Airthings 325 Corentium Home 2 vs GoveeLife Smart Air Quality Monitor CO2 H5140

The Airthings 325 Corentium Home 2 comes out ahead overall, with a higher owner rating, a longer warranty and more smart home integrations (Google Home, Alexa, Home Assistant and IFTTT). The GoveeLife Smart Air Quality Monitor CO2 H5140 wins on typical price and on its alert configuration, so the better fit depends on whether radon or CO2 is the gas you actually need to watch.

They are built to measure different pollutants. The Airthings 325 Corentium Home 2 is a dedicated radon detector that also tracks temperature and humidity using alpha-spectrometry sensing. The GoveeLife Smart Air Quality Monitor CO2 H5140 does not measure radon at all; instead it uses a photoacoustic sensor to track carbon dioxide.

The GoveeLife Smart Air Quality Monitor CO2 H5140 has the edge here, with a customizable CO2 threshold that triggers a buzzer, app notification and email report, plus temperature and humidity alerts. The Airthings 325 Corentium Home 2's listed alert support is limited to air quality alerts.

The Airthings 325 Corentium Home 2 runs on 2x AA batteries, so it can be placed anywhere without an outlet. The GoveeLife Smart Air Quality Monitor CO2 H5140 has no battery option and needs a mains outlet over USB-C for continuous monitoring.

Homeowners who want continuous, portable radon testing with a simple, jargon-free display, or anyone validating a radon mitigation system, should choose the Airthings 325 Corentium Home 2.

Anyone focused on ventilation and CO2 buildup in a home office, bedroom or nursery, who wants a large display and automation links to a fan or humidifier, should pick the GoveeLife Smart Air Quality Monitor CO2 H5140 instead.