Lately my hot water cools down before I'm finished showering. It never used to do this. Wondering if it is a symptom of a fading element. The heater is a 30gal Ruud Pacemaker Ruudglass but can only estimate age to be approx. 30yrs. A tankless heater will be its replacement. Is it time?? Bill
If you got 30 years out of an electric water heater, you got your money's worth. It is time. I don't know about an electric tankless as a replacement though, I'd probably stick with something similar to what you have
Assuming you have an electric water heater, yes. Failure of the lower element can lead to limited hot water quantity. Failure of the upper element can lead to long recovery times. If you aren't up to checking the element continuity yourself, you can have a plumber stop by.
Not if you are concerned about economics and performance. The most inexpensive solution will be to replace the heater with a modern unit.
I wanted tankless to replace mine. You need a big power feed to do it. If you replace with another regular one, get a good one, put a catch pan, an earthquake strap, use flex hoses with threaded connectors, and put a blanket. The savings will pile up.
Electric? probably one of 2 bad elements or just a bad thermostat, there are 2. Can you go gas its usualy 20-50% cheaper to run, an electric tankless big enough for a house may need its own 100+ amp circuit and special wiring. Did you try adjustng the upper and lower thermostat or test it with a meter
Good advice, I will add to be sure if you are going to drain the WH, don't have the power on when the elements are not submerged, this will kill them in short order.
Just make sure you have a "cap" that fits the thread on the valve to seal it off if it doesn't close properly. And if it doesn't - don't try to REPLACE the leaking valve - just get fittings to put a second valve in series with the defective one. Attempting to remove the original drain valve UWSUALLY proved futile.
When I drain sediment from a water heater I GENERALLY use a garden hose to direct the sediment/water either to a drain or outside - so a small leak when shut off can be temorarily dealt with by sticking the end of the hose down the drain.
I have nasty water and scale is a regular thing. I figured out on about my second water heater that the drain valve they use will screw up right away and probably won't pass the big chunks anyway. I put in a short 3/4" pipe nipple and a gate valve before I even installed the next new one. You screw in a 3/4 to hose adapter on the output side. A gate valve opens to the full pipe size and you can take it apart easily if it cruds up, but that hasn't happened.
I've read of recommendations for changing the drain valve to a metal one, but I have also heard that the valves can be difficult to impossible to remove after the unit has any age on it. If the valve stem breaks off, can the remaining fragments be coaxed out, or is the water heater toast?
I managed to get the valve out of my old one but I think I was just lucky. I put in a nipple and gate valve in a brand new one last time. If your old valve is leaking you can just get a hose thread cap for it.
I prefer a ball valve over a gate valve. It seems that every gate valve I've ever come across will leak. On every hot water circulating system I've ever repaired or installed, I will use ball valves.
My situation on a 12yo tank (after consulting here and getting some good advice!):
Both heater elements checked good on a meter (about 13ohms across terminals, nothing between terminals and tank)
Lower element jammed in solid; even with something like 6' of breaker bar on it, it still wouldn't come out.
Tank very badly silted up; lower element completely buried.
Lower thermostat showing severe signs of overheating (to the point that contacts were sticking). Presumably due to lower element running almost constantly and never tripping the thermostat, but just creating a local hot spot on the tank body.
... the thing was, the drain valve is a completely stupid design that just can't allow larger bits of sediment out - so with it fully open clear water would come out even if there was a whole pile of sediment in there. Looking at new designs, they seem to be no different, so are prone to gradual build-up in the same way.
Anyway, I pulled the upper element (that one would come out) and could then get a bent bit of bar inside to dislodge sediment from above. I took the drain valve (just the handle and valve stem, not the body) off and could then get a bit of bar inside that way and drag sediment out. With some poking around (and a lot of patience) I got a few buckets worth of sediment out of the thing.
It's been working fine ever since (after replacing the lower thermostat) - but one day that lower element will die and then it'll be new tank time because there's no way I can replace it.
If the OP has a couple of hours to kill then they might try the same - but I'd question how close a 30yo tank is to just rusting out anyway...
This seems to be typical of all water heaters; even the ones that have good brass-bodied valves use simple stop valves and not ball or gate valves which would be far preferable. IMHO the one mod that should be done to every water heater (if there's still time) is to replace the stock drain valve with a 3/4" threaded ball valve, a dielectric nipple, and a 3/4 MPT to male garden hose adapter. With a brass cap on it just for insurance. Otherwise you're wasting your time trying to drain out sediment (you just won't get enough flow, and the bigger chunks won't pass) and you run the real risk of having the valve fail open.
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