How Many Solar Panels for a Mini Split 12000 BTU?

Rule-of-thumb estimate using typical wattage and usage hours. Fine‑tune with our calculators.

A typical Mini Split 12000 BTU uses around 1500 W. If you run it for 8 h/day, that’s roughly 12.0 kWh/day. With about 5 peak sun hours and a realistic 20% system derate, you’d need approximately 8 × 400 W panels (≈ 3.00 kW of array).

👉 Try the Panel Sizing Calculator to plug in your exact sun hours and system losses.

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