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Post Subject:

40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 children

Reply from: Thomas G. Marshall
Date: 07 Apr 2008, 19:24
40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 children


Ok, our 40 gal gas water heater is failing. About 10 years old, which I
hear is ok.

But every time I talk to someone about their 40 gal water heater, they all
complain that they run out of hot water (comparable size homes and kids).

Bur our builder (and all builder's we spoke to when looking to build)
*insist* that 40 gallons is enough.

But we were always worried about running the wash or dishwasher before
showering, or two long showers would result in the 2nd losing water.
Complete with those water saving disks etc.

1. Is 80 gallons overkill? Perhaps I'm reacting viscerally.

2. Am I going to notice a large gas usage increase?

3. Are there rules in place limiting the water tank sizes?

4. Are there any particular brands to look for or stay away from?

I'm sorry for the barrage of questions.





Reply from: Glenn
Date: 07 Apr 2008, 19:41
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 childre


"Thomas G. Marshall"
<tgm2tothe10thpower@replacetextwithnumber.hotmail . com >
wrote in message news:VMsKj.891$NM.653@trnddc01...
>
> Ok, our 40 gal gas water heater is failing. About 10
> years old, which I hear is ok.
>
> But every time I talk to someone about their 40 gal
> water heater, they all complain that they run out of
> hot water (comparable size homes and kids).

When I had two daughters home, I had two 40gal set up
in series. They make a 60 gal but 2 - 40's probably
would be cheaper.


Reply from: Thomas G. Marshall
Date: 07 Apr 2008, 19:57
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 childre

Glenn said something like:
> "Thomas G. Marshall"
> <tgm2tothe10thpower@replacetextwithnumber.hotmail . com >
> wrote in message news:VMsKj.891$NM.653@trnddc01...
>>
>> Ok, our 40 gal gas water heater is failing. About 10
>> years old, which I hear is ok.
>>
>> But every time I talk to someone about their 40 gal
>> water heater, they all complain that they run out of
>> hot water (comparable size homes and kids).
>
> When I had two daughters home, I had two 40gal set up
> in series. They make a 60 gal but 2 - 40's probably
> would be cheaper.

Another question that has always bugged me raises in me noggin.

What happens when half a tank is used up? Does ice cold water rush in and
cool everything down? Is it thus better to gang two together somehow to
have the 2nd take over when the first is refilling?



Reply from: Jeff Cohen
Date: 07 Apr 2008, 20:13
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 childre

Cold water sinks so it pushes the hot water up, although you will get some
"warm" water before cold as the hot water runs out.

I would agree that 40 is enough most of the time but you will run short
every now and then. I can't imaging a 60 gal not being adequate for you.
The idea of 2 x 40 gal is interesting, but I suspect it would use more
energy than 1 X 80 check the ratings, certainly more than 1 x 60 gal.


"Thomas G. Marshall" <tgm2tothe10thpower@replacetextwithnumber.hotmail . com >
wrote in message news:MftKj.3026$_I1.667@trnddc02...
> Glenn said something like:
>> "Thomas G. Marshall"
>> <tgm2tothe10thpower@replacetextwithnumber.hotmail . com >
>> wrote in message news:VMsKj.891$NM.653@trnddc01...
>>>
>>> Ok, our 40 gal gas water heater is failing. About 10
>>> years old, which I hear is ok.
>>>
>>> But every time I talk to someone about their 40 gal
>>> water heater, they all complain that they run out of
>>> hot water (comparable size homes and kids).
>>
>> When I had two daughters home, I had two 40gal set up
>> in series. They make a 60 gal but 2 - 40's probably
>> would be cheaper.
>
> Another question that has always bugged me raises in me noggin.
>
> What happens when half a tank is used up? Does ice cold water rush in and
> cool everything down? Is it thus better to gang two together somehow to
> have the 2nd take over when the first is refilling?
>



Reply from: Bubba
Date: 08 Apr 2008, 03:14
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 childre

On Mon, 07 Apr 2008 17:57:00 GMT, "Thomas G. Marshall"
<tgm2tothe10thpower@replacetextwithnumber.hotmail . com > wrote:

>Glenn said something like:
>> "Thomas G. Marshall"
>> <tgm2tothe10thpower@replacetextwithnumber.hotmail . com >
>> wrote in message news:VMsKj.891$NM.653@trnddc01...
>>>
>>> Ok, our 40 gal gas water heater is failing. About 10
>>> years old, which I hear is ok.
>>>
>>> But every time I talk to someone about their 40 gal
>>> water heater, they all complain that they run out of
>>> hot water (comparable size homes and kids).
>>
>> When I had two daughters home, I had two 40gal set up
>> in series. They make a 60 gal but 2 - 40's probably
>> would be cheaper.
>
>Another question that has always bugged me raises in me noggin.
>
>What happens when half a tank is used up? Does ice cold water rush in and
>cool everything down? Is it thus better to gang two together somehow to
>have the 2nd take over when the first is refilling?
>

Well, its actually a silly question when you look at the way a water
heater actually works.
Half of the tank doesnt get "used up". There arent separate chambers
in the water heater. The incoming water temperature mixes with the
temperature of the water in the tank constantly as the water is being
used. Thus, the tank loses temperature if the water is being used up
faster than the burner can heat it.
You can put two water heater together in parallel with proper valving
(not series) if you wish for more capacity but with 4 people you can
solve your problem with pretty much a single standard water heater.
Keep in mind that if you have high water pressure (something above
75psi or so) you might want to install a pressure reducing valve on
your water line. Higher pressure uses more water and is harder on
tanks, valves, seats, cartridges, washers and hoses.
Bubba

Reply from: RicodJour
Date: 07 Apr 2008, 20:01
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 children

On Apr 7, 1:24 pm, "Thomas G. Marshall"
<tgm2tothe10thpo...@replacetextwithnumber.hotmail . com > wrote:
> Ok, our 40 gal gas water heater is failing. About 10 years old, which I
> hear is ok.
>
> But every time I talk to someone about their 40 gal water heater, they all
> complain that they run out of hot water (comparable size homes and kids).
>
> Bur our builder (and all builder's we spoke to when looking to build)
> *insist* that 40 gallons is enough.
>
> But we were always worried about running the wash or dishwasher before
> showering, or two long showers would result in the 2nd losing water.
> Complete with those water saving disks etc.
>
> 1. Is 80 gallons overkill? Perhaps I'm reacting viscerally.
>
> 2. Am I going to notice a large gas usage increase?
>
> 3. Are there rules in place limiting the water tank sizes?
>
> 4. Are there any particular brands to look for or stay away from?
>
> I'm sorry for the barrage of questions.

Instead of replacing the old with a newer version of the old, you may
want to look into a tankless water heater instead of keeping that 40+
gallons of water at ready-to-be-used temperature 24/7/365 when you
really only need the hot water for maybe an hour a day. They've
been in use around the world for decades, but are just gaining
momentum in the US.
Here's one link: * w w w .tanklesswaterheaterguide . com / I haven't
read through that link, but it seemed to hit the high points and will
give you an overview - from there it's up to you and your finely honed
Google skills.

R

Reply from: Bill
Date: 07 Apr 2008, 20:50
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 children


> Instead of replacing the old with a newer version of the old, you may
> want to look into a tankless water heater instead of keeping that 40+
> gallons of water at ready-to-be-used temperature 24/7/365 when you
> really only need the hot water for _maybe_ an hour a day. They've
> been in use around the world for decades, but are just gaining
> momentum in the US.
> Here's one link: * w w w .tanklesswaterheaterguide . com / I haven't
> read through that link, but it seemed to hit the high points and will
> give you an overview - from there it's up to you and your finely honed
> Google skills.
>

Tankless is the way to go.
Just ask yourself, do you keep your auto running in the driveway so it will
be warm when you get in it?

They say tankless is 80% more efficient than an electric tank.
That one is more expensive, but it recoupes in cost in two to three years.



Reply from: mike
Date: 07 Apr 2008, 20:59
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 children

On Apr 7, 11:50 am, "Bill" <barg...@bellsouth . net > wrote:
> > Instead of replacing the old with a newer version of the old, you may
> > want to look into a tankless water heater instead of keeping that 40+
> > gallons of water at ready-to-be-used temperature 24/7/365 when you
> > really only need the hot water for maybe an hour a day.  They've
> > been in use around the world for decades, but are just gaining
> > momentum in the US.
> > Here's one link:   * w w w .tanklesswaterheaterguide . com / I haven't=

> > read through that link, but it seemed to hit the high points and will
> > give you an overview - from there it's up to you and your finely honed
> > Google skills.
>
> Tankless is the way to go.
> Just ask yourself, do you keep your auto running in the driveway so it wil=
l
> be warm when you get in it?
>
> They say tankless is 80% more efficient than an electric tank.
> That one is more expensive, but it recoupes in cost in two to three years.=


Spare us the tankless marketing bullship. Standard water heaters DO
NOT run constantly. They are well insulated and have a large thermal
mass of water inside.

When tankless salesmen feel the need to trot out BS like that, it
makes me distrust any further "data" they want to push.

Reply from: RicodJour
Date: 07 Apr 2008, 21:30
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 children

On Apr 7, 2:59 pm, mike <yellowbird...@hotmail . com > wrote:
> On Apr 7, 11:50 am, "Bill" <barg...@bellsouth . net > wrote:
>
>
>
> > > Instead of replacing the old with a newer version of the old, you may
> > > want to look into a tankless water heater instead of keeping that 40+
> > > gallons of water at ready-to-be-used temperature 24/7/365 when you
> > > really only need the hot water for maybe an hour a day. They've
> > > been in use around the world for decades, but are just gaining
> > > momentum in the US.
> > > Here's one link: * w w w .tanklesswaterheaterguide . com / I haven't
> > > read through that link, but it seemed to hit the high points and will
> > > give you an overview - from there it's up to you and your finely honed
> > > Google skills.
>
> > Tankless is the way to go.
> > Just ask yourself, do you keep your auto running in the driveway so it will
> > be warm when you get in it?
>
> > They say tankless is 80% more efficient than an electric tank.
> > That one is more expensive, but it recoupes in cost in two to three years.
>
> Spare us the tankless marketing bullship. Standard water heaters DO
> NOT run constantly. They are well insulated and have a large thermal
> mass of water inside.
>
> When tankless salesmen feel the need to trot out BS like that, it
> makes me distrust any further "data" they want to push.

No, they don't run constantly, but they do maintain a large amount of
mass at a substantially higher temperature with relatively little
insulation. There's only one way to do that - throw money at it. The
standard water heater tank doesn't have a setback or vacation setting,
so it maintains that higher temperature regardless of the amount of
hot water actually needed, time of day, etc. Tankless is a superior
system for almost everyone. I don't buy anything based on what a
salesman or marketing department states without performing some due
diligence and investigating on my own.

R

Reply from: PeterD
Date: 08 Apr 2008, 03:05
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 childre

On Mon, 7 Apr 2008 12:30:10 -0700 (PDT), RicodJour
<ricodjour@worldemail . com > wrote:

>On Apr 7, 2:59 pm, mike <yellowbird...@hotmail . com > wrote:

>>
>> Spare us the tankless marketing bullship. Standard water heaters DO
>> NOT run constantly. They are well insulated and have a large thermal
>> mass of water inside.
>>
>> When tankless salesmen feel the need to trot out BS like that, it
>> makes me distrust any further "data" they want to push.

I was going to jump on Mike but then you proved him totally correct!

>
>No, they don't run constantly, but they do maintain a large amount of
>mass at a substantially higher temperature with relatively little
>insulation.

The insulation in most water heaters today is good and easily
supplicated as well. That's not a valid point at all.

>There's only one way to do that - throw money at it. The
>standard water heater tank doesn't have a setback or vacation setting,

Sure it does. Gas water heaters do have (and have had for years) such
as setting. An electric heater has the circuit breaker--kick it off
and the hot water cost is then zero.

>so it maintains that higher temperature regardless of the amount of
>hot water actually needed, time of day, etc. Tankless is a superior
>system for almost everyone.

Nope, not even slightly.

>I don't buy anything based on what a
>salesman or marketing department states without performing some due
>diligence and investigating on my own.

Which you didn't do here. There are many situations where tankless is
far from optimal.

Oh, and FYI, I've had both, and I'm totally satisfied with the results
of my 40 gal *tanked* water heater! We're not talking investigation
here, but real world experience.

Reply from: SteveB
Date: 09 Apr 2008, 05:09
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 childre



>There's only one way to do that - throw money at it. The
>standard water heater tank doesn't have a setback or vacation setting,

Been a long long long long time since you've bought or even looked at a
water heater, I'd say



Reply from: RicodJour
Date: 09 Apr 2008, 03:19
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 children

On Apr 8, 11:09 pm, "SteveB" <pittmanpir...@henderson . com > wrote:
> >There's only one way to do that - throw money at it. The
> >standard water heater tank doesn't have a setback or vacation setting,
>
> Been a long long long long time since you've bought or even looked at a
> water heater, I'd say

Reading what I wrote, I'm wondering what I wrote, and am overwrought
by that writing. How wrong my writing was.

I can only assume temporary insanity, or possession by demons.

R

Reply from: bigjimpack@gmail . com
Date: 10 Apr 2008, 02:25
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 children

when going on vacation I turn my water heater to vacation setting. i
doubt it comes on then and costs almost nothing. i too am not sold on
the tankless.


On Apr 7, 3:30 pm, RicodJour <ricodj...@worldemail . com > wrote:
> On Apr 7, 2:59 pm, mike <yellowbird...@hotmail . com > wrote:
>
>
>
>
>
> > On Apr 7, 11:50 am, "Bill" <barg...@bellsouth . net > wrote:
>
> > > > Instead of replacing the old with a newer version of the old, you ma=
y
> > > > want to look into a tankless water heater instead of keeping that 40=
+
> > > > gallons of water at ready-to-be-used temperature 24/7/365 when you
> > > > really only need the hot water for maybe an hour a day.  They've=

> > > > been in use around the world for decades, but are just gaining
> > > > momentum in the US.
> > > > Here's one link:   * w w w .tanklesswaterheaterguide . com /I haven'=
t
> > > > read through that link, but it seemed to hit the high points and wil=
l
> > > > give you an overview - from there it's up to you and your finely hon=
ed
> > > > Google skills.
>
> > > Tankless is the way to go.
> > > Just ask yourself, do you keep your auto running in the driveway so it=
will
> > > be warm when you get in it?
>
> > > They say tankless is 80% more efficient than an electric tank.
> > > That one is more expensive, but it recoupes in cost in two to three ye=
ars.
>
> > Spare us the tankless marketing bullship.  Standard water heaters DO
> > NOT run constantly.  They are well insulated and have a large thermal
> > mass of water inside.
>
> > When tankless salesmen feel the need to trot out BS like that, it
> > makes me distrust any further "data" they want to push.
>
> No, they don't run constantly, but they do maintain a large amount of
> mass at a substantially higher temperature with relatively little
> insulation.  There's only one way to do that - throw money at it.  The=

> standard water heater tank doesn't have a setback or vacation setting,
> so it maintains that higher temperature regardless of the amount of
> hot water actually needed, time of day, etc.  Tankless is a superior
> system for almost everyone.  I don't buy anything based on what a
> salesman or marketing department states without performing some due
> diligence and investigating on my own.
>
> R- Hide quoted text -
>
> - Show quoted text -


Reply from: Bill
Date: 07 Apr 2008, 21:34
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 children

Salesman I'm not, someone who likes to save money, I am.
I'm sorry you are that naive to technology.

> > Instead of replacing the old with a newer version of the old, you may
> > want to look into a tankless water heater instead of keeping that 40+
> > gallons of water at ready-to-be-used temperature 24/7/365 when you
> > really only need the hot water for _maybe_ an hour a day. They've
> > been in use around the world for decades, but are just gaining
> > momentum in the US.
> > Here's one link: * w w w .tanklesswaterheaterguide . com / I haven't
> > read through that link, but it seemed to hit the high points and will
> > give you an overview - from there it's up to you and your finely honed
> > Google skills.
>
> Tankless is the way to go.
> Just ask yourself, do you keep your auto running in the driveway so it
> will
> be warm when you get in it?
>
> They say tankless is 80% more efficient than an electric tank.
> That one is more expensive, but it recoupes in cost in two to three years.

Spare us the tankless marketing bullship. Standard water heaters DO
NOT run constantly. They are well insulated and have a large thermal
mass of water inside.

When tankless salesmen feel the need to trot out BS like that, it
makes me distrust any further "data" they want to push.



Reply from: mike
Date: 08 Apr 2008, 00:09
Re: 40 gal just not enough: Replacing water heater for 2400 sq home. Family of 2 adults + 2 children

On Apr 7, 12:34 pm, "Bill" <barg...@bellsouth . net > wrote:
> Salesman I'm not, someone who likes to save money, I am.
> I'm sorry you are that naive to technology.
>
>
>
>
>
> > > Instead of replacing the old with a newer version of the old, you may
> > > want to look into a tankless water heater instead of keeping that 40+
> > > gallons of water at ready-to-be-used temperature 24/7/365 when you
> > > really only need the hot water for maybe an hour a day. They've
> > > been in use around the world for decades, but are just gaining
> > > momentum in the US.
> > > Here's one link: * w w w .tanklesswaterheaterguide . com /I haven't
> > > read through that link, but it seemed to hit the high points and will
> > > give you an overview - from there it's up to you and your finely honed=

> > > Google skills.
>
> > Tankless is the way to go.
> > Just ask yourself, do you keep your auto running in the driveway so it
> > will
> > be warm when you get in it?
>
> > They say tankless is 80% more efficient than an electric tank.
> > That one is more expensive, but it recoupes in cost in two to three year=
s.
>
> Spare us the tankless marketing bullship.  Standard water heaters DO
> NOT run constantly.  They are well insulated and have a large thermal
> mass of water inside.
>
> When tankless salesmen feel the need to trot out BS like that, it
> makes me distrust any further "data" they want to push.- Hide quoted text =
-
>
> - Show quoted text -

You're the one who thought that standard water heaters run
continuously and that tankless are 80% more efficient than tanks!
SNORT.

Maybe you should listen to someone besides your tankless salesman:
* w w w .washingtonpost . com /wp-dyn/content/story/2008/02/08/ST200802080225=
3.html

But if you want spend dollars to chase pennies, more power to ya.


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  Glenn
    Jeff Cohen
    Bubba
   Bill
    mike
     RicodJour
      PeterD
       SteveB
        RicodJour
     Bill
      mike
       Thomas G. Marshall
        hallerb@aol . com
         Thomas G. Marshall
          RicodJour
           Matt W. Barrow
            S. Barker
     ransley
      S. Barker
       George
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         Jeff
          hallerb@aol . com
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