Demand heater for SHW backup [RE-wrenches]

[Kurt Albershardt]

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I will concur - I chose Stiebel-Eltron after inquiring here a couple years back and we have been very happy with the performance (after getting over the initial shock of breaker and wiring requirements.)

There is a place for both tank style and tankless in many installations.  Tankless units are ideal for infrequently used bathrooms and kitchenettes - think guest houses or guest wings on larger residences.  You can size the tank heater and solar to meet the average load and save the tankless for peak shaving.  Also (particularly with the electric units) you have the ability to place the tankless heater close to the point of use (maybe not quite as close as they do in Europe!) which can save 
piping losses and reduce water waste on the end of that long run to the remote bathroom, guest house, or shop.



--On Tuesday, August 21, 2007 9:26 PM -0700 Doug Pratt <dmpratt at sbcglobal.net> wrote:

>
> Ian, an electric instant heater that modulates? You want the Stiebel-Eltron.
> http://www.stiebel-eltron-usa.com/products.html German manufactured with a
> North American distributor and warehouse. Quality stuff. They make a variety
> of sizes from handwashing to large multi-fixture whole house units. All but
> the smallest unit feature a front panel temperature dial. Set the temp you
> want, it won't deviate more than a couple degrees with variable flow (once
> you get past the minimum flow rate, which varies with model). Elements are
> 240v/50A, with one, two, or three elements per heater. Figure 10kW per
> element...
>
> I've been using their smallest handwashing unit in my shop for 4-5 years, no
> problems, other than 3kW doesn't go far in water heating, but it beats ice
> cold in the winter.
>
> Cheers,
> Doug Pratt



-- 
Kurt Albershardt
Eastern Sierra Energy Engineering
Reno, NV
775-853-1800








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