Aranet Aranet4 Home vs Airthings Wave Plus: Which Should You Buy?
A spec-by-spec comparison of the Aranet Aranet4 Home ($200) and the Airthings Wave Plus ($230) — accuracy, sensors, connectivity, and which one fits your situation.
Quick Verdict
The Aranet Aranet4 Home is $30 cheaper; the Airthings Wave Plus tracks more parameters (6 vs 4); the Aranet Aranet4 Home is the portable option.
Choose the Aranet Aranet4 Home if you want to spend less, or you will carry it between rooms or when travelling, or you want readings at a glance without an app.
Choose the Airthings Wave Plus if you want the fuller picture (CO2, Temperature, Humidity, Radon, VOC, Atmospheric Pressure).
Specs Side by Side
| Feature | Aranet Aranet4 Home | Airthings Wave Plus |
|---|---|---|
| Price | $200 | $230 |
| Sensors | CO2, Temperature, Humidity, Atmospheric Pressure | CO2, Temperature, Humidity, Radon, VOC, Atmospheric Pressure |
| Sensor Type | NDIR | NDIR |
| CO2 Accuracy | ±50 ppm | ±50 ppm |
| CO2 Range | 0-9999 ppm | 400-5000 ppm |
| Connectivity | Bluetooth | Bluetooth |
| Display | Yes | No |
| Portable | Yes | No |
| Battery Life | 2+ years | 1.5 years (2x AA) |
Green highlights the stronger spec where there is a clear winner.
Frequently Asked Questions
Which is better, the Aranet Aranet4 Home or the Airthings Wave Plus?+
The Aranet Aranet4 Home is $30 cheaper; the Airthings Wave Plus tracks more parameters (6 vs 4); the Aranet Aranet4 Home is the portable option. Choose the Aranet Aranet4 Home if you want to spend less, or you will carry it between rooms or when travelling, or you want readings at a glance without an app. Choose the Airthings Wave Plus if you want the fuller picture (CO2, Temperature, Humidity, Radon, VOC, Atmospheric Pressure).
Is the Aranet Aranet4 Home or Airthings Wave Plus cheaper?+
The Aranet Aranet4 Home is the more affordable option at $200, versus $230 for the Airthings Wave Plus.
Do both use real CO2 sensors?+
The Aranet Aranet4 Home uses a NDIR sensor; the Airthings Wave Plus uses a NDIR sensor. NDIR and photoacoustic sensors measure CO2 directly, unlike eCO2 estimators.
Which measures more air quality parameters?+
The Airthings Wave Plus tracks more, with 6 parameters (CO2, Temperature, Humidity, Radon, VOC, Atmospheric Pressure), compared with 4 for the Aranet Aranet4 Home.
Neither One Quite Right? Consider These
Other monitors in the same class, ranked on sensor accuracy first.
AirGradient ONE
$150NDIR sensor · ±50 ppm · Built-in display
Research-grade ±50 ppm accuracy and tracks 6 metrics in one unit.
Airthings View Plus
$300NDIR sensor · ±50 ppm · Built-in display
Research-grade ±50 ppm accuracy and tracks 7 metrics in one unit.
Aranet Aranet4 Pro
$250NDIR sensor · ±30 ppm · Built-in display
The tightest accuracy in this list and runs 2+ years on a charge.
Browse the full monitor directory →
Prices are typical street prices and change often. We earn a commission on purchases made through these links, at no extra cost to you.
More Comparisons
Our content includes affiliate links, meaning we may earn a commission if you purchase through these links, at no additional cost to you. As an Amazon Associate we earn from qualifying purchases. This does not influence our comparisons.