I offer this pro tip... I had the predecessor to this unit the Moen I/O. And, after 9 years, the valve unit failed. Called Moen. Buy it for looks, buy it for life? Yeah, well, the life of the technology maybe. Moen discontinued the I/O series and, guess what, stopped supporting it. No valve or parts available. Now, if I had followed the directions and just run the control wire through the studs, I'd be screwed at this point. However, I'm a son of an engineer and I thought ahead. I ran the control wire through conduit and left a fish rope in the conduit. Yeah that was fortunate to say the least. So, I pulled a new wire for the U by Moen, had to re-do the plumbing, but got the thing in. Works. Run your control wire through conduit folks!

Moen: some feedback on the installation process. You clearly intended this to be used with PEX water lines - this video shows the adapters. But somewhere between design and installation, there was a breakdown. I just finished installing the 2 outlet valve, but I'm confident the 4 outlet has the same problem. The connectors you include in the kit require an adapter to be sweated on before the PEX can be connected. The retainer ring that holds the metal connector on is plastic. Sweating the adapter on requires high heat - hot enough to create solder flow. Plastic melts, so the ring can't be left on while soldering. The retainer ring doesn't fit over the PEX adapter after the adapter is soldered. At least none of the 3 brands my local home improvement big box store carries. End result - there's no way to install this unit with PEX lines unless you do something not covered in the installation manual. Something involving a grinder (to slim down the adapter) and a dremel (to widen the hole in the retainer ring). Something I'm sure your design people would frown over, but there's absolutely no other choice, given the items included in the box. The solution is simple, just machine the brass connectors to end with a PEX connector. Problem solved. I'm guessing you're going to wind up with some torqued off plumbers, and higher returns than you expected.

Please keep in mind that the push notifications in the app, when your shower is ready, is only for advertisement purposes only. The push notifications have not implemented and are not in the final customer released products as Moen stresses that they are. Moen said that it would be in future releases but have not release it as of Sept 2020. Keep in mind the product has been out a few years now with push notifications as a feature.

This is a Great system for those multi head installations This is at time faster than conventional valving

Make sure user is aware of the need for a large access panel.

I recommend if you're going to install the battery backup, put it OUTSIDE the wall, not inside, otherwise it becomes a 30 minute chore to change the batteries rather than a 5 minute quick job.

Couple questions, how does the copper cap connect to the plastic piece in order to cap it off? Also the battery backup is meant for a power outage of several days? Well if you don’t have power you won’t have hot water and if on a well you won’t have water either.

I am in the process of a renovation. Got to the installation and find the hot and cold valves are reversed on this unit. WHY would Moen do that. My renovation just came to a screeching stop. Hot water on the right? REALLY? Look at this video. Hot is on the left from the back.

I want to install my 4 valve in the horizontal position between the floor joists below the shower, in the mechanical room. The wall behind my shower is a finished custom closet, no war to create an access panel. Will water pressure be enough from valve mounted position below the floor? One of the valves will travel to a ceiling mounted rain shower head. Checking to see if this will still have enough pressure to supply to the rainshower head...12 ft if pipe.

Question, is there a bypass valve in case anything goes wrong with the system which will revert the shower to a manual shower?

I noticed the valve inlets and outlets are slightly tapered on the ends. Can a Sharkbite fitting be used directly on the valve to transition to PEX?

I feel confused about where to install the controller? What is the maximum distance between the controller and valve? We'd like the controller to be outisde of the shower, on a wall next to the shower door. It's on the same wall as the valve, but I'd like to know the recommended (and maximum) distance between the two.

they didnt mention the hammer arrestors needed on quick closing valves.

So no tips on soldering the tiny brass nipple with the plastic threaded ring in place? Since it wont fit over the pex adapter...

It should be possible to hook up to a 12v source permanently instead of the regular outlet? Or does it need regular hookup for something? Since my van build is all 12v this would be perfect

Since the controller cannot adjust the water pressure, is it possible to install a manual control in the shower to increase or decrease water pressure?

So what if I’m using cpvc could I take the black plastic nut off and use adapters on the threaded plastic ?

Hello, Moen team! Can pex adapters be attached by using pro press instead of soldering?

if yours stops working and has lines on the display screen, take it off the mount, and unplug the data cable then plug it back in and it'll work

Is it possible to install more than one controller to one valve unit? For example: one controller outside of the shower, and one controller inside the shower.

Very informative

What do I do when the gfi outlet trips and it’s buried in the wall so I don’t have access to it?

Having trouble with this. Panel won’t power up, gfi outlet is fine, grinder plugged into it and turned on, everything seems fine and in its place, just don’t get power when connecting adapter cord to power cord panel doesn’t power on at all. 🤷🏼‍♂️

Can this be installed in an attic space above a shower?

I thought u weren’t suppose to put a outlet or plug inside a wall, and what if the gfi trips how do you reset it…..

For the battery backup do you need to change the installed batterys after a certain amount of time?

Can I add the Moen U to my existing shower head .

Temperature control is not working. It runs at constant temperature . Double checked it gets both hot and cold water 😒

Hello Moen team, so I'm guessing I don't need an actual boiler with this system since it heats the water itself via AC instead of gas right?

we don't have to use this controller right? We can just use the Android tablet already in the shower?

What happens when the GFI trips?

Please Note: When pulling a data cable, power cable or the like, NEVER FOLLOW THE EXAMPLE 6:22 illustrated in this video. ALWAYS grasp the data or power cable plug by the body of the plug. The life of the cable is shortened and, in the instance of the line voltage cable, a fire may occur causing loss of life and property damage.

Can this shower be hacked?

After only a little over 1 year, my customers control box started leaking internally. Please be aware this product is not made very well. Looks like I will be replacing it and definitely not recommending to any other customers.