BIOWIND Quiet Register Booster Fan, Fits Smart Register Vent 4" x 12" Recording Holes with Remote Control and Thermostat Control, Heating Cooling AC Ventilation Fan - White

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!

Perfect pushing room to room. David Weekly homes are well built fantastic homes, however a 4500 Square foot home should not have a 2ft x 18in X 7ft pantry. I built a very nice add on pantry but no ventilation. I purchased this fan and did a cut out install from another large room with decorative cover on that room. NOW I have more than ample air being pulled into the new pantry. Easy install and LOVE the outcome.

I bought two of these just over 1 year ago. They worked well but now one fan is making a horrible noise. There is no way to contact the manufacturer for service / warranty questions. No email no phone numbers. Very disappointing.

I like this register fan! I wish they made a 4" x 14" size. That's the size I needed. I searched all over the internet but nobody made a register fan that size. I ended up making an adapter with my old register cover which was a real pain in the butt. I believe if they made a 4" x14" model they could squeeze 3 fans in it instead of 2 and it would move even more air. It helps to regulate the temperature in the room but only by a couple of degrees. It's fairly quiet and the remote control works well.

This register fan is a huge improvement to the heating in my bedroom. My bedroom is above the garage and was an add on years after the house was built. The way that the previous owner had the duct-work built meant that the heat in the bedroom was never adequate. Due to the size and the design / location of the duct-work, there isn't enough room to add the booster fan as a direct insert to the duct. I manufactured a box to fit over the duct and mounted the fan to the box. I added a 45 degree angle so that the fan delivers the heat more centrally into the room. The room temp is about 4 degrees warmer than it was before the fan / box combination.