Bench & Gauge

Airthings Wave Plus vs CO2/VOC/AQI Monitor: Which Indoor Air Sensor Should You Buy?

Airthings Wave Plus 2930 and the compact CO2/VOC/AQI monitor take very different approaches to indoor air quality. This head-to-head compares their strengths and limitations to help you choose.

Last updated Aug 15, 2026

When you start looking at environmental indoor air measurement, the real question isn't whether to buy a monitor-it's which kind of data will actually change how you use your space. Do you want a connected device that lets you check readings from your phone, or a compact unit that puts the numbers directly on your desk? The Airthings Wave Plus 2930 and the Air Quality Monitor Indoor answer that question very differently.

Quick verdict

The Airthings Wave Plus 2930 is the connected option at USD 89.00, while the Air Quality Monitor Indoor is the display-focused option at USD 117.32. If your priority is a smart-home-friendly monitor, start with the Airthings. If you want a compact unit, lean toward the Air Quality Monitor Indoor.

Comparison at a glance

ProductPriceConditionCore strengths
Airthings Wave Plus 2930USD 89.00 Open box, no batteryRadon detection, remote monitoring, Bluetooth/Wi-Fi
Air Quality Monitor Indoor (CO2/VOC/AQI)USD 117.32 NewCO2, TVOC, PM2.5/PM10, temperature/humidity, digital display, visual alarm, USB-C cable

Where each product wins

  • Airthings Wave Plus 2930 wins for the hands-off route.
  • Air Quality Monitor Indoor wins for the see-it-now route.

Product notes

Airthings Wave Plus 2930 Air Quality Monitor

The Airthings Wave Plus 2930 is the more connected of the two. It adds radon detection to the measurement mix and pairs with Amazon Alexa, Google Home, and IFTTT, using Bluetooth and Wi-Fi for remote monitoring. The round white unit measures 4.75 inches across and weighs 0.84 pounds, so it feels like a room-level sentinel rather than a desk accessory. The limitations are practical: it comes in open-box condition and runs on two batteries that are not included. If you are comfortable with a pre-opened unit and a fresh pair of batteries, this is the smart-home-friendly route to environmental indoor air measurement.

Air Quality Monitor Indoor - CO2 Detector, VOC Meter and AQI Tester

This monitor puts the data directly in front of you. It continuously tracks CO2, TVOC, PM2.5 and PM10 along with temperature and humidity, and shows the results on a digital display. The visual alarm gives you a clear cue when readings shift, and the USB Type-C charging cable is included in the box. It is a new unit, which is a meaningful difference from the Airthings, and at 8.16 ounces it is light enough to move from room to room. At about 3.74 inches square, the display is best read up close. If your priority is a compact on-device readout with an alarm, this monitor makes that easy.

Final choice by use case

  • For a home where you want to stay aware of conditions between rooms: choose the Airthings Wave Plus 2930.
  • For a workspace where you want changes in the air to catch your eye: choose the Air Quality Monitor Indoor.
Products in this article
Airthings Wave Plus 2930 Air Quality MonitorUSD 89.00View on eBayAir Quality Monitor IndoorUSD 117.32View on eBay
Airthings Wave Plus 2930 Air Quality MonitorUSD 89.00View on eBayAir Quality Monitor IndoorUSD 117.32View on eBay

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