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option 1: Two seperated furnances and seperated control8 A* `- f( C4 \
(for big house > 3000 ft) $ \, O. ?. N- N# l1 foption 2: One furnance with Zone Control device # `7 N" w% S! E0 D. [7 W2 d! R1 w
(three zones or fours zone will be good) - total efficiency will be higher, h! u8 ?2 O) R2 {4 o8 B0 [: o
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Total cost is not big difference.
Zone Control device, 会不会象他们说的,互相影响呢? 如果房子盖好后,再自行安装,容易实现吗?" e0 v% R8 c" h$ [' u
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option 1: Two seperated furnances and seperated control( H% ]5 J* e5 F1 S& D* q
(for big house > 3000 ft) ! D4 p% h& I" noption 2: One furnance with Zone Control device * A& D6 C: A( W. V' q: C& e
(three zone ... - x- f5 U5 ^( u% B十年移民路_ 发表于 2011-3-29 06:36 [/quote]