【消委會】匹半變頻式分體冷氣機電費差異大近56% 評分5星貴價機最慳電 每年可慳$400

文: Kate Yeung
2021.04.15

即將又是迎接冷氣的季節,想慳電就自然要選擇能源效益高的冷氣。近日消委會就為大眾測試了14款俗稱「匹半」的變頻式分體冷氣機。假設每年在相同情況之下使用冷氣機,估算各樣本每年進行製冷所需的電費。結果發現,各樣本每年製冷所需電費由$657至$1023不等,但最高與最低的電費竟然相差$366。

消委會測試了14款變頻式分體冷氣機,聲稱製冷量為3.2千瓦至3.6千瓦,全部樣本的能源效益標籤均標示為1級,售價由$5980至$11980不等。當中4款包含基本安裝費,其餘需額外收費$1750至$11980不等,或視乎個別店舖而定。

假設每年使用冷氣機啟動製冷180天,每天12小時,製冷季節性總負載同樣為4000千瓦小時(kWh),並以每度電$1.2計算,估算出各樣本每年進行製冷所需的電費。各樣本中,每年製冷所需電費最低$657,最高$1023,兩者相差$366。

14款「匹半」變頻式分體冷氣機樣本中,如使用「日立Hitachi」(RAS-DX13HDK / RAC-DX13HDK)估算電費是$1023,是送風量最低及所需電費最高,機價較便宜,為$8330。如使用能源效益較高的「三菱重工Mitsubishi Heavy Industries」(SRK35ZSXH-S / SRC35ZSXH-S)估算電費是$657,是送風量最高及最省電的,機價亦是14款中最貴,售$11980。使用日立冷氣機比三菱冷氣機需要多付56%電費。而「大金Daikin」(FTXM36SV1N / RXM36SV1N)電費只需$737,「三星Samsung」(AR12TXHAAWKN / AR12TXHAAWKX)電費亦只需$807。

消委會指,實際製冷負載對耗電量影響極大,如果實際製冷需求高於上述假設,電費便會較高。同時有很多因素都會導致製冷需求增加,實際電費可能就會與上述假設有出入。每度電的電費視乎在電費帳單覆蓋期內的整體家居用電量,若整體家居用電量較高,每度電的電費或會較高。

資料來源:消委會

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