You breathe in particles because they are everywhere. Some particles don’t come out of your lungs. That’s why they are important.
Airborne particles matter for air quality; both outside and inside. Some particles are so small that your lungs can’t breathe them out or expel them. These super small particles are referred to as non-respirable particles. These small particles are of the most concern for health.
These can be organic like mold, bacteria, and viruses; or inorganics like ozone, smoke, and air pollution.
Particles are separated into repairable and non-respirable groups. Non-repairable means it’s so small it gets stuck in your lungs. The chemical composition of particles also determines the effect they have on your health.
There are a lot of people flooding the market with particle sensing devices that only test for “course” (over 2.5 µg/m3) particles. Those sensors are significantly cheaper than the “fine” (under 2.5 µg/m3) particle sensors. We have tested a lot of different, low-cost sensors and most don’t work. We can’t recommend any of the current ones on the market.
There is an AI prediction of indoor air by street address here: Breezometer.
How to Lower the Particles You are Breathing
The best way to do that is with a true-HEPA only air purifier. You may be able to add a true-HEPA filter to your heating or HVAC system. Portable true-HEPAs work very well, also. You may want to consider adding a charcoal filter to the HEPA. The charcoal or carbon will trap vapors (gasoline, smoke, etc.)
Please don’t add any UV, ultrastatic, ion generator, or other. A true-HEPA with charcoal will not add anything to your indoor air – it will only remove particles.
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