The Goodman furnace in our on grid house pulls 400 W.
At 08:17 PM 8/23/2018, you wrote:
I agree with Dana 100% almost. I have measured
many a furnace with up to 1300 watts, 800 or
1000 watts is normal. But this furnace with
larger ducts and a high temp rise (140
discharge) and ECM motor was an exceptionallyÂ
low draw. This is from memory back in about
2010, I have since had a heart attack with a
heavy penalty so my memory may be flawed. Â
On Thu, Aug 23, 2018 at 6:44 PM Dana
<<mailto:[email protected]>[email protected]> wrote:
Drake,
All the conventional units I have amp clamped
over the years are pushing 900-900+ watts per
hour. I do not recommend them ever & to date I
have never found a lower wattage blower. I would
assume that a permanent magnet motor would fit
this suggestion, but I have not found one.
For off grid I recommend: Radiant floor heat
first and hot water base board second long
before hot air. Air is a better insulator than a heat transfer agent.
The new ECM (electronically commutated motors)
pump motors are basically at DC permanent magnet
motor power draws [Taco & Grundfoss] these days.
Â
Best of luck with this one.
Â
----------------------------------------------------------------------------
Dana Orzel                  Â
          Great Solar Works, Inc.
C - 208.721.7003Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
      <mailto:[email protected]>[email protected]
Idaho Contractor - # 028765Â Â Â Â Â Â Â Â Idaho PV # 028374
NABCEP # 051112-136Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
       <http://www.solarwork.biz>www.solarwork.biz
"Responsible Technologies for Responsible People since 1988"Â
P Please consider the environment before printing this email.
Â
Â
From: RE-wrenches
<<mailto:[email protected]>[email protected]>
On Behalf Of Drake
Sent: Thursday, August 23, 2018 2:37 PM
To: RE-wrenches
<<mailto:[email protected]>[email protected]>
Subject: [RE-wrenches] Forced air Furnace
Â
Hello Wrenches,
What is the best choice for a propane, forced
air furnace for an off grid house? We would
prefer one that doesn't have a phantom load,
although the transformer for the thermostat may
not be avoidable. Low blower current would be
preferable. The furnace AC will be powered by a Magnum 4448 PAE.
Thank you,
Drake
Drake Chamberlin
Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
740-448-7328
<http://athens-electric.com/>http://athens-electric.com/
Â
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