The first five or six months in our new home, whenever we took a shower or washed dishes or whatever, the water heater (gas) would click on for about ten minutes or so, in three minute intervals. More and more lately, over the last few months, its been clicking on for maybe ten minutes but in more and more erratic intervals, like sometimes a short
20 second interval, and then like a 2 minute one, and then 6 - 15 second intervals in a row. Really weird. We've tried messing around with the temperature a bit but it doesn't seem to affect it. Any ideas?