[RE-wrenches] EG4 Mini Split

[John Blittersdorf]

On Thu, Jun 19, 2025 at 3:10 PM James Jarvis via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> 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.
>
>
> 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.
>
> thank you,
>
> -James Jefferson Jarvis
> APRS World, LLC
> +1-507-454-2727
>
> (apologies for the brevity and spelling...from my phone)
>
> On Thu, Jun 19, 2025, 2:02 PM Jason Szumlanski via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> 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.
>>
>>
>> Jason Szumlanski
>> Principal Solar Designer | Florida Solar Design Group
>> NABCEP Certified Solar Professional (PVIP)
>> Florida State Certified Solar Contractor CVC56956
>> Florida Certified Electrical Contractor EC13013208
>>
>>
>> On Thu, Jun 19, 2025 at 2:35 PM Dave Angelini Offgrid Solar via
>> RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
>>
>>> 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.
>>> Definitely run AC to it from the main system. Getting close to the
>>> solstice and solar can power this well into the evening😎
>>>
>>>
>>>
>>> *Dave Angelini Offgrid Solar
>>> "we go where powerlines don't"
>>>    <http://members.sti.net/offgridsolar/>https://offgridsolar1.com/ <https://offgridsolar1.com/>  <http://members.sti.net/offgridsolar/>
>>> e-mail  offgridsolar at sti.net <offgridsolar at sti.net>
>>> text 209 813 0060*
>>>
>>>
>>> On 2025-06-19 10:53 am, William Miller via RE-wrenches wrote:
>>>
>>> There are two reasons I could see:
>>>
>>>
>>>
>>> ·        Your existing PV rating is too small.
>>>
>>> ·        You do not have any existing PV and you do not want to incur
>>> more utility expenses.
>>>
>>>
>>>
>>> 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
>>>
>>>
>>>
>>> William
>>>
>>>
>>>
>>> Miller Solar
>>>
>>> 17395 Oak Road, Atascadero, CA 93422
>>>
>>> 805-438-5600
>>>
>>> www.millersolar.com
>>>
>>> CA Lic. 773985
>>>
>>>
>>>
>>>
>>>
>>> *From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
>>> Behalf Of *Jason Szumlanski via RE-wrenches
>>> *Sent:* Thursday, June 19, 2025 10:25 AM
>>> *To:* RE-wrenches
>>> *Cc:* Jason Szumlanski
>>> *Subject:* Re: [RE-wrenches] EG4 Mini Split
>>>
>>>
>>>
>>> 8
>>>
>>> 8

> hours.
>>>
>>>
>>>
>>> i  u
>>>
>>>
>>>
>>>
>>> Jason Szumlanski
>>>
>>> Principal Solar Designer | Florida Solar Design Group
>>> NABCEP Certified Solar Professional (PVIP)
>>> Florida State Certified Solar Contractor CVC56956
>>>
>>> Florida Certified Electrical Contractor EC13013208
>>>
>>>
>>>
>>> On Thu, Jun 19, 2025, 6:15 AM Jason Szumlanski <
>>> jason at floridasolardesigngroup.com> wrote:
>>>
>>> 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.
>>>
>>>
>>>
>>> Jason Szumlanski
>>>
>>> Florida Solar Design Group
>>>
>>>
>>>
>>>
>>>
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