A HEPA air purifier is one that uses a High-Efficiency Particulate Air (HEPA) filter. Filters that qualify as HEPA are able to trap 99.97 percent of particles that are 0.3 microns or smaller. There are varying degrees of HEPA; H10-H12 are considered “True HEPA” and H13-H14 are considered medical-grade quality

Yes, our air purifiers are able to remove airborne pollutants like pollen, dust, bacteria, pet dander, smoke, mold spores, volatile organic compounds, and odors. But each product does have a maximum square footage it can handle, so proper sizing will be important to keep in mind for your intended use.

You might be surprised to hear this, but indoor air quality can often be even less healthy than outdoor air quality, even if you live in a city. The reason for this is that indoor air is often affected by different pollutants than outdoor ones. Things like pollen, allergens, and smoke can deeply affect your health, especially if you or someone in your family is vulnerable to air issues.Air purifiers address these issues by addressing the root of the problem: they remove and destroy these pollutants, turning your home into a place that can be healthier than even non-polluted outdoor areas.

CADR stands for Clean Air Delivery Rate, and it is standardized system for reporting the effectiveness of a particular air purifier in removing smoke, dust and pollen from the air. The higher the number the more effective the air purifier will be  

There are many misconceptions about HEPA technology. Most people think that HEPA filters work like a net. If a particle is smaller than the holes in the net, it gets through. However,  HEPA filters don’t work like nets. Particles less than 0.1 microns in size, and other nanoparticles, get captured by a scientific process in the HEPA filter called diffusion. Diffusion is extremely effective in trapping ultrafine (less than 0.01 microns) particulate matter. According to NASA, HEPA filters capture “virtually 100% of particulates.”

Because this is the weakest point in the filter’s performance, the HEPA specifications use the retention of particles near 0.3 microns to classify and test HEPA filters.

The H13 HEPA class specification is used in the European Union: European Standard EN 1822-1:2009, which defines several classes of HEPA filters by their retention at the given most penetrating particle size (MPPS). H13 certified HEPA filters remove at least 99.95% of air particles about 0.3 microns in diameter (most penetrating particle size).

An air change per hour translates to how many times an air purifier can clean a room in one hour. For example, 2 air changes per hour shows that an air purifier can clean a room once every 30 minutes. An allergy and asthma sufferer needs at least 4 air changes per hour, which means an air purifier can clean a room at least once every 15 minutes.

To clean an entire room, all of the air in the room needs to pass through the air cleaner’s filter. Air cleaners are rated by the amount of air moving through the filter. This rate is called CADR or Clean Air Delivery Rate. CADR measures the amount of particle-free air being delivered into the room. The higher the CADR rating, the larger the room size that an air cleaner can clean.