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We moved into our house shortly after the previous owners installed this faucet:

Picture of Grohe 33755 KDO faucet

We've had it for about 5 years now and the water flow is severely limited. Also, it takes forever for the hot water, but when I remove the faucet head it seems normal. I was just going to replace the faucet head, but a new one is $200. There's no instructions or documentation for the faucet, so I don't know if I'm supposed to be cleaning out the faucet head.

Can somebody either advise what I can do, or tell me where I can find some documentation online? I checked Grohe's site but I can't find this specific model.

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Many high end faucets like these have a lifetime warranty. Does yours? Did you call customer service? –  BrianK Jan 31 '11 at 2:52
    
Only 5 year warranty, and they require proof of purchase date which we do not have. –  Mike Cole Jan 31 '11 at 3:56

2 Answers 2

up vote 2 down vote accepted

Try removing, disassembling (take notes!), and soaking the faucet head in a mix of hot water and vinegar (50/50) for a short while (e.g. an hour or two), to help remove any tap water mineral deposits that may have made their way into the head of your faucet and that are restricting your water flow.

Faucet heads typically have very fine passages and/or aerator mesh, and it's not uncommon for a build-up of tap water mineral deposits to cause water flow problem over time. I've experienced this first hand, and a good vinegar soak did the trick.

Best of luck.

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It's the disassembling of the faucet head that I'm struggling with. I can't figure out how to do it! –  Mike Cole Jan 31 '11 at 1:22
    
@MikeC Aha, I see. Even if you can't disassemble it, give it a good soak, perhaps for longer (overnight?), and repeat if necessary. Shake it around in the vinegar container to make sure the solution gets into the right places. If you're lucky, the vinegar may de-mineralize the head sufficiently so that the next time you run water through it, the small pieces of gunk get washed out. –  Chris W. Rea Jan 31 '11 at 1:31
    
I have them soaking now. I'm trying to disassemble the head as much as possible. –  Mike Cole Jan 31 '11 at 1:35
    
This did the trick! I've soaked it before, but opening it up really got the gunk out. –  Mike Cole Jan 31 '11 at 3:57
    
@MikeC Great- glad to hear it! –  Chris W. Rea Jan 31 '11 at 14:21

Here's a link to the specifications page for your faucet. And here's the installation instructions for the 33758 model, which looks very similar to yours, enough that the maintenance instructions might be the same.

EDIT: I found the installation instructions for the 33755.

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Thanks, this led me to learning that the spray end of the faucet head could be removed. Still poking around, but I think I'm on the right track. –  Mike Cole Jan 31 '11 at 1:34

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