 |
 |
Robert, I am not interested in an ERV. I have not been able to source p.o.u. HRV. Have you ever tempered incoming air on a HRV, or do you not think they are efficient enough for cold climates? Ben On 4/7/09 1:17 PM, "Robert Riversong" <[log in to unmask]> wrote: > Ben, et al: > > The Panasonic FV-04VE1 seems like a higher-tech version of the old Mitsubishi > point-of-use HRV, except the Panasonic is an ERV which exchanges moisture as > well. > > If one of the purposes of an exhaust fan is to evacuate moisture, then it > makes no sense to recycle it back in (other than saving the latent heat of the > water vapor). Also, like all ERVs, this one is less than ideal in a cold > climate. > > To prevent freeze-up, instead of an electric resistance defroster (which some > larger units have), the Panasonic simple closes off the incoming air for a > while - making it an exhaust-only fan. So if the purpose is also to keep the > indoor pressure balanced, it won't do that in weather below 32° very well and > not at all below 20°. > > --- On Tue, 4/7/09, Ben Graham <[log in to unmask]> wrote: >> From: Ben Graham <[log in to unmask]> >> Subject: Re: Point vent heat exchangers >> To: [log in to unmask] >> Date: Tuesday, April 7, 2009, 11:58 AM >> >> Thanks, >> Any experience with this one? >> >> >> On 4/7/09 11:12 AM, "Konrad Scheltema" >> <[log in to unmask]> >> wrote: >> >>> > Panasonic has one in their whisper line >>> > >>> > Konrad >>> > >>> > >>> > On Apr 7, 2009, at 10:54 AM, Ben Graham wrote: >>> > >>>> >> Does anyone know of domestically available point source heat exchange >>>> >> ventilator like the vent-axia from abroad? >>>> >> >>>> >> Ben >>>> >> >>>> >> Those who give up freedom for safety, deserve neither. >>>> >> Benjamin Franklin >>>> >> __________________________________________________________ >>>> >> >>>> >> Ben Graham >>>> >> www.naturaldesignbuild.us >>>> >> Natural building/design services/workshops/consulting >>>> >> >>>> >> Integrating Culture and Nature >>>> >> 802.454.1167 >>> > >>> > Konrad Scheltema >>> > >>> > Evergreen Homebuilders LLC >>> > 121 March Davis Drive >>> > Guilford, VT 05301 >>> > >>> > Phone/Fax (802) 246-1600 >>> > Cell (802)380-6437 >>> > email [log in to unmask] >>> > Web www.evergreen-homebuilders.biz >> >> Those who give up freedom for safety, deserve neither. >> Benjamin Franklin >> __________________________________________________________ >> >> Ben Graham >> www.naturaldesignbuild.us >> Natural building/design services/workshops/consulting >> >> Integrating Culture and Nature >> 802.454.1167 > Those who give up freedom for safety, deserve neither. Benjamin Franklin __________________________________________________________ Ben Graham www.naturaldesignbuild.us Natural building/design services/workshops/consulting Integrating Culture and Nature 802.454.1167