夏日炎炎不少人留在家都會開冷氣，剛開冷氣覺得不夠涼快時，都會立即調低溫度，原來此舉未必有效同時用電量增加。日本節目《くりぃむしちゅーのハナタカ！優越館》就曾經進行實測，發現做1個簡單步驟即可以2分鐘降溫又慳電。
日本節目《くりぃむしちゅーのハナタカ！優越館》就以冷氣效率問題為主題進行實測，在高達36°C的房間進行實驗，再將冷氣調至18°C，看看何時室內溫度才能下降！
結果發現約7分鐘後，室內溫度才顯著下降
然後，節目組再嘗試以另一個方法進行實測，結果僅2分鐘後房間溫度明顯降溫：
先將冷氣溫度調校至28°C
並且將風量調較至最大
經過2分鐘後，房內的人體溫和傢俬溫度明顯下降，結論證明只要將風量開大，令冷氣對流就可以快速降溫和慳電
另外亦建議在冷氣房睡覺時，可以開風扇吹著牆壁或天花製造出柔和微風
來源：くりぃむしちゅーのハナタカ！優越館
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