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2026-10-26 · 3 min read

Cabin Air Filter — How Often to Change It and What Happens If You Don't

The cabin filter cleans the air coming through your AC vents. A clogged one reduces airflow, makes cooling less effective, and lets dust and allergens blow straight at you.

Cabin Air Filter — How Often to Change It and What Happens If You Don't

车内冷气滤芯(Cabin Air Filter,也叫空调滤芯或花粉滤芯)负责过滤进入车厢空调系统的空气,拦截灰尘、花粉、细菌和微小颗粒。

多久换一次?

大多数车厂建议每 **15,000–20,000 km** 或每 **1 年** 更换一次,以先到为准。

马来西亚空气质量在某些时期(雾霾季)较差,城市行驶灰尘也多,建议不要超过 15,000 km。

如果经常在工地、泥土路或雾霾严重地区行驶,缩短到 10,000 km 更换。

不换会有什么问题?

**风量变小**:滤芯堵塞后,通过的空气量减少,出风口风力明显变弱。

**冷气效果变差**:风量不足,冷气无法有效降温,引擎负担反而增加。

**车内空气质量变差**:过滤不了的灰尘、细菌、霉菌孢子直接吹进车厢。

**霉味来源之一**:脏滤芯积累的灰尘和湿气是滋生霉菌的温床,是车内异味的常见原因。

滤芯在哪里?

大多数车型在手套箱后方(副驾座杂物箱拆开后面),或在引擎舱蓄电池旁边。

不同车型位置不同,可以查车主手册确认。部分车型可以自行更换,无需专业工具。

怎么判断该换了?

取出滤芯检查——颜色从白色变成灰黑色,或者可以看到明显的灰尘积累。

如果轻拍滤芯有大量灰尘飞出,肯定该换了。

不用等到冷气效果变差才换——被动换和主动保养差别很大。

普通滤芯 vs 活性炭滤芯

**普通纸质滤芯**:过滤灰尘颗粒,价格便宜。

**活性炭滤芯**:额外吸附气味(如尾气、PM2.5、化学气味),价格稍高,但在马来西亚雾霾季效果明显更好。

如果对空气质量有要求或有鼻敏感,建议选活性炭滤芯。

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