barbap
New Member
Hi! We recently had a Kohler Mastershower 3/4" Thermostatic Valve installed (K-2975-KS), and upon testing, we could only get hot water -- switching to cold only gave us lukewarm 104 degree water. The service stops are definitely turned on, and we don't have water pressure issues. I called up Kohler and they sent me a replacement cartridge, and that didn't change a thing.
Kohler then told me that these thermostatic valves do not ever allow cold water! That water is always tempered to be 80% hot / 20% cold! Nowhere in any online description, spec sheet, or manual does it say this -- and Kohler could not produce any documentation for me. I feel lied to, and certainly would have bought a different valve if I had known that cold water was impossible to deliver. The valve wasn't cheap, and neither was install.
I called up salespeople in Kohler stores and counters at plumbing supply shops, and none of them had ever heard of this issue. I Googled online and found only one person in a review complaining about not getting pure cold water. Terry Love pros, with all of your wisdom, could you tell me whether tempered water coming from a thermostatic valve is standard? Can something be calibrated to get this valve to produce cold water?
Kohler then told me that these thermostatic valves do not ever allow cold water! That water is always tempered to be 80% hot / 20% cold! Nowhere in any online description, spec sheet, or manual does it say this -- and Kohler could not produce any documentation for me. I feel lied to, and certainly would have bought a different valve if I had known that cold water was impossible to deliver. The valve wasn't cheap, and neither was install.
I called up salespeople in Kohler stores and counters at plumbing supply shops, and none of them had ever heard of this issue. I Googled online and found only one person in a review complaining about not getting pure cold water. Terry Love pros, with all of your wisdom, could you tell me whether tempered water coming from a thermostatic valve is standard? Can something be calibrated to get this valve to produce cold water?