Airthings Wave Mini vs Aranet4 HOME

The Aranet4 HOME wins overall, thanks to a higher owner rating, up to 4 years of battery life, an always-on E-Ink display and broader sensor coverage led by reference-grade CO2. The Airthings Wave Mini is cheaper, has a longer 5-year warranty and plugs into more platforms, but it does not measure CO2.

The core sensor. The Aranet4 HOME is a dedicated CO2 monitor (plus temperature, humidity and pressure) with an NDIR sensor, while the Airthings Wave Mini measures VOCs, temperature, humidity and mold risk and has no CO2 sensor. They target different pollutants.

The Aranet4 HOME on both counts. It runs up to 4 years on two AA cells and has an always-on E-Ink display, whereas the Airthings Wave Mini runs about 2 years and has no screen, relying on its app.

The Airthings Wave Mini. It works with Google Home, Alexa, Home Assistant and IFTTT, while the Aranet4 HOME integrates only with Home Assistant and otherwise runs standalone over Bluetooth.

Anyone focused on CO2 and ventilation who wants accurate, portable readings, long battery life and an always-on display, at home, in an office or classroom, or while traveling.

Budget buyers who want to track VOCs and mold risk rather than CO2, value a long 5-year warranty, and want to tie the sensor into Google Home, Alexa, Home Assistant or IFTTT.