Love this bathroom fan. The auto humidity sensor is great as after showering it comes on automatically and shuts off automatically. Comes with all you need to mount in your ceiling.

I love this unit. First of all, it is very quiet, especially when you are swapping out the builder grade jet engine one that is too small for your bathroom anyway. It is quiet enough that you will forget it is one. So I am planning to add a occupancy switch so that it can be turned off after 30 mins. The 80cfm move the air out of the bathroom and reduce odor and reduce humidity. This comes with a DC motor and so it draws very little wattage compared to my existing one. I am swapping all of my exhaust fans to DC motor ones from Delta this way I can use the fans more often and not worry about energy usage spike.

Installed as new fan where previously was nothing, in finished ceiling. Install not too bad, but had to bend over tabs on outside to fit it through rough opening in drywall. Totally doable, but not designed to fit through hole in drywall right out of the box.Controls seem to work well. "Auto" humidity sensing turns on once in a while, which is good since we have in a basement bath. Very quiet on auto, which is a very low speed. Quick flick of wall switch (off then back on) changes from auto to full speed. Seems you have to flick off/on again to go back to auto (or just off), wish it had a timer to return it to auto function. It is pretty quiet in both modes, but not silent in high speed. Also not load enough to cover any other sounds in a bathroom.Has an LED behind grille to help know what mode, blue in auto, orange in full speed.I'd buy again. Simple and effective.

We were starting to get a lot of condensation in our bathroom, so I decided to replace the crap Broan 50 cfm with this fan. Had to cut a new hole in the ceiling to install this larger fan (which I expected). Only issue I had installing this fan was that I thought it had a 4 inch discharge. It actually has that black fitting that is a 3 inch discharge. I ended up sticking it into a 4 inch vent hose.The fan is much more powerful (duh, 100 cfm vs. 50 cfm) and much quieter then the old Broan. No more condensation and you can actually have a conversation with the fan running. This fan is much higher quality and much less expensive than what I found at Home Depot.

This is a review and some hints how you can replace your Broan 688 fan assembly with the inside of a purchased Delta Breez Slim SLM50 in order to get a quite motor assembly without replacing the box in the attic. All work was done from down below in the bathroom.All you need in addition to the DeltaBreez SLM50 :• three 10x3.0 inch long sheet metal screws• 12inch of metallic (aluminum) duct tape• 2/16 drill bit at least 3 inch long when inserted in Power drill• Power Drill• Large Flathead screw driver• Medium Philips screedriverI came up with this solution after I replaced the week before a Broan 688 fan with a Panasonic FV-08VQ5 WhisperCeiling for one of our small bathrooms and it was more work that I had bargained for.For the first Broan replacement I had to go in the attic and shuffle 2 feet of lose blown-in isolation material to the site in order to access the old box. Removed the old box, cut a larger hole and installed the Panasonic. That all worked well and the Panasonic fan is the quietest and most powerful fans I ever had installed. However that took me all 3 hours of install, climbing in the not easy accessible attic around and then anther hour of cleanup of the mess I created in the bathroom below.So when the “Honey Do” request came to replace in the small restrooms the 50ccm fans as well I looked around what options I have to avoid to go again in the attic and eat dust and fiberglass, besides the other ones have really only head room for laying the whole time across the joists on your belly. Not a favorable outlook.So I went back to Amazon where I got the Panasonic and found a lot of not so good reviews for the Broan fan upgrade kit. The point made with the upgrade kit from Broan is that you get a new fan motor and a new designed blade set, but still keep the housing and the fan metal inside deflector. The install is easy and can be done in 20 min including cleanup. The downside is that upgrade kit is not really quieter than the one you just replaced; if at all the new Broan 688 fan still sounds more like a heavy duty turbine starting up.By chance I came up to a review on Amazon of the Delta Breeze SLM50 and it was stated it is the only replacement Fan which can use the same cutout dimensions as the older contractor grade Broan 688 so many of us got in our homes from cost cutting construction crews installed.I checked the install manual of the Delta Breez and discovered that the dimension of the outer box are the same. So if the outbox is the same then whatever is inside will fit as well.So I ordered the Delta Breeze SLM50 via Amazon and as soon it arrived I took the Delta Breez Housing apart and the inside fan and motor assembly out. The whole inside assembly of fan, motor and airflow channel is one sturdy plastic enclosure. That is the reason why it is also so much quite because the way how the air get’s channeled is engineered and so reduces the overall operational noise.So next I used the box I had pulled out the week before and removed from the Broan 688 the round metal air deflector which usually is with installed motor and fan plates there to direct the air to the outlet. That part becomes visible after you pulled down the motor of the Broan 688 by inserting the screwdriver to get the metal slot freed up.That half circular bended fan deflector is with 3 rivets connected to the walls of the old Broan 688 box. Using the a large flat screwdriver you can work that tool blade between the walls and the deflector and by gentle wiggling around and twisting the screwdriver the rivet will loosen and break lose the rivet and free up the part. Do that with each of the 3 rivets to remove the deflector.The electrical power box in the corner has also to be removed and can be pulled down quite easily. With these part removed you can already see that the Delta Breeze motor assembly will fit.Remove from the Delta Breez housing you received the Power connector they provide becauswe you want to use that connector and connect that to the power cables coming into the old Broan 688 box in your ceiling.Connect the electric plug connector you removed from the Delta Breeze housing to the Broan Box power cables. The ground is already connected so you only have to connect the connector you removed with the white and black cable. Let it hung down so that you later can connect the two connector to each other and push the cables into the corner of the housing.Next you need three 10x3.0 inch long metal screws, a power drill with a long 2/16 drill bit. The drill bit needs to be at least 3 inches long so that you can drill through the wholes provided by the new Delta Breez SLM50 motor assembly.I applied around the motor outlet aluminum metal duct tape where I removed for installing only half of the backing paper and attached it to the assembly left and right of the air flow outlet. After the motor was pushed in I was then able to remove the paper and pushed the metal duct tape with a medium Philips screwdriver against the metal housing. That created a nice seal after I also taped then the top of the air outlet with metal duct tape. That way air can only go from the moto assembly direct out to the old Broan 688 air outlet. That can maybe left out, but you maybe get then a little less efficiency and a little more possible noise level.During install I used some Foam from the Delta Breez packing material I pushed between the motor and the Broan box in place to have a temporary hold before the screws where in place and so avoided the possibility that the motor is coming crushing down on top of me while balancing on the porcelain throne below.Next I used the long drill and drilled with the motor in place the three 2/16 holes. Take the 3 inch long sheet metal screw and attach the new fan/ motor assembly via the holes in the plastic at the side of the housing in place. If you use larger then size 10 screws you need to enlarge the pre-drilled holes at the motor assembly . I also used a flashlight to see if I get the screw aligned with the drilled hole and then hand tighten each screw, the flashlight was very helpful.Next remove the 2 foam blocks you may be used as I did to temporary wretched the motor into the housing.Add additional Metal duct tape on top of the airflow outlet which connects to the Broan 688 outlet.Now push the Power cables all in the corner and then test the motor. The motor is really quite, but not as quite as the Panasonic. It is most likely double the noise of the Panasonic which is rated with Congratulate yourself that you did this in 1 hour and that you did not had to go into the attic at all and the mess in the bathroom is minimal.Should the motor ever fail it will easy be removed by removing the three metal screws holding it in place and then disconnect the power connector.