A high-quality residential air purifier typically lasts between 5 and 10 years, and in some cases even longer, provided the unit is constructed with a durable motor housing and receives regular, routine maintenance. However, while the main mechanical body and fan motor have a long operational lifespan, the internal filters are consumable components that require frequent replacement—pre-filters every few months, and true HEPA and carbon filters every 6 to 12 months depending on local pollution levels. Failing to replace clogged filters places excessive strain on the internal blower motor, which can cause premature mechanical failure and drastically shorten the overall lifespan of the appliance.
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