1#feinet2001 6 S7 F+ H9 \# n6 D9 G 4 z: s! L! j+ z) s8 F1 Z- roption 1: Two seperated furnances and seperated control1 B- }# e: \" C* _
(for big house > 3000 ft) 7 t; t* m, A5 u. P6 ^8 A" foption 2: One furnance with Zone Control device # o% s |' k0 O; Z$ r5 q. C
(three zones or fours zone will be good) - total efficiency will be higher / A. a$ a4 r5 s. \3 e, w+ d. C7 A$ T8 Y ( Z. q- ~) M) b* b8 yTotal cost is not big difference.