<div dir="ltr">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. </div><br><div class="gmail_quote"><div dir="ltr">On Thu, Aug 23, 2018 at 6:44 PM Dana <<a href="mailto:dana@solarwork.com">dana@solarwork.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" link="blue" vlink="purple"><div class="m_-6671048453900893043WordSection1"><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Century Gothic",sans-serif;color:black">Drake,<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Century Gothic",sans-serif;color:black">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.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Century Gothic",sans-serif;color:black">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.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Century Gothic",sans-serif;color:black">The new ECM (electronically commutated motors) pump motors are basically at DC permanent magnet motor power draws [Taco & Grundfoss] these days.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Century Gothic",sans-serif;color:black"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Century Gothic",sans-serif;color:black">Best of luck with this one.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Century Gothic",sans-serif;color:black"><u></u> <u></u></span></p><div><p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:#002060">----------------------------------------------------------------------------<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:black">Dana Orzel Great Solar Works, Inc.</span><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:black"> </span><span style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:black"><u></u><u></u></span></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:black">C - 208.721.7003 <a href="mailto:dana@solarwork.com" target="_blank">dana@solarwork.com</a><u></u><u></u></span></b></p><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:black">Idaho Contractor - # 028765 Idaho PV # 028374<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:black">NABCEP # 051112-136 <a href="http://www.solarwork.biz" target="_blank"><span style="color:blue">www.solarwork.biz</span></a><u></u><u></u></span></p><p class="MsoNormal"><u><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:black">"Responsible Technologies for Responsible People since 1988" </span></u><u><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:black"><u></u><u></u></span></u></p><p class="MsoNormal" style="background:white"><b><span style="font-size:18.0pt;font-family:Webdings;color:green">P</span></b><span style="font-family:"Helvetica",sans-serif;color:navy"> </span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:green">Please consider the environment before printing this email.</span><span style="font-family:"Helvetica",sans-serif;color:black"><u></u><u></u></span></p><p class="MsoNormal"><span style="color:black"><u></u> <u></u></span></p></div><p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Century Gothic",sans-serif;color:black"><u></u> <u></u></span></p><div><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal" style="margin-left:.5in"><b>From:</b> RE-wrenches <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>> <b>On Behalf Of </b>Drake<br><b>Sent:</b> Thursday, August 23, 2018 2:37 PM<br><b>To:</b> RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>><br><b>Subject:</b> [RE-wrenches] Forced air Furnace<u></u><u></u></p></div></div><p class="MsoNormal" style="margin-left:.5in"><u></u> <u></u></p><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><p class="MsoNormal" style="margin-left:.5in">Hello Wrenches,<br><br>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>Thank you,<br><br>Drake <br><br>Drake Chamberlin<br><i>Athens Electric LLC<br>OH License 44810<br>CO License 3773<br>NABCEP Certified Solar PV <br>740-448-7328<br></i><a href="http://athens-electric.com/" target="_blank">http://athens-electric.com/</a> <u></u><u></u></p></blockquote><p class="MsoNormal" style="margin-left:.5in"><u></u> <u></u></p></div></div>_______________________________________________<br>
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