Airthings 325 Corentium Home 2 vs Amazon Smart Air Quality Monitor

Airthings 325 Corentium Home 2 has the stronger profile: higher owner rating, a 5-year warranty versus 1 year, an on-device display and four smart home integrations. Amazon Smart Air Quality Monitor is much cheaper and covers more pollutant types, but it only works with Alexa and has no radon sensing.

What they detect. The Airthings unit is a radon monitor with temperature and humidity, the tool for basements and mitigation checks. The Amazon unit skips radon but tracks VOCs, PM2.5 particulates and carbon monoxide plus temperature and humidity, which suits kitchens, workshops and general living areas.

The Airthings 325 Corentium Home 2 runs about 3 years on two AA batteries, so it can sit anywhere radon collects, outlet or not. The Amazon Smart Air Quality Monitor has no battery and must stay plugged in over Micro USB near an outlet.

The Amazon Smart Air Quality Monitor does: it requires Alexa and an Echo device, with no Google Home, HomeKit, SmartThings, Home Assistant or IFTTT support. The Airthings 325 Corentium Home 2 works with Google Home, Alexa, Home Assistant and IFTTT via the Airthings app.

Choose Airthings 325 Corentium Home 2 if you need to monitor radon continuously with readable on-device results, a long 5-year warranty and flexible battery-powered placement. It is the safer long-term purchase of the two.

Choose Amazon Smart Air Quality Monitor if you live in the Alexa ecosystem and want cheap, responsive monitoring of VOCs, particulates and carbon monoxide, especially to automate a purifier or fan with Alexa routines. Remember it cannot detect radon and does not replace a certified CO alarm.