Burner operation and recovery rate are fine. It's just that when the tank sits unused for awhile the temp drifts down and the burner doesn't kick on until the water gets way cooler than you want. It's like the bimetal contol is just way to insensitive.
So the first shower in the morning is cool but that gets the burner to start and then the second and third showers are fine. When I come down in the AM I open the hot faucet and run the water off until I hear the whoosh of the burner lighting. Then it heats up while I have breakfast and I get a hot shower.
A couple years ago Sears was selling some models that had self-powered Honeywell digital controls that supposedly had upper and lower temp detectors for better temp control. I don't think they have the same ones now. Lowes has a Whirlpool model with some sort of electronic control. I was wondering if these are a better alternative to the old bi-metal t-stats... or if my bi-metal t-stat is just an outlier and that most work better?
Originally Posted by biggles
city water comes in at 55F during the first shower and mixes with the balance of the tank those controls are very generic bi metal..did you flush the bottom of it out minerals and rust at the base....the brands are mostly made from the same group of producers and they stick there labels on them...A O Smith thru Sears.the recovery rate is what your concerned with but don't expect big advances...hot water heaters maintain hot water don't supply it on a flow demand...might think about those inline recovery types you mount on the wall.