2.5 GPM is what a standard shower head flows at....The turn on flow rate is
much less then this.  Each manufacture will have a little different flow
rate requirements.  the one I looked at could handle three things demanding
hot water at once.  It was 7.6-8.0 GPM max flow rate give or take.
Michael
 

  _____  

From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED]
On Behalf Of Bob Kennedy
Sent: Sunday, March 23, 2008 5:58 AM
To: blindhandyman@yahoogroups.com
Subject: Re: [BlindHandyMan] Why Choose a Tankless Water Heater?



The only ones I've seen have been gas powered. One safety/economy feature
that I haven't decided if I like is the minimum flow rate before it will
fire. They have or let's say some have, so we don't get out of hand here,
some have a minimum of 2.5 gallons per minute flow rate before they will
fire. I'm guessing this is so a dripping faucet won't keep the heater
running all the time. But you have to turn on a pretty good blast to reach
2.5 gallons per minute. 

I've really only seen them in a commercial setting before. I know they are
getting more popular in houses I just haven't been around any in the house
yet. 

The commercial ones I saw worked in a restaurant and were strong enough to
keep their dish washer running with water at 160 degrees F. Pretty
impressive recovery rate.

----- Original Message ----- 
From: [EMAIL PROTECTED] <mailto:spiro%40netaxs.com> com 
To: blindhandyman@ <mailto:blindhandyman%40yahoogroups.com> yahoogroups.com 
Sent: Saturday, March 22, 2008 11:57 PM
Subject: Re: [BlindHandyMan] Why Choose a Tankless Water Heater?

Okay, in the described package, there must be a super heating system. Are 
they all electric? if not, do they use super thin, and thin walled tubing?
I can imagine the water flow for a shoer could overwhelm a unit without 
tricks up it's sleeving.
How do they work?
How about for filling a bathtub?
Would a house have one for each bathroom, and then general purposes a 
larger one?

On Sun, 23 Mar 2008, Ray Boyce wrote:

> Q: I'm considering replacing my old water heater with a tankless version.
> Are these things all they're cracked up to be?
>
> A: Tankless water heaters are likely the wave of the future for
residential
> hot water. It's the difference between having a "smart" water heater or a
> "dumb" one. Tankless heaters offer on-demand convenience. Because these
> heaters don't have a holding tank, water is heated on an as-needed basis,
> not heated and stored for hours like a traditional tank. This reduces
energy
> loss from sitting water and also guarantees you'll never be cold if you're
> the last one in the shower. Plus, tankless heaters are powerful, yet
> compact. Most can be wall-mounted inside or outside the home. Although
sizes
> vary, the average tankless unit is about 24 inches high, 18 inches wide
and
> 9 inches deep-significantly smaller than the traditional 40-gallon tank.
> Plus, with many tankless units you can dial in the water temperature with
a
> digital controller.
>
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>

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