What is the primary purpose of a removable pre-filter on an air purifier?

Answer

To trap larger particles like pet hair and heavy dust

A pre-filter acts as the first line of defense in an air purifier, designed to catch large debris such as pet hair, lint, and thick dust. By capturing these bulky contaminants before they reach the main, more expensive filter, the pre-filter prevents clogging and significantly extends the operational lifespan of the main filtration media. Users can often maintain these pre-filters by washing or vacuuming them, which contributes to more efficient long-term maintenance of the unit.

What is the primary purpose of a removable pre-filter on an air purifier?
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