Shower water temp does not regulate very well anymore Home › Forums › Public Forums › General Plumbing › Shower water temp does not regulate very well anymore This topic has 1 reply, 2 voices, and was last updated 23 years, 2 months ago by Retired plbg1. Viewing 1 reply thread Author Posts 30 Jul 2003 at 1:10 am #276801 James L. VanceMember The plumbing and house are about 12 years old. One of the two showers has a single handle system with the hot/cold on it. Tonight its almost all hot water, if you put it almost completely on cold its acceptable. Where do I start. 30 Jul 2003 at 4:57 pm #294812 Retired plbg1Participant Sounds like you have some odsruction in the valve, take aprt and replace parts and gaskets. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In