You can start thinking about replacing your air conditioner once it’s 10 years old. 然而, it can go significantly longer than that with proper upkeep — meaning as long as your unit stays efficient, technology hasn’t left it behind, 和 it doesn’t dem和 frequent repairs. 你可以期望一个单位使用大约15年，如果你照顾它, 尽管有些型号的寿命可能更长, 尽管维修更频繁，而且效率显著降低.