In-room or portable air-cleaning devices can remove dust, allergens, smoke, and viruses from a space. Most commercial devices will specify a clean air delivery rate (CADR), which is typically specified in terms of cubic feet per minute (CFM), litres per second (L/s), cubic meters per second (m3/s), or cubic meters per hour (m3/hr). If a space contains multiple air-cleaning devices, the total CADR for all the devices in the space can be combined and input to the platform.
Air-cleaning devices may utilize numerous types of technology (beyond filtration) that include ultraviolet germicidal irradiation (UVGI), ozone injection, oxidation, ionization, electrostatic precipitation, or others. ParticleOne advises caution with respect to air-cleaning technology. These systems often are brought to market without a universal method of test (MOT) from a trusted authority like ASHRAE. For these products, manufacturers are left to find their own path to demonstrate performance and assure users that they do not produce harmful byproducts. Some of these assessments are scientifically rigorous, while others are not.
ParticleOne endorses one type of air-cleaning devices provided by Delos, the Intellipure series. These devices have been rigorously tested to remove 99.997% of particles 0.3 microns in size, which is more efficient than the HEPA Standard testing efficiency requirement (US EPA). See the “Products & solutions” tab once simulations are complete for more information.