worth it. I also wasn’t a huge fan of the cord system as it was a little awkward. If I could still return it I would.
B**R
Good product
Not loud at all looks good and helps cool our room. Easy to install good quality and fit
Trustpilot
2 weeks ago
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