Hi- I have a 40 gal. A.O Smith gas water heater that is 12.5 years old.
If I take a shower, I notice a continued whoosing sound and a sound as if a couple marbles are rolling around. This lasts about 25-30 minutes. I do have hot water.
The only repair ever done was 4.5 years ago. Back in June 2010, a plumber drained it and he replaced the anode rod. The old rod was thinned down and he replaced it.
What does this mean? Does the noise just mean there is sediment build up or does it mean I'm about due for a replacement? Can anyone tell when a water heater is near the end?
If I take a shower, I notice a continued whoosing sound and a sound as if a couple marbles are rolling around. This lasts about 25-30 minutes. I do have hot water.
The only repair ever done was 4.5 years ago. Back in June 2010, a plumber drained it and he replaced the anode rod. The old rod was thinned down and he replaced it.
What does this mean? Does the noise just mean there is sediment build up or does it mean I'm about due for a replacement? Can anyone tell when a water heater is near the end?