Airthings
Airthings Wave Plus
$230
Airthings Wave Plus Overview
The Airthings Wave Plus is a premium CO2 monitor that tracks CO2, Temperature, Humidity, Radon, VOC and Atmospheric Pressure. It uses a NDIR sensor — the technology we recommend for reliable CO2 readings — with a stated accuracy of ±50 ppm across a 400-5000 ppm measurement range. At $230, it is aimed at home use and radon-prone homes.
In day-to-day use, the Wave Plus offers no built-in display — readings are accessed through a connected app or dashboard, plus Bluetooth connectivity for logging trends and setting alerts, plus a stationary design (1.5 years (2x AA)) best suited to continuous monitoring in a fixed location.
Best For
Full Specifications
| Price | $230 |
| Sensors | CO2, Temperature, Humidity, Radon, VOC, Atmospheric Pressure |
| Sensor Type | NDIR |
| Connectivity | Bluetooth |
| Display | No |
| Portable | No |
| Battery Life | 1.5 years (2x AA) |
| CO2 Accuracy | ±50 ppm |
| CO2 Range | 400-5000 ppm |
Pros & Cons
Pros
- ✓True NDIR CO2 sensor (not an eCO2 estimate)
- ✓Multi-parameter monitoring: CO2, Temperature, Humidity, Radon, VOC, Atmospheric Pressure
Cons
- ✗No onboard display — requires the app to check readings
- ✗Bluetooth only — no remote access when you are away from home
- ✗Not designed for portable use
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Frequently Asked Questions
Is the Airthings Wave Plus accurate?+
The Airthings Wave Plus uses a NDIR sensor with a stated accuracy of ±50 ppm over a range of 400-5000 ppm. NDIR is the proven reference technology for consumer CO2 monitoring.
What does the Airthings Wave Plus measure?+
It measures CO2, Temperature, Humidity, Radon, VOC, Atmospheric Pressure. CO2 is the key metric for judging ventilation — levels below 800 ppm indicate well-ventilated air.
Does the Airthings Wave Plus need WiFi?+
No. The Airthings Wave Plus uses Bluetooth for syncing with the app.
Is the Airthings Wave Plus worth it in 2026?+
At $230, the Airthings Wave Plus is a solid choice for home use and radon-prone homes. Its NDIR sensor puts it ahead of cheaper eCO2 estimators. Compare alternatives in our monitor comparison tool before buying.