[Greenbuilding] $99 HPWH: AirTap

[Dr. C.F. Vasile]

Keith: One of our dealers sent me this link http://www.beyondpollution.com/, 
which describes the AirTap water heater add-on. According to their marketing 
literature, after a $300 tax credit, the net cost for the AirTap HPWH system 
is $99. Unlike the HPWH's promoted in the past by DoE & electric utilities, 
it can be used with either gas or electric, tank type water heaters.

Ratings: Max water temp: 132F; Efficiency: 240%; Energy Factor (EF): 2.2 
First Hour Rating (FHR): 42 gallons; Output: 7000 Btu/hr (2kW); Electric 
Service: 120 VAC @ 6 A (720kW).

----- Original Message ----- 
From: "Keith Winston" <keith at earthsunenergy.com>
Cc: "Greenbuilding Discussion List" <greenbuilding at listserv.repp.org>
Sent: Wednesday, January 09, 2008 10:22 PM
Subject: Re: [Greenbuilding] All Electric House


> Have you (anyone?) used a heat pump water heater? Which brands? I can
> get the Wattsaver sorta maybe, but I've heard mixed things about it, and
> I've seen and talked with these people also:
>
> http://www.aers.com/etech_residential_water_heating.html
>
> And these folks too:
>
> http://www.nyletherm.com/waterheating.htm
>
> Has anyone actually installed or, better yet, lived with one of these
> yet? I've recommended them before, but I always get antsy recommending
> things I haven't worked with before (though it's almost completely
> inevitable in the technological world today...)
>
> Warmly, Keith
>
>
> Carmine Vasile wrote:
>> Did you consider installing a heat pump water heater with an outside air 
>> supply to provide "free" space cooling. > To: 
>> greenbuilding at listserv.repp.org> From: dantonioli at earthlink.net> Date: 
>> Tue, 8 Jan 2008 13:27:30 -0800> Subject: [Greenbuilding] All Electric 
>> House> > I have a customer who is building two new homes in the Oakland 
>> hills. > She wants both to be all-electric and wants to incorporate 
>> solar, > both thermal and photovoltaics.> > Both homes are about to have 
>> the roofs put on. The location is far > away from the gas main and she's 
>> decided that it's too expensive run > and has told the builder to fill in 
>> all the trenches that would have > carried the gas pipes. I told her that 
>> before she makes any decisions > that she need to have the final energy 
>> performance calculated to see > if they'll pass Title 24 minimum 
>> standards (California's energy > code). She's made some very abrupt 
>> decisions and there's a good > chance that she'll have to have the trench 
>> re-dug and the gas line > put in.> > Nonetheless, I told her and her 
>> architect I would be willing to help > as much as the situation permits, 
>> but that they should prepare > themselves for some surprises. (Such as 
>> increasing the size of the pv > system, or having to run the gas line 
>> after all.)> > With a 2.5 to 3.0 KW PV system, and a four module thermal 
>> system > feeding an electric hot water heater, a lot can be accomplished. 
>>  > Unfortunately, she's installing central air heating in both homes, > 
>> and feeding that system with an all electric heater will most likely > 
>> blow the energy draw out the window, even if it's offset with PV. > Does 
>> anyone on the list have experience with "energy efficient all > electric 
>> forced air systems," or is that an oxymoron?> > What about feeding the 
>> heater with a solar air handler? The site has > excellent solar gain; in 
>> fact, if they designed passive solar homes > they could accomplish an 
>> incredible, passive heating system, but > neither she or the architect 
>> thought of it.> > Regardless of what she should have done, she's stuck 
>> with what she > has. And unless we can come up with a truly energy 
>> efficient strategy > for an all electric house then she's very likely 
>> going to have to run > the gas line. (Which, by our current energy 
>> standards, is bogus given > the fact that natural gas is non-renewable, 
>> polluting, and > contributes to global warming. It's hardly "energy 
>> efficient" in the > larger scenario.)> > Dan Antonioli> > 
>> _______________________________________________> Greenbuilding email 
>> list> Environmentally-preferable design, construction, building elements> 
>> List info: 
>> http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org> 
>> List email: Greenbuilding at listserv.repp.org> Managed by BuildingGreen, 
>> Inc. http://www.buildinggreen.com> publisher of Environmental Building 
>> News and GreenSpec> Hosted and archived by REPP / CREST 
>> http://www.crest.org> To get on the list:> 
>> http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org> 
>> or mailto:greenbuilding-request at listserv.repp.org?subject=unsubscribe> To 
>> get off the list:> 
>> http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org> 
>> or mailto:greenbuilding-request at listserv.repp.org?subject=unsubscribe
>> _______________________________________________
>> Greenbuilding email list
>>      Environmentally-preferable design, construction, building elements
>> List info: 
>> http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
>> List email: Greenbuilding at listserv.repp.org
>> Managed by BuildingGreen, Inc. http://www.buildinggreen.com
>>       publisher of Environmental Building News and GreenSpec
>> Hosted and archived by REPP / CREST http://www.crest.org
>> To get on the list:
>> 
>> http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
>>   or mailto:greenbuilding-request at listserv.repp.org?subject=unsubscribe
>> To get off the list:
>> 
>> http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
>>   or mailto:greenbuilding-request at listserv.repp.org?subject=unsubscribe
>>
>>
>
>
> _______________________________________________
> Greenbuilding email list
>     Environmentally-preferable design, construction, building elements
> List info: 
> http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
> List email: Greenbuilding at listserv.repp.org
> Managed by BuildingGreen, Inc. http://www.buildinggreen.com
>      publisher of Environmental Building News and GreenSpec
> Hosted and archived by REPP / CREST http://www.crest.org
> To get on the list:
>  http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
>  or mailto:greenbuilding-request at listserv.repp.org?subject=unsubscribe
> To get off the list:
>  http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
>  or mailto:greenbuilding-request at listserv.repp.org?subject=unsubscribe
>