The H13 True HEPA filter effectively removes unwanted airborne particles in the home with four different filtration levels. The H13 True HEPA filtration process consists of a pre-filter, NanoGuard filter, activated carbon filter, and an internal filter. The filter's lifespan is approximately 6 to 12 months, depending on usage and exposure to polluted air.

The H13 True HEPA features a four-stage structure:

1. Pre-filter: Retains larger airborne particles such as dust, pollen, and mites.
2. NanoGuard filter: Purifies the air of particles as small as 0.1 μm with an efficiency of 99.99%. It also cleans the air of airborne particles such as dust, pollen, bacteria, mold, and other harmful substances.
3. Activated carbon layer: Neutralizes the air of volatile organic compounds (TVOC), including invisible smoke odors, viruses, and formaldehyde, which can cause serious health effects.
4. Internal filter: Removes residual particles that have not been filtered out in the previous processes.