Hi everyone. Thanks for any help in advance. I moved into my house about a year and everything worked fine. The last couple of days I've been unable to get really hot water in our master bath. The shower, sink, and tub all get warm but not hot. Warm enough to shower but just barely. The hot water tank is fine as the rest of the house has properly hot water. I suspect a thermostatic mixing valve, but the problem is there isn't one in the mechanical room near the tank, and everything else in the house is drywalled so I fear there my be one buried in a wall or under a floor. But this seems stupid and I'd have thought against code. Anybody have any suggestions of what else it could be or where to look if I'm on the right track.
Cheers
Cheers