BIOWIND Silent fan for registration, intelligent ventilation for 4 x 10 inch registration holes with remote control and thermostat control, vent fan

I was truly amazed how well this register worked. It did an excellent job helping to heat a very cold mud room in the winter. Recently I moved it to our bedroom during a heat spell with high humidity. The circulation in our forced air furnace which our heat pump is connected to isn’t great. Our bedroom was very warm. This register help to cool off the room very quickly. It was like a different room after the register ran for a short period of time. The manual was simple and clear and the message was if you have any issues at all contact us immediately! I would buy again.

I was a bit skeptical of this item at first, had a different product years ago that didn't seem to help. But the second story in our home tends to run 3-5 degrees warmer in the summer than the main floor where the thermostat is located and took the chance that this may help. Installation was quite easy, just make sure you get the right size, loved that they had a variety of size choices unlike many other competitors. I admit, it took me a few minutes to understand how to lock in the settings correctly, but got them eventually. The highest fan speed is a bit noisy, but we are a fan family and it's more just like background white noise. And we'll take the noise because the velocity with which it pulls the air is quite strong, you can feel it from several feet away! We are very happy with the unit, when the AC is running, it cools the room to the exact same temperature as the thermostat is set, even a degree lower sometimes! That being said, you have to understand how it works. You program the cooling temperature lower than the thermostat setting by a few degrees, but not colder than the temperature of the air when the AC is blowing. The fan should be off until the AC starts blowing, and once it senses colder air, the fan turns on. This means that when the AC is actively blowing, it makes a significant difference in the room temperature. However, if there are longer periods when the AC is not blowing, the room temperature will creep back up because the unit is off (as it should be since it would then be pulling in hotter air just sitting in the vents). Just a word of caution so you have realistic expectations. My only minor complaint is that it does seem to take a couple minutes to turn on after the AC starts blowing, and stays on for a couple minutes after the AC clicks off. But it's a minor issue and does not seem to detract from overall performance.

This product does work wonders. My central a/C vents are on the floor. This product sucks the air out of my vent making my bedroom nice and cold. I love the level of speed. A do recommend. Just make sure you have the right measurements.

Waited over a week to make sure I liked it! What can I say? For background I’m in a very hot and humid climate during the summer and my upstairs bedroom is more similar to a jungle than to anything. But I can’t keep pumping my AC down; my basement is already equivalent to a kitchen walk in and my bank account can’t handle much more. So this vent was sort of a Hail Mary. It works exactly as I need it to. It’s not a miracle worker; but it’s darn good. It has lowered the temp of my room in comparison to the rest of upstairs which is exactly what I needed. It’s not quite as cool as my lower floors but it is making sleeping a lot easier. I’m able to use a blanket at night again thanks to this vent. It works very simply; setup took only a few minutes just had to unscrew the old vent and screw this one in, and made sure there’s a plug close enough. It can do both cooling and heating and I will be sure to try the heating in the winter as I have the same issue of my upstairs not conforming to the temp of the rest of the house. The fan is pretty quiet, I have it on a 7 but it goes up to 10, which I may need as we march towards a hot July. I’d say on 5 or lower it’s so quiet you barely notice, on 7+ you notice but it’s still about the same noise as a regular fan so no big deal for me. And it’s easy to adjust with the included remote. AND it looks nicer than a normal vent cover. Overall can’t recommend this enough, it’s been a huge help in my ability to sleep soundly and comfortably at night and actually be able to BE in my room on hot days.

I have an undersized AC in my home and my living room has 12ft ceilings and it struggles to stay cool during the summer. The output from the vents (in the floor) is there, but not as strong as it should be so after looking at a few much more expensive register booster fans I decided to the give this a try since they didn't have the size I needed. This actually works perfectly for what I need: - Turns on a set point for either heat or cool. - Has a screen lock (This feature is amazing - I have a very curious child that loves buttons). - Significantly more air output that the existing register. I have to run mine on speed 10(which is the noisiest) to get the air output I need for my space but the sound is tolerable for how much money these will save me. Also, kind of a nice feature is that the fans don't suddenly spin to the maximum speed rather they ramp up and ramp down. With the greater output I'm feeling optimistic my AC will be running much less this summer. I'm super pleased with these, especially for the price!