[Greenbuilding] Greenbuilding Digest, Vol 5, Issue 45

[jfstraube at gmail.com]

The last generation was more limited. Most of the new products released in the last couple of years are going under -20. 
The HyperHeat has solid performance but suffers from mediocre efficiency at temps in the -10 and up range. 

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-----Original Message-----
From: "John O'Brien" <john at boardom.ca>
Sender: greenbuilding-bounces at lists.bioenergylists.org
Date: Mon, 31 Jan 2011 08:56:06 
To: Green Building<greenbuilding at lists.bioenergylists.org>
Reply-To: Green Building <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Greenbuilding Digest, Vol 5, Issue 45

You're lucky to get down to -25C frank... My friend had a fuji RLQ
that kicks out at -15C. All of the literature I've seen for the Fuji's
state 5F/-15C as a minimum operating temp. I was under the impression
you had to go to a mitsubishi or daiken to get below that.

John

On Sun, Jan 30, 2011 at 3:35 PM, Paul Eldridge
<paul.eldridge at ns.sympatico.ca> wrote:
> Hi Frank,
>
> I would recommend a high efficiency ductless heat pump such as the Fujitsu
> 12RLS.  We have two ductless heat pumps in our home that satisfy virtually
> all of our space heating needs -- an older and now discontinued Friedrich
> and a Sanyo 12KHS71.
>
> Earlier today I read the Kill-a-Watt monitor for our Sanyo. In past the 109
> hours, it has consumed 41.56 kWh, which works out to be an average of
> 381-watts or 9.15 kWh/day.  Our average temperature during this time was
> -4.4°C (max: +1°C / min: -11°C) and this particular unit serves a little
> over 100 m2/1,100 ft2 without the assistance of any other heat source.  It
> operates down to roughly -25°C and below that our oil-fired boiler takes
> over.
>
> Cheers,
> Paul
>
> Message: 1
> Date: Sat, 29 Jan 2011 22:08:37 -0500
> From: Frank Cetera <alchemicalfranklen at gmail.com>
> To: greenbuilding at lists.bioenergylists.org
> Subject: [Greenbuilding] Heating Options
> Message-ID:
> 	<AANLkTinHq1wk4aDMUXUF27L3mW3wu2u_jCGs4G9U+rdf at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> I'd like to pose the following question to the group:
>
> Whereas I am renovating a home from a vacant shell condition in which it is
> currently inhabitable;
> Whereas I desire a Finnish Masonry ContraFlow Stove as the eventual primary
> heating source of my home;
> whereas I likely won't have the time to have one installed before the next
> heating season at which time I desire to be living in this house;
> As well as I likely won't have the funds to install one immediately as I
> will need some extra cash to install a foundation block of concrete below
> where the heater will be positioned;
>
> What would be a good heating system that:
> Doesn't rely on ductwork
> Would be able to heat by zone or room (it would just be me living in the
> home at first)
> Would function as a backup/secondary source once the Masonry stove was in
> place
>
> Upstate NY
> Single Family, 2-story, 1300 sq. ft.
>
> ~ Frank Cetera
> www.alchemicalnursery.org
>
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