1#feinet2001 5 t" G. v! k* A2 k1 A 0 P! P/ w7 F6 F N$ S, y- hoption 1: Two seperated furnances and seperated control, J. X4 X3 S0 F8 t6 c: z
(for big house > 3000 ft) % B' @$ I, x3 A5 X7 j# moption 2: One furnance with Zone Control device 0 u( f' d0 R! @
(three zones or fours zone will be good) - total efficiency will be higher ! S6 X( o; t( \9 C4 i: A3 J1 [, f- e) K/ O* l. [% M
Total cost is not big difference.