Ionic, HEPA, carbon, and UV light air replacement filter for fresh air are commonly used in the industrial, commercial, and medical sectors.

Ionic Air Filters

Also called air ionizers, ionic air filters rely on voltage to charge air molecules. Typically, they produce negatively charged ions, also called anions, which then attract particles in the air, in much the same way as static electricity.

HEPA Filter Types

HEPA (high-efficiency particulate absorbing) filters are stronger and more effective than ionic air filters, and are therefore preferred by sensitive applications – HEPA filters can remove up to 99.97 percent of airborne particles, making them extremely effective air sanitizers. The filters are primarily comprised of fiberglass fiber mats, which trap particles as an air stream flows through.

HEPA filters trap particles using several different approaches. First, they intercept particles as the air flows through the filter, and particles within close proximity to a fiber are caught and trapped. Diffusion is a process that uses gas collision to separate the smallest particles, slowing them down as they pass through the filter and increasing their chances of getting caught by a fiber.

Carbon Air Filters

Carbon can be treated with oxygen, which opens the carbon’s pores making it highly absorbent. After this treatment, carbon is said be activated because it can readily be used to absorb particles and trap odors. Carbon air filters use activated carbon to trap chemicals and gases, and can also filter cigarette smoke. As the air passes through the filter, the activated carbon absorbs the odors and gasses and neutralizes them.

UV Light Air Filter Types

Ultraviolet light air replacement filter for Flair use a reaction that occurs when titanium dioxide is exposed to UV light. As the air stream encounters the photochemical process, harmful particles, such as mold and bacteria, are neutralized. High-intensity UV (240-280 nm) is strong enough to break down most carbon-based organic compounds; making UV light air filters a good companion to HEP filters in medical applications.