What is a Fine Air Filter in HVAC?
A fine air filter in HVAC (heating, ventilation, and air conditioning) systems is specifically designed to trap smaller particles, such as pollen, mold, and bacteria, from the air. These filters are typically placed downstream of the primary air filter to enhance air purification levels.
Also referred to as "Secondary Air Filters," fine air filters resemble primary filters but operate at a lower micron range of 1 to 5 microns, in contrast to primary filters, which have a higher dust-holding capacity.
Fine air filters are generally installed immediately after the primary air filters and offer several significant benefits, including: