1#feinet2001 + [4 f- o; y+ j3 }+ t/ k4 g E8 w+ s7 Q6 ]+ D) y$ R- B6 Joption 1: Two seperated furnances and seperated control! U( w" u( Q7 X
(for big house > 3000 ft)$ ?' h/ R$ O( f" t+ ] M
option 2: One furnance with Zone Control device - M* G! O4 f& S0 A4 X
(three zones or fours zone will be good) - total efficiency will be higher* F/ n' }5 K* H# M
% B8 |8 M# y8 f" K
Total cost is not big difference.