The PLANT 350 uses a low-wattage fan located near the bottom of the unit to circulate the air through the system.

UV-C light inactivates microorganisms by damaging their DNA, leading to cell death. The UV lamp is housed in a special enclosure designed to maximize the amount of UV-C light that is transmitted through the system, while also protecting the lamp from physical damage and outside exposure. The UVC-Lamp is specifically designed for use in air purifiers and has a very high output rating. The lamp, which uses a standard screw-in base, can be easily replaced by unscrewing the top of the enclosure, and replacing the lamp. This UV-C light also powers Promethium’s next-generation photocatalytic oxidation (PCO), greatly expanding the Volatile Organic Compound (VOC) removal capabilities of the PLANT 350 by a factor of 80, compared to the market standard TiO2.

The PLANT 350 utilizes a high-efficiency anti-bacterial HEPA filter which offers 99.97% efficiency at 0.3 micrometers, and 99.99% efficiency at 0.12 micrometers. The filter also has a rating of MERV 12, which is equivalent to an efficiency rating of 12 on a scale of 1-20 (higher numbers correspond to more efficient filters). This is in addition to an activated carbon filter to ensure the most complete purification.