The HEPA System’s 3 Stage Filtration Process
The 3 stage filtration process is used to create a very effective filtration system. Each filter is independent and can be changed individually.
• Stage 1: Carbon pre-filter - The inexpensive carbon pre-filter removes larger particulates from the air, thus prolonging the life of the HEPA filter.
• Stage 2: HEPA - The HEPA filter removes 99.97% of particulates 0.3 micron and larger. The cleaned air then passes through the third stage filter.
• Stage 3: Inner Charcoal Filter - The inner charcoal filter is 1/2 an inch thick to give it plenty of surface area for removing chemicals and odors from the air.
Lennox HEPA-40, HEPA-60
AMAIRCARE Part # 95014-5