[jtap]

Not sure if it's the best but I recently bought a "Airthings 2960 View Plus - Radon & Air Quality Monitor". Choosing the correct app and setup was a bit annoying, but not too bad. I think setup was about an hour once done. Also the phone app wanted to read results for a week or so before displaying some info. The device has a screen that will show you the current values.

I purchased the device because I was a bit worried about radon and other garbage that I might be breathing while working in my basement office. Radon and other data points were not a problem. Turns out C02 was more my problem. It's pretty surprising how quickly that number rises with a closed door. I believe I can attribute the tiredness with the C02 levels. Having history correlates with when I'm in the basement office, and opening a window, it's a walkout basement and I have windows, decreases C02 stat pretty quickly.

Overall I'm happy with my purchase, and I'm considering buying another one for the ground level of the house.

[bradknowles]

On the Home Performance channel on YouTube, the AirThings View Plus is the top model recommended by Corbett. And you see it in his own home. It's one of the only devices I've been able to find that can do PM2.5 as well as CO2 and also Radon.

I'm buying them for my own home.