<div dir="auto"><div>In Minnesota we are essentially limited to 40 kW of grid tied net metered solar. But there is no limit on non-grid connected. So if I had mini splits that were directly solar powered that would reduce my electricity consumption so I could sell it instead of use it.</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">In my case with my ICF construction house that weighs a million pounds the PV direct air conditioning would be great because all we need to do is keep the average interior temperature low and the house has enough thermal mass too balance things out.</div><div><br></div><div data-smartmail="gmail_signature">thank you,<br><br>-James Jefferson Jarvis <br>APRS World, LLC<br>+1-507-454-2727<br><br>(apologies for the brevity and spelling...from my phone)</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Jun 19, 2025, 2:02 PM Jason Szumlanski via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">I can see the redundancy reason. There does not seem to be an economic reason to do this, especially if you are on-grid or already have a suitably sized off-grid or backup system. Just use a regular mini-split seems more logical.</div><br clear="all"></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><br>Jason Szumlanski<div><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Principal Solar Designer | Florida Solar Design Group</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">NABCEP Certified Solar Professional (PVIP)</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Florida State Certified Solar Contractor CVC56956</span></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif">Florida Certified Electrical Contractor EC13013208</font></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 19, 2025 at 2:35 PM Dave Angelini Offgrid Solar via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="font-size:12pt;font-family:Verdana,Geneva,sans-serif">
<p>The EG4 is not a bad split. Reason my client wanted it was a redundant cooling back-up if his battery/inverter/solar went down.</p>
<div id="m_8702850885172627353m_1241480518608370902signature">Definitely run AC to it from the main system. Getting close to the solstice and solar can power this well into the evening<span style="font-size:18pt">😎</span><br>
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<pre><strong><span style="font-size:small">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" rel="noopener noreferrer" target="_blank">  </a><a style="color:blue;font-size:11px;font-family:"Lucida Grande",Verdana,Arial,Helvetica,sans-serif;font-weight:400;background-color:rgb(255,255,255)" href="https://offgridsolar1.com/" rel="noopener noreferrer noreferrer" target="_blank"><span style="font-size:12pt">https://offgridsolar1.com/</span></a><a href="http://members.sti.net/offgridsolar/" rel="noopener noreferrer" target="_blank"> </a>
e-mail  <a href="mailto:offgridsolar@sti.net" target="_blank" rel="noreferrer">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
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<p id="m_8702850885172627353m_1241480518608370902reply-intro">On 2025-06-19 10:53 am, William Miller via RE-wrenches wrote:</p>
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<p><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)">There are two reasons I could see:</span></p>
<p><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)"> </span></p>
<p><span style="font-family:Symbol;color:rgb(31,73,125)"><span>·<span style="font:7pt "Times New Roman"">        </span></span></span><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)">Your existing PV rating is too small.</span></p>
<p><span style="font-family:Symbol;color:rgb(31,73,125)"><span>·<span style="font:7pt "Times New Roman"">        </span></span></span><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)">You do not have any existing PV and you do not want to incur more utility expenses.</span></p>
<p><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)"> </span></p>
<p><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)">I do see a real limitation to direct-DC air conditioning (which I think is what we are discussing):  No AC when the sun is not high in the sky.  That alone makes this impractical</span></p>
<p><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)"> </span></p>
<p><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)">William</span></p>
<p><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)"> </span></p>
<p><span style="font-family:Arial,"sans-serif";color:rgb(31,73,125)">Miller Solar</span></p>
<p><span style="font-family:Arial,"sans-serif";color:rgb(31,73,125)">17395 Oak Road, Atascadero, CA 93422</span></p>
<p><span style="font-family:Arial,"sans-serif";color:rgb(31,73,125)">805-438-5600</span></p>
<p><span style="font-family:Arial,"sans-serif";color:rgb(31,73,125)"><a href="http://www.millersolar.com/" rel="noopener noreferrer noreferrer" target="_blank"><span style="color:blue">www.millersolar.com</span></a></span></p>
<p><span style="font-family:Arial,"sans-serif";color:rgb(31,73,125)">CA Lic. 773985</span></p>
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<p><strong><span style="font-size:10pt;font-family:Tahoma,"sans-serif"">From:</span></strong><span style="font-size:10pt;font-family:Tahoma,"sans-serif""> RE-wrenches [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" rel="noreferrer noreferrer" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>] <strong>On Behalf Of </strong>Jason Szumlanski via RE-wrenches<br><strong>Sent:</strong> Thursday, June 19, 2025 10:25 AM<br><strong>To:</strong> RE-wrenches<br><strong>Cc:</strong> Jason Szumlanski<br><strong>Subject:</strong> Re: [RE-wrenches] EG4 Mini Split</span></p>
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<p>I guess the secondary question is why would anyone use this system anyway in a grid interconnected environment. The only rationale I could see is to have some level of air conditioning when the sun is shining without having to go through the expense of adding a hybrid inverter and batteries. But by the time you install solar panels with a rapid shutdown system, the return on that investment seems terrible considering that much of the solar energy generated will be wasted unless you somehow need maximum cooling from this unit 365 days a year during the daylight hours. </p>
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<p><br>Jason Szumlanski</p>
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<p><span style="font-size:10pt;font-family:Helvetica,"sans-serif";color:rgb(51,51,51)">Principal Solar Designer | Florida Solar Design Group<br>NABCEP Certified Solar Professional (PVIP)<br>Florida State Certified Solar Contractor CVC56956</span></p>
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<p><span style="font-family:Helvetica,"sans-serif";color:rgb(51,51,51)">Florida Certified Electrical Contractor EC13013208</span></p>
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<p>On Thu, Jun 19, 2025, 6:15 AM Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" rel="noreferrer noreferrer" target="_blank">jason@floridasolardesigngroup.com</a>> wrote:</p>
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<p>I'm getting requests to install 4-6 panels for these mini-splits. I'm saying no so far, but it got me thinking... What are people doing for rapid shutdown for these systems? I can't see them being exempt. The manual is silent on the issue. It just shows a DC isolator from the panels to the point of connection in the unit. </p>
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<p>Jason Szumlanski </p>
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<p>Florida Solar Design Group </p>
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