Sr. apt. bldg. is only 4 years old.
When I moved in almost 3 yrs ago, no one had ever lived in the apt. From the beginning I had the problem that when taking a shower the water would turn cold on me. Talked to the maintenance man who just gave me a long look. Contacted manufacturer. They suggested to hire a licensed plumber the management company refused to do (in order to save money).
Thermostats have only three (3) settings: A, B, C. They are set on B. At times the water will be scalding hot, kitchen and bathroom sinks, but not the shower. What's the problem??