Tech Drive Super-Quiet 70 CFM, 0.3 Sone Bathroom Ventilation and Exhaust Fan (70CFM)

Moves a lot of air

So much better than builder grade

My house is around 20 years old, and the original Braun fans were getting old and noisy. Since I have existing construction and the four fans in my house are near impossible to get at due to their placement under decade's old insulation, I decided to purchase some replacement fans that could be replaced without having to get in the attic.The Tech Drive bathroom fan, at first glance, checked my boxes: I needed something easily installed, and I wanted something quieter than the jet engines that were the Brauns. They were about 20 dollars more expensive than the Brauns, but if they were quiet and easily installed, it would be worth it. I bought 4.The first two were installed without issue. The hardest part was having to partially disassemble the Tech Drive fans so they could be installed without having to get into the attic or crawl space. But I got them installed, turned them on, and glorious quiet! These fans are significantly quieter than the Braun fans I had before. Probably 1/3rd of the noise of the Brauns. My kids noticed immediately, they thought the new fan wasn't working because they couldn't hear it. With the Brauns, I could pretty much hear them running just about anywhere in the house. With the Tech Drive fans, I had to be right next to the door of the bathroom they were installed in. Super pleased.Went to install the third fan, and unfortunately, I was met with an issue. The little door that sits inside the plastic exhaust had broken off the pivot. I didn't notice until I got the fan installed and turned it on. It was really loud and I could feel air blowing back into the room from it. That's when I disassembled everything again and discovered the broken door. Bummer... Had to take the whole assembly down, box it back up, and return it. Fortunately I had the fourth fan, so I put it in instead and it worked fine. But now I'm short a fan. Amazon is awesome as usual and is sending me a replacement without a problem.Bottom line is, these fans are really nice. They are quiet and easy to install. My only issue was the broken exhaust door, and the reason why I left four stars instead of five.

What a great fan. I replaced my 35 year original 3" tiny fart fan with this one. What a difference. Install wasn't very difficult but i did have to use an extra screw as a wedge for the power wire cover to quiet it down. With that one screw, it is near silent.

I purchased two of these fans as an update from the noisy exhaust fans that were original to my home. I’m rating as a 4 star within my comment because strangely as it sounds they are extremely quiet which makes me question the effectiveness. It’s a preference too have a bit of noise especially for my half bath that is central to the hub of my home.

Not as quiet as expected. It's better than what it replaced but it is definitely not silent. The verdict is out on quality but quietness is why et bought it.

This fan really saved me so I wanted to write a review to share my experience. I previously had a 70CFM 6.0 sone fan with a 3" exhaust in the bathroom that would never properly vent the steam from the bathroom. It was also installed so far down in the corner that it was not accessible from the attic. The 1st problem was to get the old fan out with out going in the attic. I used a crowbar to stretch the metal where it was screwed to the wood. Then the old fan came out easy. I had to enlarge the hole since this fan is bigger. Then it easily mounts with 3 screws. The only problem left was reducing the 4" duct to fit my 3". I know it is best to change whole vent hose to 4" but again that was not an option since it is in such a small area in the attic. Some people have had trouble finding an adapter to fit but I found one...https://www.amazon.com/gp/product/B08JVG4J85/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&th=1It fit right in the fan duct and still allows the damper to operate...then I could use foil tape to secure it. Perfect Install!!!! It is not completely silent but it is way quieter then my old 6 sone fan. It provides just enough background ambient fan noise. This is a life saver for anybody that cant get in the attic but wants to upgrade their ventilation.

I'm glad when a hunch pays off. The dimensions on both are nearly exact. Not only that, but the orientation of the snail vent aligns perfectly with the Broan vent opening. All you have to do is remove the internal outlet connector and firmly but gently rip out the circular collar. It can easily press fit into the housing. At most you will need to source three 3 inch or 4 inch self tapping metal screws to permanently affix the fan into the existing housing and some duct tape to close up any minor gaps. I don't know if the designers had retrofitting in mind when they made this, but it's fantastic.The noise level is much much quieter than the original 4.0 sone Broan. You can still tell there is a running fan from 30 feet away with the door open and an EMPTY house, but it absolutely doesn't sound like the Broan blender it replaced.