Within the past month, we have had to turn the shower/bath water dials almost all the way to hot (in both bathrooms) to get any hot water. Last week when we cleaned out hot water tank. We conneted a hose to the valve and flushed the tank for several minutes. It did not appear to have been clogged. ( The water did not run out until the water valve was shut off.) Water at the sinks does not have this problem.