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option 1: Two seperated furnances and seperated control + e- L) o: F' C, i" T# E (for big house > 3000 ft)' Y3 {2 g! T, D. X- r
option 2: One furnance with Zone Control device / I+ X. n9 V% Y# w% x4 R( r% @ (three zones or fours zone will be good) - total efficiency will be higher- U- ~/ O- F$ z8 I% e5 h% n( [
# R% L# x8 i$ M4 k7 gTotal 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?5 v9 e% Q% i7 w2 C1 ]4 U
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option 1: Two seperated furnances and seperated control ( s. a, B: h* t2 g (for big house > 3000 ft) + e! F/ J+ ~) z$ e/ b1 {# Coption 2: One furnance with Zone Control device 5 i5 g( T# ^' i3 [% L& r2 g; h (three zone ... - @) F3 @# `7 z' o十年移民路_ 发表于 2011-3-29 06:36 [/quote]