1#feinet2001 9 E* B! a9 B7 s3 i/ d& o. z8 K ! @8 v: ^7 [1 `4 F4 V) J# A; }option 1: Two seperated furnances and seperated control: g3 h0 w4 @( g1 m% v+ G; c% v" I
(for big house > 3000 ft) " c3 J; l( B9 w, ?% ^$ Q' toption 2: One furnance with Zone Control device 7 B8 H! K* Q, F: g+ @ |. l8 i
(three zones or fours zone will be good) - total efficiency will be higher2 f& ^! E: ?! K2 s
/ [, d6 n, P0 Y; @. O2 N# K" NTotal cost is not big difference.