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Tankless Hot Water Heaters Gary KW4Z 01-04-2007
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Posted by on January 4, 2007, 11:34 pm


dmusicant@pacbell.net says...

> The responses in this thread already taught me one thing: I think I need
> a UPS if I don't want to do without hot water in the event of a power
> failure. I guess it's no big deal, actually. Power failures, at least
> ones that last longer than a few seconds, are pretty rare here. Being
> without power would be a much bigger inconvenience than being without
> hot water. And I guess a UPS that would supply power for more than 1/2
> hour or so is going to be costly. So's a generator.

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
<http://www.phred.org/~josh/>
Braze your own bicycle frames. See
<http://www.phred.org/~josh/build/build.html>

Posted by hallerb@aol.com on January 5, 2007, 8:33 am


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,'

In any case those who vent up a chimney are probably low power users in
comparison with direct vent models that must use a blower & motor for
exhaustion of course chimney type often need chimney upgrades because
the high BTU models are perhaps 3 times the BTU of a average forced air
furnace.

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?

Because oif this awhile ago I had decided to go with forced vent
standard high BTU tank.....


Posted by CptDondo on January 5, 2007, 1:33 pm


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

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.


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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