AirSoap X3 uses TPA (Two-Pole Active) filtration, powered by Airdog. Instead of trapping particles in a filter the way HEPA does, TPA gives each particle an electric charge and destroys it in an ionic field, then collects what's left on washable metal plates. Two practical consequences: it captures particles down to 14.6 nanometers — roughly 20 times finer than HEPA's floor — and there are no replacement filters to buy. When the plates fill up, you rinse them and put them back. The X3 covers rooms up to 860 sq ft with smart auto mode, delivers 120 CFM of clean air, and clears a 425 sq ft room in about 30 minutes. It runs at about 30 dB on its low setting and includes a motion-sensing night light. A five-stage process finishes with a catalytic layer that addresses odors, VOCs, and trace ozone.