(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 3 of 3

Thread: Single handle Grohe shower valve

Hybrid View

  1. #1
    DIY Junior Member scaasi's Avatar
    Join Date
    Jan 2013

    Default Single handle Grohe shower valve

    Hello, I am trying to figure out what I'm hoping is an adjustment issue--I had my bathroom remodeled about 3 years ago. We installed a single handle Grohe valve (I'm not sure what the model number is), which worked really well.

    Lately, water temp feels great at first, but then within a minute or so, it gets cooler. I then adjust to hotter settings, only it feels cooler a minute later again. Within about 10min, I'd be really close to the limiter safety knob.

    I have a new GE 75 Gallon heater and I shower about 2 hrs after my kids, so there's really no way it's a water heater issue.

    I'd really appreciate your help and suggestions.
    Thank you.


  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    Could it simply be that as you run the shower longer, which runs both hot and cold to the valve, since it's so awfully cold in Chicago this week, you need more hot water to compensate as the cold gets colder? This is one reason I like thermostatically controlled valves...as long as you have actual hot water, it maintains your desired setting, regardless of the cold's temp or the hot's.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Cave Creek, Arizona


    Do you have a hot water recirculation system, because that is a symptom of a "defective" one.
    Licensed residential and commercial plumber

Similar Threads

  1. Can't pry off Grohe single handle!
    By Swampbox29 in forum Shower & bathtub Forum & Blog
    Replies: 1
    Last Post: 12-21-2012, 09:38 AM
  2. Delta 600 up/down single handle shower valve?
    By Kognyto in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 14
    Last Post: 10-10-2011, 02:33 PM
  3. Grohe Single-handle intermittent leak
    By cn90 in forum Shower & bathtub Forum & Blog
    Replies: 3
    Last Post: 12-20-2010, 06:53 PM
  4. Leaky washerless single handle shower valve... help!
    By shuuy in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 2
    Last Post: 06-18-2009, 08:10 AM
  5. Moen single handle tub/shower valve
    By marichpt in forum Shower & bathtub Forum & Blog
    Replies: 3
    Last Post: 10-31-2005, 05:19 AM

Tags for this Thread


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts