This 80 CFM one is the right size for the our washroom, but this is so quiet and a little smaller than the old one it replaced, I think I could have probably fit the higher CFM one and it would have still fit and be quieter and an upgrade too. It has been working fine for some time now, and I have no complaints.

good stuff

Installation went smoothly. Design is intelligent. I'm happy with the noise levels and air volume.

VERY QUIET. Hope fully wore just as well!

Quiet, efficient, easy to set up. Would buy again if needed elsewhere in the house.

Easy to install and very quiet. I haven’t explored the moisture sensing part yet.

Nothing to complain. about. it works, good value and moves a lot of air silently. replaced my entire home with these fans. All the one star reviews are likely due to installation error. it's very evident the fan blades are rubbing against something.

Funciona perfectamente, se instaló en un cuarto de máquinas de alberca.

Was great set up for existing construction install replacement , as the internal is held by two side clips and the turbine comes out so you can deal with installing just the metal casing first giving you access inside to screw metal box on existing frame , if your frame is on the right side just drill 3 holes like the pre drilled ones on the left , for some reason they are all on the left ,metal box area to tuck all wires in metal housing box , the unit has nice bright lighting and is quiet and draws very well ..

SEE UPDATE BELOW:It's a bathroom fan. Is it quieter than the 30 year old original fan? Yes. Is it super-ultra quiet as advertised? Nah. Most aggravating: the clips that attach the fan cover will not snug the cover up to the ceiling no matter what. I went round and round with it. The picture above shows light shining around the outside frame - where the frame should be tight to the ceiling. That's a problem.UPDATE: Reconsidered my original review. 1) Apparently the lighted cover design provides for a small seam of light around the top where it snugs up against the ceiling. It drove me crazy at first thinking it should seal tightly, but it looks as if it's supposed to be that way. I actually kinda like the way it spreads the light against the ceiling. As always, make sure you seal around the fan housing once it's installed. 2) It actually fit perfectly into the old 7.5" x 7.25" opening. I did not have to go into the attic to install. 3) The fan was pretty quiet after installation; once the cover was in place the fan much quieter! Overall the unit seems very well made and durable. I'll by buying another one.

Smooth installation process. No issue and completed under an hour.This thing is very, very quiet. Often had to double check on account of it in being virtually silent when you're not immediately next to it. I almost find myself missing the privacy the rumbling noise of my previous fan provided me. 🤣I wish I had taken the model with a little more power (CFM rating), but I can't say it isn't doing it's job. Cleared the bathroom of a smoke test relatively fast, and did it without noise.Get it.

Reasonably quiet and seems like good construction. Installation is tricky especially if you are replacing 50 CFM with this much larger fan unit.This one has 4inch vent and you may need 4 to 3 inch adapter. I ended up hacking it by using old vent inside this vent (remove the flapper) and filling the gaps. This does increase the noise level.There is no led power indicator. Also the screws that come with this product are too big to install easily with regular screwdrivers. Use smaller flathead screws for the 3 holes provided.Also the power compartment is flimsy and falls apart when you push wires into it.

Lots of background, skip to the bottom for the pro's and cons of this unit.I bought this to replace the old bathroom fan that was undersized by the original housebuilder. They installed a 50 cfm budget fan that was 4 sones in loudness. After 12 years the motor died and I ordered another complete unit and chucked the housing because just the replacement motor costs 5 dollars more than the whole unit? Dumb!Anyway, there was never a shower that didn't leave the mirror foggy or the walls wet. There is a slight mold along the shower wall that I would wipe with bleach but it would come back within a few weeks or so. Further research and measuring the cubic feet of the bathroom, I knew I needed to get the proper ventilation fan. So I measured the small bathroom, the Height was 8 feet, the Width was 5 feet, the Length was 6 feet. Thank God for algebra, who knew? So that was 240 cfm. (LxWxH).Fans rated for this space were well over $100 dollars. I didn't want to spend that much and I wanted to stay within the original dimensions of the budget fan which was approx. 7.5 inches x 7.25 inches. I looked on here and found this Tech Drive fan that fit the dimensions perfectly. The vent chute for the budget fan was 3", this new one was 4", so I knew I had to replace the vent to the roof, luckily the builders cut a 4" hole vent and I knew I could replace the hose.Back to the CFM, My total room was 240, this fan is rated at 80 cfm's. This means that it would take 3 minutes to exchange the air in the bathroom. So I opted to get this fan. After all, my old fan was 50 cfm so, it would take 5 minutes to do the same job. So round about, 60% more suction on the new fan compared to the budget junk I had. Ordered it and waited.Pros:1.Fit the original budget fan hole perfectly. No cutting and minimal mess.2. Waaay quieter than the original. This thing is nearly silent especially considering the old fan rated at 4 sones. This is only 1.5 sones, basically 1/3 as loud as the junk one it replaced. Who knew bathroom fans weren't supposed to sound like running garbage disposals?3. Clear instructions and removable motor, screws were also included.4. No more steamy mirrors and wet walls!5. Three year warrantyCons:1. The outlet vent is 4", original budget fans are typically 3". You will have to get in the attic and swap the original hose to outside.2. The vent outlet isn't directional, meaning make sure the flap inside CLOSES when the fan is not running and OPENS when the fan is on. If your not careful you can put it on "upside down" and it would be OPEN when off and CLOSED when on, making it not work properly.3. Vent outlet is plastic. One of the tabs that hold it in position BROKE very easily. I had to use metal tape to secure the vent hose to the housing. Not a big deal but be aware and prepared for this, if not, the moist air could end up leaking in the attic and create mold, mildew and even warp your drywall and cause wood rot.If you made it this far, you must be serious about bathroom vent fans.Just make sure that the housing is not sticking past the drywall! Flush is best but when your working alone without a ground helper, it is better to have the housing come up a 1/4" short than hang out, or else the cover will not touch against the ceiling, leaving an unsightly gap between the cover and the wall/ceiling! Unfortunately, mine stuck past the drywall, but there is NO way in he** I'm crawling up into the attic again!P.s. watch out for nails above your head when in the attic!I would absolutely recommended this fan.Good luck and God bless.