估計 DFW 不需要 heat pump, so your price is cheaper, not a surprise. his should be heat pump.
AC is cheaper, heat pump will be at least 50% more costly
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恕俺孤陋寡聞,一直沒弄清楚DFW是哪裏 :P
-canyonbear-
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01/12/2012 postreply
10:22:51
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網上看到有說法是普通製冷空調與熱泵的區別僅在於熱泵有個翻轉閥門,可轉換熱量移動方向
-canyonbear-
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01/12/2012 postreply
11:02:39