I just buy LG health plus inverter system 3 compressor a3uq186FA1, bmnc09 X2 unit , bmnc12 X1 free upgrade 0.5 inchi isolator copper pipe grade 23 5 yr workmenship warranty for $2499 at allbest during expo. But i wonder a3uq186 compressor is enough for 12k btu and 2 9k btu indoor unit ? any idea ?