AirPura C400 Air Purifier

This unit is specifically engineered for chemical adsorption, not dust removal. While it includes a HEPA-Barrier filter for larger particles, its primary strength is the extra-large carbon bed designed to neutralize over 4,000 types of airborne chemicals, VOCs, and odors.

The C400 is designed to cover up to 1,000 square feet. Keep in mind that effectiveness depends on your fan speed setting, as higher speeds provide more air changes per hour.

No, it uses a HEPA-Barrier filter. This is optimized for larger particles and is specifically designed to work in tandem with the carbon bed to handle gases and VOCs, rather than filtering out ultrafine particulates like a medical-grade HEPA filter would.

At its lowest setting, the unit operates at 32 decibels, which is very quiet and comparable to a whisper or a very soft hum. However, at its highest setting, the sound level increases to 52 decibels, which is more noticeable.

The unit features a cleanable pre-filter, which you should vacuum or wash periodically to extend the life of the main filters. The main carbon bed and HEPA-Barrier filter will eventually need replacement, though the frequency depends on your specific air quality and usage.

For residential use, the C400 is backed by a 5-year warranty on parts and a 10-year warranty on labor. This is a significant commitment from the manufacturer that covers the longevity of the motor and internal components.