Water Heater does not heat all 6 gallons
I have a 6 gallon Suburban water heater, on the last trip we ran out of hot water much quicker than usual. When we got home I ran the water heater, made sure it was nice and hot, then measured 3.5 ...
Forum Discussion
I'm not sure about the design of RV water heaters, but I know about residential ones, which are designed to draw in the cold water at the bottom of the tank in a way to minimize the mixing. This is why those tanks switch from hot to cold so quickly when they run out of hot water.
Since the cold in line comes in from the top of the tank there is an internal cold pipe clear to the bottom of the tank. As I recall looking at the tank in my TT, the cold line enters the tank at the bottom. If there is just enough crud built up to deflect the cold upward in the tank, it'd mix with the hot pretty early in the process, so it might not take all that much crud to cause this, if shaped and located just right.
Since the cold in line comes in from the top of the tank there is an internal cold pipe clear to the bottom of the tank. As I recall looking at the tank in my TT, the cold line enters the tank at the bottom. If there is just enough crud built up to deflect the cold upward in the tank, it'd mix with the hot pretty early in the process, so it might not take all that much crud to cause this, if shaped and located just right.
