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Posted by hallerb@aol.com on January 5, 2007, 3:44 pm
CptDondo wrote:
> hallerb@aol.com wrote:
>
> >
> > this makes me wonder about that big flue exhausting heated home air
> > 24/7 all winter long... humm I wonder the same about my standard hot
> > water tank and furnace, must be like leaving a big window open
> > permanetely.
> >
> > wonder if anyone has ever done studies of flue heat losses?
>
> Don't most current building codes require outside combustion air these days?
>
> --Yan
many furnaces and most standard hot water tanks use room air, a bad
idea if you ask me.
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Posted by Gary KW4Z on January 5, 2007, 3:48 pm
Thank you to everyone that contributed on each board. While I haven't
totally made up my mind about what I will do, and I have plenty of time to
do that thankfully, I am leaning (due in part to opinions on these
newsgroups) to staying traditional, with a 50 gallon high efficiency, Gas,
Hot Water Heater with a long warranty. Being that there is mostly the wife
and myself I think that will due us even when we have the grandchildren
over.
Again thank you for each of your input and I will continue to follow this
thread and also do research into past question regarding tankless water
heaters. Could be by the time I actually build things will change again but
for now I'm changing my mind, back to the Gas Tank model. The reason is
that even with the cost savings of the tankless I'm very concerned that they
will not hold up over as long a time as tanks have proven to last and
apparently the manufacturers don't necessarily think they will either by the
warranty length they assign to them so that's my reasoning for changing my
mind.
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Posted by JimR on January 5, 2007, 4:37 pm
> Thank you to everyone that contributed on each board. While I haven't
> totally made up my mind about what I will do, and I have plenty of time to
> do that thankfully, I am leaning (due in part to opinions on these
> newsgroups) to staying traditional, with a 50 gallon high efficiency, Gas,
> Hot Water Heater with a long warranty.
[snip]
Having experience with both tankless and conventional, I much prefer
conventional. Consider this:
We have a standard large tanked water heater which serves kitchen, laundry
and two bathrooms. When we renovated the back half of the house we added a
small cabinet in the new hobby room with a second water heater tank inside
which serves only the adjacent master bathroom. This gives us hot water
within seconds.
( We also did a few other unconventional things such as adding an outdoor
sink and shower so that you can clean up and shower after working in the
garden or coming in from fishing. Since the "utilities" side of the house
(with the shower, plus nearby well pump, central air conditioners, etc.) is
behind a 6' concrete block and tile wall privacy is not a problem.)
With this experience, during any future renovation I'd consider another hot
water tank, perhaps a low-boy unit or attic unit, for almost-instant hot
water for one or more of the other bedroom suites -- Regards --
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Posted by on January 5, 2007, 9:05 pm
hallerb@aol.com says...
> My Takagi draws little enough current that if the power is out, I can
> > run it off the pocket-sized power inverter I keep in my car. No added
> > cost for that, I already had the inverter anyway.
> >
> > --
> > josh@phred.org is Joshua Putnam
>
> Odd the Takagi website doesnt list current consumption,'
It's in the PDF manual, towards the end.
> this makes me wonder about that big flue exhausting heated home air
> 24/7 all winter long... humm I wonder the same about my standard hot
> water tank and furnace, must be like leaving a big window open
> permanetely.
Haven't done a formal study of it, but while testing for drafts I blew
smoke around our water heater on a cold day, didn't have any noticeable
convection up the flue. But our flue is mostly horizontal, definitely
needs the blower.
Our long-range plan is to convert it to use outdoor combustion air once
we get around to the finished cabinetry in the pantry where it sits.
--
josh@phred.org is Joshua Putnam
<http://www.phred.org/~josh/>
Braze your own bicycle frames. See
<http://www.phred.org/~josh/build/build.html>
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Posted by on January 4, 2007, 11:50 pm
dmusicant@pacbell.net says...
>
> It works OK. I realize that at this point I'm on my own and I just hope
> it lasts a real long time because I don't presently like the idea of
> spending big bucks to fix or replace it.
>
Remember that when you do eventually need to replace it, you probably
won't be re-doing the gas plumbing, wiring, or potable water plumbing
for it. You'll just remove the old unit and install a new one.
Your N-069M-OD sells for under $1,000 on-line. My Takagi is under $900
these days. Replacement is simple enough you can do it yourself if
local code allows. (OK, be honest, how many people take out the
required permits to replace their tank water heaters?)
--
josh@phred.org is Joshua Putnam
<http://www.phred.org/~josh/>
Braze your own bicycle frames. See
<http://www.phred.org/~josh/build/build.html>
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