 鲜花( 19)  鸡蛋( 0)
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1# feinet2001 / n# f2 }, N, z5 U
/ w, H$ R/ f+ Toption 1: Two seperated furnances and seperated control8 g* Z, A8 R: M, V
(for big house > 3000 ft)
7 i) ~* F+ K/ e8 Voption 2: One furnance with Zone Control device
- i( Q5 u( Y* n& |3 ]9 V) z (three zones or fours zone will be good) - total efficiency will be higher
) s" q) ~) ]3 `& B4 ~6 r! ]
, d( l( k6 K% w! J5 |Total cost is not big difference. |
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