HEPA Scrubber Filter Life

Estimated filter days from CFM, runtime, and particulate category.

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Formula and source

Pre-filter loading: g per CFM-hour benchmarks from manufacturer technical bulletins; lifespan_hr = filter_capacity_g / (loading_rate × CFM). Particulate-load category low / medium / high adjusts the rate.

Manufacturer technical bulletins (Abatement Technologies, Phoenix, Dri-Eaz) by name; ANSI/ASHRAE 52.2 (Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size) by name.

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