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Hot water tank running out of water quickly

Posted on 12/14/19 at 8:16 pm
Posted by indytiger
baton rouge/indy
Member since Oct 2004
10113 posts
Posted on 12/14/19 at 8:16 pm
I’ve noticed my electric hot water heater isn’t putting out like it used to. It’s about 9 years old. What could be causing this?
Posted by Bow08tie
Louisiana
Member since Oct 2011
4488 posts
Posted on 12/14/19 at 8:28 pm to
Might have had a heating element go bad
Posted by ItzMe1972
Member since Dec 2013
11383 posts
Posted on 12/14/19 at 10:12 pm to
Like Bowtie says, may be a heating element.

I have to adjust my thermost every few years to bump up the heat. Not sure why that is, maybe sediment at the bottom.

Bump the stat and check the element. If you don't know how, check Youtube.

Nine years isn't old for a water heater.
This post was edited on 12/14/19 at 10:17 pm
Posted by mfiredog
Stonewall
Member since Oct 2016
701 posts
Posted on 12/14/19 at 10:22 pm to
Drain it, flush it, change both elements.
Posted by East Coast Band
Member since Nov 2010
65749 posts
Posted on 12/14/19 at 11:08 pm to
Electric water heaters have two heating elements. I'm sure you know this, but some others may not know this
Posted by Clames
Member since Oct 2010
17744 posts
Posted on 12/15/19 at 12:20 am to
quote:

Electric water heaters have two heating elements.


Depends on the size and first-hour rating, many only have a single element.
Posted by fishfighter
RIP
Member since Apr 2008
40026 posts
Posted on 12/15/19 at 6:50 am to
quote:

Like Bowtie says, may be a heating element.


This

quote:

I have to adjust my thermost every few years to bump up the heat. Not sure why that is, maybe sediment at the bottom.


Need to flush out big time. Must have a lot of settlement in your water to do that.

Turn off power and run all hot water out the tank. Turn water off. Hook up a hose and lead it to your overflow drain line. Open the valve were the hose hooks up to and drain the tank. Once drained, cut the water back on and keep the drain line open. Let it run a good long time to flush out the tank.
Posted by OysterPoBoy
City of St. George
Member since Jul 2013
40328 posts
Posted on 12/15/19 at 4:05 pm to
quote:

my electric hot water heater isn’t putting out like it used to


Maybe it got married.
Posted by BRgetthenet
Member since Oct 2011
118092 posts
Posted on 12/15/19 at 6:53 pm to
Probably a bad thermocouple.
Posted by boudinman
Member since Nov 2019
6101 posts
Posted on 12/15/19 at 7:11 pm to
Electric hot water heaters usually have two heating elements. One at the top and one at the bottom. It appears the bottom one is out. Id replace both or buy another new water heater with it 9 years old. Either way be sure to replace the hot and cold water lines entering and exiting the tank.
Posted by baldona
Florida
Member since Feb 2016
22363 posts
Posted on 12/15/19 at 7:20 pm to
In my limited experience if the bottom element is bad the water is scalding hot but runs out fast. Reason being is all the hot water is on top and the One element tries to heat the entire tank. If the top element is bad you often have barely warm water, the bottom element tries to heat the whole tank but is unable to keep up.

There’s 2 elements and a thermostat OP, you guy replace all 3 components for like $35 very easily. As said the other issue is you may have a ton of sediment.
Posted by ruzil
Baton Rouge
Member since Feb 2012
17899 posts
Posted on 12/15/19 at 8:43 pm to
Change out the dip tube.
Posted by arcalades
USA
Member since Feb 2014
19276 posts
Posted on 12/15/19 at 10:46 pm to
First, consider replacing the water heater bc the bottom usually rusts out of a water heater within 10-12 years. I've replaced 2.

if not willing to replace, each element has a reset button. take off each cover and carefully press the reset. then if that doesn't change anything, change each element.
Posted by East Coast Band
Member since Nov 2010
65749 posts
Posted on 12/16/19 at 6:34 am to
Related question:

Why do they tell you to cut off the power to the water heater before adjusting the thermostat?
Posted by Magicmikeforlsu
Cenla
Member since Oct 2012
1771 posts
Posted on 12/17/19 at 9:11 pm to
So you dont accidentally electrocute yourself, no other reason
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