Just moved into a house and we just replaced the hot water heater thinking it was the reason we couldn’t get two showers in. We went from a 40 gallon to a 50 gallon. The problem is sometimes we can get enough hot water for the two showers, sometimes we can’t get enough for one and most of the time we can get hot water for a few minutes and then the temp. will need to be turned up for more hot water. Any ideas?
You know the problem is not the water heater cause you changed it and still have the same problem.Is your shower faucet a one handle or two handle?You might also have a thermostatically controled faucet and it is bad .Could be a pressure balanced faucet also that is bad.