We have a gas water heater, the tank kind, and for some reason maybe
one day a week for my morning shower I have to turn the dial as far as
it goes to the hot side just to get a decent hot shower. I couldn't
get burned by it if I wanted to. We haven't been using any hot water
while we sleep so it can't be that there is not enough hot water in
the tank. Then most other days it works fine and I could be scalded
if I put it all the way to hot. I don't believe it's the plumbing in
the shower I use because it can sometimes happen in our other shower.
Any thoughts? It's a tank water heater and we live in a single house.
You need to check the temp coming out of the hot water tank. Try a
faucet close to the tank first thing in the morning. If the water is
not hot enough and it is turned up all the way then you have a gas
control valve problem in the tank. They are non-repairable. You can
buy a new control valve but if you are not familiar with gas you might
want to have it done by a professional. If you have to used a
professional then you also want to consider the age of the watre
heater and compare fixing it to the cost of replacing. The valves are
usually between 50 and 100 but the service costs might not be all that
much different form replacing the whole thing. The normal life
expectancy is between 10 and 15 years.
If the problem really is that you run out of hot water too soon , it
starts out really hot but cools down quickly, that is usually the
inlet tube inside the water heater. They are plastic and sometimes
detriorate. It's any easy replacement if you have enough head room
over the tank to geta new one in.
Our gas h2o heater is 40 gal and provides plenty hot water. How old is
your heater ? Turning the dial is a good clue. Do you drain your heater
once in awhile ?
We had a 56 gal electric which did not do what the 40 gal gas does.
I've gone thru I guess 5 or 6 heaters in 40 years this with Hard heavy
Iron with not filters till 2 years ago. Ours just ran till they leaked.
Aside I just stored the old ones in the basement as they were heavy.
Township would not take them away till I got green stickers for them EG
inspected. I was good to go except new plastic pipe no longer copper
required a lower relief valve.
Bill S. Jersey USA zone 5 shade garden
What you might try is getting the control from an old tank from a bone
pile of them somewhere and change it out. I won't waste money on a new
one unless the tank is like new. Unhook the gas lines, get a big ass
pipe wrench and if you can get the old one out without tearing up the
tank, put the new old one in hook up the gas and give it a try.
Here ya go, a good video of what to do, if you want to, be ready to
buy a new tank......
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