1#feinet2001 & t% R* i: K: t$ l: G; _/ @( }, k; N/ i( |
option 1: Two seperated furnances and seperated control 0 U0 I: E+ H0 h: g+ C (for big house > 3000 ft) e7 A2 P, W* S4 c, P- L9 a
option 2: One furnance with Zone Control device 2 }3 M: l& T* } (three zones or fours zone will be good) - total efficiency will be higher Z* H# b8 B/ n' Q
. @$ C% m: o. I2 @1 ^
Total cost is not big difference.