very complex and still leaking
347377
absolutely not user friendly and not very clear instructions, took nearly a hour of careful reading and trying to follow the steps and still it leaked when you open up the shower.
2301690
The first one I got had a bad temperature sensor and only showed the blue color. The second one is leaking internally. You also need a special plumber adapter if you live in the U.S. and have 1/2" water connections like I do. But, the hardware supply only had compression adapters which are too small for the 3/8" hose connections from this faucet. So, I found the right plumber adapter here one Amazon. Then, you have to drill a hole behind your sink to put in a screw to hang the battery pack, because the wires from the faucet are so short. Try screwing in a screw behind your basin. It is a nightmare. Then, I had to grind my center sink hole because this thing needs a larger hold and I had to grind back my new cover plate too, to accommodate it. And this thing is really loud. After all the investment that I have in this thing, time and money, hopefully the third one will work properly. I definitely wouldn't recommend this item. I'll update if the third one is defective too. I must have installed the first one right, because it didn't leak anywhere, but the temperature sensor was obviously defective. I've also installed glass shower doors and a waterfall shower. So, I am no amateur installer, and from my installation description, you can see that I know what I am doing. Nothing that I've installed have I had such a nightmare as this color changing waterfall sink. My bathroom is a mess, for two weeks now, and now I have to wait for a third one to clean it up. You have to use plumbers tape for any installation of this type. You also need plumbers putty so that water won't run under your sink from the holes in case you get water on your basin. This thing is an absolute nightmare.

Update: The third one seems to work and it doesn't appear to be leaking internally, although my bathroom was a mess for over a month. You can also reduce the water level at the mains to reduce the faucet noise.
3915596
I've been through at least three Pur filter units in the past few years, the most recent being the FM-3700B. It's a total disaster, worse than the previous units. Supposedly its merit was that it attached to the faucet via a click-on system, but that is its chief defect. It leaks and sprays water all over the place, even with the replacement adapters the company sent me after I complained on the Internet. The present unit also leaks/drips water from other places, which makes me wonder whether these added drops are filtered or unfiltered. I have no way of avoiding them. Bottom line #1: whoever designed this unit should be sent back to the asylum  permanently. Bottom line #2: whoever is manufacturing these units should be sent back to building manure spreaders. Bottom line #3: DON'T BUY THESE THINGS until the company cleans up the design and the manufacturing quality control.
4846067
My husband and I purchased this canister filter for our 55g tank 6 months ago. The instructions were basically useless, but with the help of a youtube video we were able to get everything set up.

This week, we awoke to a massive pile of water on the floor of our kitchen. Overnight, the filter had begun to leak out of the seal between the top and the body. Now, anytime it is running, it is constantly leaking water.

Sure, the price is cheap, but so is the unit.
1949711
I'm not sure why this product gets such a high rating.  Like a bunch of others, I cannot get water out easily.  It's not the rubber valve as others have suggested.  Even without the valve, it is extremely hard to get water out.  The main problem is that a vacuum is created while drinking and so you are constantly fighting the vacuum or having to drink really small amounts at a time.  It comperable to one of those little hamster watering spouts.  I bought 10 of these in an effort to standardize all of my kids' water bottles.  We can't return them as too much time had passed before we started using them and realized there was a problem.  I've taken a drill to the lid on several of them in an effort to solve the vacuum issue.  They are usable now, but leak.
2332836
It leaks all over.  I tried everything.  I ran it and it just kept leaking constantly.  I installed the shampoo tank five different times.

I'd like a unit that works.
4511406
I don't know how the product is but it is so hard to fix...the screw is not fixing at all and even the screw that has to get attached with the filter is not able to fit properly....three men have tried and water is still leaking from it ......I am not yet able to fix it been 2 weeks now,
896146
It will end up leaking No matter what you do, would look for a different tee fitting if you can
1499196
I bought it in February and it now has a leak.  I can't even figure out how to call support to get a new one!!!
4547111
<div id="video-block-R17ADTF4N8ZQLV" class="a-section a-spacing-small a-spacing-top-mini video-block"></div><input type="hidden" name="" value="https://images-na.ssl-images-amazon.com/images/I/91R9nElkcoS.mp4" class="video-url"><input type="hidden" name="" value="https://images-na.ssl-images-amazon.com/images/I/91LmSMxTFnS.png" class="video-slate-img-url">&nbsp;Leaked all over my floor and ruined my floor overnight!!!  Whoever was the designer who thought it was a good idea to put a v-shape where water could leak out needs to be fired!  There was no way to make this thing stop leaking!!  I tightened the water stopper as tightly as humanly possible and still it kept leaking.  What a terrible experience.  DO NOT BUY
4316125
I ordered it it came in 2 days! It is gorgeous! Heavy well constructed. it was installed on the 9th and OMG it leaked and gushed from the center everywhere! WE took it all apart and due to construction and no light after dark tried it again the next day and tightened it. Still leaked terribly!  Im so upset and disappointed. I gave it a 2 because its gorgeous only.
4836972
The unit leaked all over. Something's wrong with it
2145611
Very, VERY hard to change filter & not have the d*mn thing leak like a sieve afterwards.  The design is much worse than the (slightly) smaller pump we use to have.  Problem is the inner seal system simply doesn't work. While water is gushing up you have to seat the grey inner cap, then the black gasket ring, then the outer circle.  You can't fit the ring into the outer collar, either, and it invariably pops out when you unscrew the collar.

The ring NEVER seats right - and if you think a slooowww drip can't empty a 10' pool, think again.  We lost 4" in 2 days so we refilled & put the cover on. Didn't help, still lost inches a day until we realized it wasn't evaporation, it was the pump drip-drip-dripping.  Took 7 tries to seat that gasket get it to stop. (Meanwhile, you've got water gushing up out of the pump. Got it to stop finally, but remember, you have to change filters every 2 weeks - so you get to fight the bad design every time.  We finally hit on putting plastic wrap over the ports for the filter in/out which made things a bit more manageable.  The in-port was easy - water pressure held it on.  The return we rubber-banded plastic over it to stop the gushing.

Whoever thought up this moronic design was a sadist.  If you need a pump, this ain't it.  It may pump water fine, but the cost of water loss coupled with the frustration every 2 weeks is pretty high.
636703
I like the product type however it leaks and I am having trouble replacing the item.
606126
This product is too difficult for the do-it-yourself. It takes special ventilation to apply and has a reputation of peeling in the future and clogging up drains. I wish I could return it. I was not permitted to do so even though the box has never been open. If it is hazardous to return, it should be too hazardous to deliver.
4390516
Leaks, Leaks, Leaks, Leaks, Leaks, Leaks looking for something to control this crazy weather were having from flooding the backyard. I even put hose clamps on and it still leaked. Would have put some goop inside but the idea was to be able to disconnect  when i needed to?  Save your money.
4486154
I wanted to like this because I had the previous model. I leaks everywhere. I have no idea where I'm missing a seal. I used this a total of 6 times and it just leaks everywhere. I loath it and really wanted to like it.