I have a Kenmore series 8, gas, hot water heater, model #153.331451. Up until recently it has worked fine. Two people could bathe and both have enough hot water for their bath. Now, I can shower and within minutes the water temp needs to me adjusted and in no time the hot water is gone though the temp dial on the tank is turned all the way up. I drained the tank within the last year so I wouldn't think it's sediment? I have read about the the temp control valve possibly being bad but how do I know for sure? Any info would be very helpful.
Thanks from a man with a wife, a son and two daughters who LOVE hot water. Lol