Connecting Air Quality to Your Smart Home
Modern CO2 monitors can do far more than display a number on a screen. With smart home integration, your monitor can automatically trigger fans, open smart vents, send phone alerts, and log data to cloud dashboards. Here is how to bring air quality into your connected home.
Apple HomeKit
HomeKit-compatible monitors appear in the Apple Home app alongside your lights, locks, and thermostats. You can create automations like:
- If CO2 exceeds 1,000 ppm, turn on the bedroom fan
- If CO2 drops below 600 ppm, close the smart window actuator
Popular HomeKit-compatible options include the Qingping Air Monitor Lite and the Airthings View Plus (via a HomeKit bridge). For more options, see our best home monitors.
Amazon Alexa
Several monitors expose CO2 readings to Alexa routines. You can create routines that announce when levels are high. The Airthings View Plus and INKBIRD IAM-T1 both support Alexa natively.
Google Home and Home Assistant
Monitors with WiFi often support Google Home via third-party integrations. For the most flexibility, Home Assistant is the power-user platform. It supports:
- Aranet4 (via Bluetooth proxy)
- Airthings (cloud API and Bluetooth)
- Any Zigbee or Z-Wave sensor
- Custom DIY monitors built with Arduino
Building Useful Automations
Here are practical automations worth setting up:
- Ventilation alerts — push notification when any room exceeds 1,000 ppm
- Fan control — automatically activate exhaust or ceiling fans at 800 ppm
- Dashboard — display real-time readings on a tablet mounted in the hallway
- Sleep mode — bedroom fan activates if nighttime CO2 exceeds 800 ppm
- Data logging — store readings for trend analysis over weeks and months
For step-by-step automation setup, read our guide on setting up CO2 alerts and automations. Use the CO2 calculator to determine target thresholds for each room.