I love this site, and would appreciate any ideas you may have.
My Reliance water heater (from Lowes, 7-10 years old, and used in a rental
mobile home) needs to have the reset button pressed each day in order to fu
I asked at a good plumbing outfit whether it might make sense to replace th
e heating elements, thinking that the elements might cause increased resist
ance if corroded. The man said that with any sort of problem with a heater
that age, it is better just to replace the heater.
He suggested Bradford White, Rheem, and A.O. Smith as good quality heaters,
but they are pricey.
Still, I have heard that elements wear out and need to be replaced periodic
ally, and so I wonder whether that or something else might be worth a try b
efore buying a new heater.
Thanks in advance!
On 9/15/2013 2:32 PM, email@example.com wrote:
Assuming that by reset, you are referring to the red button on the
thermostat and not a circuit breaker. This is a temperature sensor,
which kills power if it overheats. IMO the most likely cause for this
happening is a defective lower thermostat, but if you are going to
replace that one, you may as well replace the upper as well. Before I
replaced anything, I would do a thorough inspection of the tank. I agree
with the plumbing outfit, at that age it probably makes more sense to
get a new unit.
If the resistance increaces, they will heat less and not trip the overload.
They might have internal shorts that decreace the resistance.
They may also develope holes in them and let the internal resistance
elements contact the water creating a high resistnce short.
If you had an ohmmeter you could cut the power to the heater and see if
there is any resistance to ground.
Sometimes if the elements develope leaks, the water will get very hot.
On Sunday, September 15, 2013 3:38:56 PM UTC-4, firstname.lastname@example.org wrote:
al mobile home) needs to have the reset button pressed each day in order to
the heating elements, thinking that the elements might cause increased res
istance if corroded. The man said that with any sort of problem with a heat
er that age, it is better just to replace the heater.
rs, but they are pricey.
dically, and so I wonder whether that or something else might be worth a tr
y before buying a new heater.
And I wouldn't be so quick to replace the WH either. With
gas ones, 10 years or so and I would agree. But with electric,
they tend to last much longer. But it all depends on water.
If you have some history as to how fast they tend to go in
your area with your water, etc that could be a help in determining
it's expected life.
But I guess it also depends on if you can fix it yourself too.
If you can, then you may be able to fix it for $25. If it
requires a pro and it's gonna cost $150, then I guess it starts
to push the balance more in favor of replacement.
On Sunday, September 15, 2013 5:39:52 PM UTC-4, email@example.com wrote:
ntal mobile home) needs to have the reset button pressed each day in order
ce the heating elements, thinking that the elements might cause increased r
esistance if corroded. The man said that with any sort of problem with a he
ater that age, it is better just to replace the heater.
ters, but they are pricey.
iodically, and so I wonder whether that or something else might be worth a
try before buying a new heater.
I would also take this opportunity to check the over temperature pressure r
elief valve, make sure if is not corroded and stuck closed. . If you have
a bad thermostat, then the overheat reset button and the TPS valve are you
r second and third defense against an explosion. If the reset should also
fail, you are down to one.
On Sun, 15 Sep 2013 11:32:06 -0700 (PDT), firstname.lastname@example.org
My house came with AOSmith and I wanted the replacement to have the
input and output pipes in the same place. Sears had that. I suspect
AOSmith makes their wh's.
I'm not at all recommending you replace the WH, but whenever you do,
espeically if you buy the same one or the same brand you have now, you
should remove and save the old thermostats and heating elements,
except whatever is identified as bad. . Then when you suspect one is
bad, you can just replace it with an old one. AFAIK thermostats have
stayed the same for 35+ years, maybe two different styles for most
wh's, one per brand. Heating elements stay the same for the same size
wh by the same maker, and probably beyond that.
You can replace a heating element by turning off the electricity,
disconnecting the wires to the element, and unscrewing the element.
Pull it out and lickety-split put the other one in. No need to drain
the WH. When I did this only a couple teaspoons of water escaped.
(The sales guy at the independent store where they sold AOSmith told
me this. At the time, I thought I had to buy an element from the
company that made the WH, but it was a cheap repair anyhow compared to
paying someone, and I got this good free information.)
drain the tank, then remove the heaters........
the tank may be full of sludge, covering the bottom heater which can cause it to overheat.
if you dont want to replace the tank then take a look inside...
in some water areas they will fill with gunk
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