Greetings. I can't seem to find an answer to this problem.
In the shower, regulating the temperature is an issue. Turn on the hot water, fine. Turn on the cold to balance the temperature, and the slightest turn of the cold-water valve gives us flat-out cold water; can't feel the hot at all. We're only turning the cold water valve less than a quarter turn. To get a balanced temperature (tolerable enough to actually take a shower) we have to turn the cold water valve toward "off" in 1/16-inch increments to get a good temperature. Even a
1/8-inch turn in either direction changes the temperature drastically. Once there's a balance, the water slowly gets hotter, necessitating that 1/16 adjustment to recapture the desired temperature. And when finished, turning the cold-water valve off shows that it's barely cracked open at all.Happens to a lesser degree in the tub (different bathroom, other side of the house). Faucets in house don't exhibit the problem. Recently had a new hot-water heater installed, but can't see how that would cause this (neither can the plumber who installed it, who's competent and trustworthy). In the shower, he's replaced the washers, seals, and stems in an attempt to figure out what's wrong. No effect.
Anyone got any suggestions?
Thanks