Mr. Cool Advantage 12,000 BTU 21.3 SEER2 Wall Mounted Heat Pump System (230V) - R454BMRCOOL A 12 HP WMAH 230D O & A 12 HP C 230D O Advantage 5th Gen 12,000 BTU 230V R 454B Ductless Mini Split Heat Pump System (Air Handler + Condenser) The MRCOOL A 12 HP WMAH 230D O & A 12 HP C 230D O Advantage 12k BTU 230V ductless system delivers year round comfort for rooms up to ~500 sq ft. Featuring eco friendly R 454B refrigerant with ~80% lower GWP than R 410A, it offers efficient, sustainable heating and cooling in a quiet, compact design. With