Post #1799: Forest fire smoke, yet again. How good an air filter do you actually need?

 

In a nutshell:  There is no hard cutoff.  More air filtration is better.  But there are clearly diminishing returns to buying the ultra-high-end air filters.

The bottom line is that, when it comes to the current air quality alerts, some air filtration is a whole lot better than no air filtration.

Continue reading Post #1799: Forest fire smoke, yet again. How good an air filter do you actually need?