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re: Hot water heater not staying hot

Posted on 1/25/16 at 2:57 pm to
Posted by TigerstuckinMS
Member since Nov 2005
33687 posts
Posted on 1/25/16 at 2:57 pm to
Well, it's because there's no reason for it to heat hot water, so a hot water heater will just shut itself off.

If you were just trying to heat water, then it would be a water heater and it would work correctly.
Posted by LSUTigersVCURams
Member since Jul 2014
21940 posts
Posted on 1/25/16 at 2:57 pm to
quote:

Go tankless.Depending on the size of your home it shouldn't be that expensive, I plan on making the switch myself. Just have to make the time to install it.


We had this before we moved into our new place. It's freaking legit.
Posted by GenesChin
The Promise Land
Member since Feb 2012
37706 posts
Posted on 1/25/16 at 2:58 pm to
quote:



Go tankless.Depending on the size of your home it shouldn't be that expensive, I plan on making the switch myself. Just have to make the time to install it.



You can find sales on gas water heaters and most gas companies will offer a rebate for doing it. Highly recommended
Posted by Btrtigerfan
Disgruntled employee
Member since Dec 2007
21426 posts
Posted on 1/25/16 at 2:58 pm to
Do you use well water? It could be full of sediment.
Posted by poochie
Houma, la
Member since Apr 2007
6211 posts
Posted on 1/25/16 at 2:58 pm to
Ok, so then it sounds like there's two possibilities a) it's full of something that's limiting the volume or 2) it's not heating the new water up fast enough. There's no way that it's A so what would keep it from heating the new water up.

If there's gas to it and it heats some water up, you know your burner is working so maybe something is not turning the burner on. I'm going to say something is wrong with the thermostat.
This post was edited on 1/25/16 at 3:00 pm
Posted by LSUTigersVCURams
Member since Jul 2014
21940 posts
Posted on 1/25/16 at 2:59 pm to
nah city water
Posted by MoreOrLes
Member since Nov 2008
19472 posts
Posted on 1/25/16 at 3:00 pm to
Most homes don't have the gas service big enough to support a tankless.

Some draw up 200000 btu

Where as a 50 gallon tank might be 60000 BTU.


I know because i am in process of putting one and had to run a new gas line for it.
Posted by LSUTigersVCURams
Member since Jul 2014
21940 posts
Posted on 1/25/16 at 3:00 pm to
Appreciate the answers guys
Posted by airfernando
Member since Oct 2015
15248 posts
Posted on 1/25/16 at 3:01 pm to
quote:

It's gas
Is the fire staying lit? How long does it stay lit? Would start with thermostat or sensor(s) or by googling information.
Posted by Darth_Vader
A galaxy far, far away
Member since Dec 2011
64526 posts
Posted on 1/25/16 at 3:03 pm to
quote:

nah city water


So no well water. How old is the unit? If it's old you could still have sediment build up on the dip tube which would cause the problem you're seeing. If this isn't the problem, I'd guess it's a thermostat gone bad.
Posted by Kujo
225-911-5736
Member since Dec 2015
6015 posts
Posted on 1/25/16 at 3:13 pm to
quote:

Do you use well water? It could be full of sediment.



yeah, even the faucet of a single lever can have build up.

My shower wasn't getting all that hot. Removed handle, pulled and replaced cartridge, and boom scalding hot water.
Posted by Pax Regis
Alabama
Member since Sep 2007
12932 posts
Posted on 1/25/16 at 3:14 pm to
When is the last time you drained that thing?
Posted by Cooter Davenport
Austin, TX
Member since Apr 2012
9006 posts
Posted on 1/25/16 at 3:16 pm to
quote:

Spend the extra money and get a tankless. Never run out of hot water. Highly recommend.


Mine broke after 5 years and would alternate between ice cold and scalding hot. Made a ton of noise. Had to be replaced, after just 5 years (and they're more $ than a tank, which will last you 15). As far as reliability, my experience is they are no better than a tank. The only advantage is no tank to potentially leak or rupture in you attic.
This post was edited on 1/25/16 at 3:18 pm
Posted by GenesChin
The Promise Land
Member since Feb 2012
37706 posts
Posted on 1/25/16 at 3:17 pm to
quote:

The only advantage is no tank to potentially leak or rupture in you attic.


You also don't pay to heat water you aren't using.
Posted by Cooter Davenport
Austin, TX
Member since Apr 2012
9006 posts
Posted on 1/25/16 at 3:19 pm to
But you do draw and TON of gas when you are using it. And it encourages some people to shower for longer because it doesn't run out. I wouldn't be surprised if those aspects caused cost savings to even out.
Posted by WHATDOINO
Member since Dec 2008
6509 posts
Posted on 1/25/16 at 3:20 pm to
Why do you need to heat the water if it's already hot
Posted by Darth_Vader
A galaxy far, far away
Member since Dec 2011
64526 posts
Posted on 1/25/16 at 3:22 pm to
quote:

As far as reliability, my experience is they are no better than a tank. The only advantage is no tank to potentially leak or rupture in you attic.


The attic is a terrible place to have a hot water heater in the first place.
Posted by LSUTigersVCURams
Member since Jul 2014
21940 posts
Posted on 1/25/16 at 3:25 pm to
quote:

When is the last time you drained that thing?


We just moved in last June, but never.
Posted by LSUfan20005
Member since Sep 2012
8814 posts
Posted on 1/25/16 at 3:26 pm to
I was going to reply, "It IS winter." Because I get noticeably less hot water in the winter.

But it looks like you are in LA, where there is no winter.

Good luck on the solve.
Posted by Chili Dawg
Member since Sep 2012
730 posts
Posted on 1/25/16 at 3:29 pm to
A good tankless water heater installed by a licensed contractor (Atlanta) runs $3000-$3500. The backflush recommended by the manufacturers is around $150 a year. You could have a standard 50 gallon water heater installed for around $1000. No-brainer.
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