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Air Quality Monitors · Head to head

Airthings 2950 Wave Radon vs Aranet4 HOME

Full Smart Air Quality Monitors comparison in 2026

Updated October 2026
Data from Amazon and official Airthings and Aranet sites.
2026 verdict
A pocket meter for stuffy rooms is not a radon instrument, and the Aranet4 HOME is the recommendation when carbon dioxide is the gas you mean.
Aranet4 HOME
Winner
Aranet4 HOME
€219.00
Buy on Amazon Germany
It is the better reviewed of the two, with an NDIR CO2 sensor, atmospheric pressure, an e-ink screen and two AA batteries rated for 4 years. The Airthings 2950 Wave Radon is the radon meter, with a 5 year warranty, Google Home and Alexa as well as Home Assistant, and about 1.5 years on two AA cells. It has no screen and no CO2 sensor. Neither one uses Wi-Fi. Choose the Aranet4 HOME for ventilation. Choose the Airthings 2950 Wave Radon for soil gas.
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FeatureAirthings 2950 Wave RadonAranet4 HOMEWinner
Price$104.00€219.00Airthings 2950 Wave Radon
Rating4.44.7Aranet4 HOME
Warranty5 years2 yearsAirthings 2950 Wave Radon
Battery Life1.5 years4 yearsAranet4 HOME
ConnectivityBluetooth, OtherBluetoothAirthings 2950 Wave Radon
ScreenNOYESAranet4 HOME
IntegrationsGoogle Home, Alexa, Home AssistantHome AssistantAirthings 2950 Wave Radon
SensorsRadon, Temperature, HumidityCO2, Temperature, Humidity, Atmospheric PressureAranet4 HOME
Weather ResistanceNONOTie
AlertsTemperature Alerts, Humidity Alerts, Air Quality Alerts, Low Battery AlertsTemperature Alerts, Humidity Alerts, Air Quality Alerts, Low Battery AlertsTie

What the differences mean

Which gas

The Airthings 2950 Wave Radon measures radon, temperature and humidity. The Aranet4 HOME measures CO2, temperature, humidity and atmospheric pressure. An Airthings versus Aranet question on this page is radon against ventilation, not two readings of the same hazard. Buying the higher-scoring meter still leaves the other gas unmeasured.

Screen and battery

The Aranet4 HOME has an e-ink screen and is rated for 4 years on two AA batteries. The Airthings 2950 Wave Radon has no screen, uses a wave-to-check ring, and is rated for about 1.5 years on two AA batteries. Both are cordless. The Aranet is the one you can read without a phone, and the reading will be carbon dioxide.

Assistants

The Airthings 2950 Wave Radon works with Google Home, Alexa and Home Assistant, over Bluetooth and SmartLink to an Airthings hub. The Aranet4 HOME lists Home Assistant only, over Bluetooth, with no Wi-Fi and no voice assistant. If a speaker has to announce the number, the radon meter is the one that can, and it will announce radon, not CO2.

Warranty

The Airthings 2950 Wave Radon carries a 5 year warranty. The Aranet4 HOME carries a 2 year warranty. That is a real gap on a device you leave alone for years, and it does not add a CO2 sensor to the Airthings or a radon sensor to the Aranet.

Which one to buy if

What owners say

Owners of both meters use a long-running number instead of a one-off kit, and both accept Bluetooth as the way the phone gets that number. Airthings 2950 Wave Radon owners describe radon that tracks weather and a mitigation fan, a wave-to-check ring, and readings that matched a lab test after 48 hours. They complain about syncing only when the app is open nearby, slow chat-only support, and a minority of false spikes. Aranet4 HOME owners describe CO2 they trust against other meters, an e-ink screen readable in any light, and AA cells that last through travel. They mention a few minutes to settle after a move and humidity that can sit slightly off.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Airthings 2950 Wave Radon
  • Aranet4 HOME

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Frequently Asked Questions

Which is better overall: Airthings 2950 Wave Radon or Aranet4 HOME?

The Aranet4 HOME wins the sheet, on the review record, battery life, screen and a wider sensor count built around CO2 and pressure. The Airthings 2950 Wave Radon is the one that measures radon, with a 5 year warranty and Google Home and Alexa.

Airthings or Aranet: which measures radon and which measures CO2?

The Airthings 2950 Wave Radon measures radon, temperature and humidity. The Aranet4 HOME measures carbon dioxide, temperature, humidity and atmospheric pressure. Neither measures the other's headline gas, and neither has Wi-Fi.

What is the biggest difference between the Airthings 2950 Wave Radon and the Aranet4 HOME?

The pollutant, then the screen. The Airthings 2950 Wave Radon is a screenless radon meter on about 1.5 years of AA batteries. The Aranet4 HOME is an e-ink CO2 meter rated for 4 years on the same two AA cells, with pressure and Home Assistant only.

Does the Aranet4 HOME work with Alexa?

No. The Aranet4 HOME is Bluetooth only and lists Home Assistant. The Airthings 2950 Wave Radon works with Alexa, Google Home and Home Assistant, and it still measures radon rather than the CO2 the Aranet is for.

Who should buy the Airthings 2950 Wave Radon?

Someone who wants continuous radon on batteries, a wave-to-check light, and Google Home or Alexa, with a 5 year warranty. It will not tell you the CO2 in a closed office.

Who should buy the Aranet4 HOME?

Someone tracking ventilation with NDIR CO2, e-ink, pressure and about 4 years on two AA batteries. It is the wrong meter if the Airthings 2950 Wave Radon was on the list for soil gas.

Full comparison table

Compare all 32 Air Quality Monitors side by side

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