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The Goodman furnace in our on grid house pulls 400 W. <br><br>
At 08:17 PM 8/23/2018, you wrote:<br>
<blockquote type=cite class=cite cite="">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 exceptionally 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.
<br><br>
On Thu, Aug 23, 2018 at 6:44 PM Dana
<<a href="mailto:dana@solarwork.com">dana@solarwork.com</a>>
wrote:<br>
<dl><br>
<dd>Drake,<br><br>
<dd>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.<br><br>
<dd>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.<br><br>
<dd>The new ECM (electronically commutated motors) pump motors are
basically at DC permanent magnet motor power draws [Taco & Grundfoss]
these days.<br><br>
<dd> <br><br>
<dd>Best of luck with this one.<br><br>
<dd> <br><br>
<dd>
----------------------------------------------------------------------------<br>
<br>
<dd>Dana Orzel
Great Solar Works, Inc. <br><br>
<dd>C - 208.721.7003
<a href="mailto:dana@solarwork.com">dana@solarwork.com</a><br>
</b><br>
<dd>Idaho Contractor - # 028765 Idaho PV #
028374<br><br>
<dd>NABCEP # 051112-136
<a href="http://www.solarwork.biz">www.solarwork.biz</a><br><br>
<dd>"Responsible Technologies for Responsible People since
1988" <br>
</u><br>
<dd>P</b> Please consider the environment before printing this
email.<br><br>
<dd> <br><br>
<dd> <br><br>
<dd>From:</b> RE-wrenches
<<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">
re-wrenches-bounces@lists.re-wrenches.org</a>> On Behalf Of
</b>Drake<br>
<dd>Sent:</b> Thursday, August 23, 2018 2:37 PM<br>
<dd>To:</b> RE-wrenches
<<a href="mailto:re-wrenches@lists.re-wrenches.org">
re-wrenches@lists.re-wrenches.org</a>><br>
<dd>Subject:</b> [RE-wrenches] Forced air Furnace<br><br>
<dd> <br>
<dl><br>
<dd>Hello Wrenches,<br><br>
<dd>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.<br><br>
<dd>Thank you,<br><br>
<dd>Drake <br><br>
<dd>Drake Chamberlin<br>
<dd>Athens Electric LLC<br>
<dd>OH License 44810<br>
<dd>CO License 3773<br>
<dd>NABCEP Certified Solar PV <br>
<dd>740-448-7328<br>
</i>
<dd><a href="http://athens-electric.com/">http://athens-electric.com/</a>
<br><br>
</dl>
<dd> <br>
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