I have a four-year-old gas water heater that is acting a little strange. Beginning a couple of years ago I noticed that once every couple of months I'd be the first to take a shower but the water wouldn't be very hot. In fact, I could turn the mixing valve all the way to hot and it still wouldn't be hot enough for my tastes. The next day it would be back to normal.
Fast forward to now and the problem is occurring more often. I have the temp set at "A", which I think is 130 degrees, and the water still isn't nearly hot enough. It certainly isn't as hot as it usually is. I should not be able to stand in the shower with it all the way on hot without being extremely uncomfortable.
Any idea what the problem could be? I'm obviously a newbie with this stuff so be gentle. :)
Many thanks, John