I bought IQAir AirVisual Pro (indoor), because California’s AQMD[0] tested it as fairly accurate (and, let’s be honest, because I have been relying on their app).
It cost more than $400, and it lasted less than half a year.
The unit is made of flimsy off-white plastic, has an insanely bright blue-white display that cannot be dimmed enough (not fit for the bedroom, at all), slow menu with useless options, and (in 2024!) that weird micro USB connector. That connector is what broke after four months.
Turns out, precision is not everything.
[0] Apparently, California government has a lab that tests various consumer air quality monitors and publishes results (http://www.aqmd.gov/aq-spec/evaluations/criteria-pollutants).
Despite having dozens of evaluations, they do not seem to have tested AirGradient or Airthings or their respective sensors. I wonder if they take requests?
It cost more than $400, and it lasted less than half a year.
The unit is made of flimsy off-white plastic, has an insanely bright blue-white display that cannot be dimmed enough (not fit for the bedroom, at all), slow menu with useless options, and (in 2024!) that weird micro USB connector. That connector is what broke after four months.
Turns out, precision is not everything.
[0] Apparently, California government has a lab that tests various consumer air quality monitors and publishes results (http://www.aqmd.gov/aq-spec/evaluations/criteria-pollutants).
Despite having dozens of evaluations, they do not seem to have tested AirGradient or Airthings or their respective sensors. I wonder if they take requests?