Hi,
I have 12 sqm high efficiency Sun Collectors on the roof connected to a 1000l hot water boiler and 4KWp PV Panels connected in two strings to my inverter which currently is feeding 100% in the Grid. I will add 6 KWp as an Island system next week.
The Mini Split AC is a simple none Inverter Unit with the factory filled in Gas in it (pumped down R410a). R410a is a Refrigerant which you can't buy in Germany without license. So, refills and Service have to be done by a certified technician.
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