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Marc O'Brien Marc O'Brien is offline
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Default Most efficient water heater?

On Mar 19, 11:04*am, wrote:
On Tue, 18 Mar 2008 23:45:30 -0500, Don Ocean
wrote:





ransley wrote:
On Mar 18, 4:46 am, Don Wiss wrote:
On Mon, 17 Mar 2008, Donna Ohl wrote:
I challenge you to find a water heater efficiency rating NOT in this
36-page listing for a water heater currently sold in the USA.
http://tinyurl.com/38eh4d
(long url)
http://www.gamanet.org/gama/inforeso...ntLaunch/C2AAF....
Where's the A.O. Smith Vertex model GPHE-50 that Bubba recommended?


Don www.donwiss.com (e-mail link at home page bottom).


I saw one unit near the bottom with an Energy Factor of 70, only a few
in the 60s and most in the 50-60 range. Vertex, I have a several year
old similar AO condensing ccommercial unit but I only know its 92%
efficent or so


I am aware of no water heater approaching 92% efficiency. Way too many
losses to achieve that.. Even Boiler technology can't do that yet


* * * * I have one.

* * * * It's electric :-)


Electric are normally about 34% efficient overall, most of the
inefficiency is at the power station.