Measuring radon: air-Q radon or dosimeter?

Radon is invisible, odorless and dangerous - but how can it be measured reliably? The focus is on two methods: radon dosimeters, which provide average values over months and are often used for official verification, and the air-Q radonwhich measures the concentration in real time and reacts immediately to changes. This article shows how the two approaches differ - and when which method is worthwhile.

What is a radon dosimeter?

A radon dosimeter is a passive measuring device, often in the form of a small plastic box fitted with a special foil or trace detectors. These register the alpha radiation that is produced when radon decays.

• Measurement duration: typically 3 months to 1 year (long-term measurement).
  
  
• Evaluation: after the exposure time has elapsed, the dosimeter is sent to the laboratory where the radiation traces are evaluated.
  
  
• Area of application: Authorities and institutions often recommend dosimeters for official long-term assessment because radon levels can fluctuate greatly depending on the season.
  
  

Advantages:
✔ Very reliable for long-term measurements
✔ Recognized for official verifications
✔ Easy to use

Disadvantages:
✘ No real-time results
✘ Results only available after laboratory analysis
✘ Can only be used once

air-Q Radon: Modern technology for real-time control

The air-Q Radon uses its own sensor module that measures alpha radiation directly in real time. Radon values are recorded every 1.8 seconds and immediately evaluated digitally.

• Measuring duration: continuous and as long as required.
  
  
• Evaluation: directly visible in the air-Q app or web app, supplemented by alarm messages when limit values are exceeded.
  
  
• Area of application: ideal for private users, companies or institutions that want to understand fluctuations, check ventilation strategies or integrate smart home solutions.
  
  

Advantages:
✔ Real-time measurement, trends immediately visible
✔ Smart home integration and export functions
✔ Unlimited reusability
✔ Additional air parameters (CO₂, VOC, humidity, etc.)

Disadvantages:
✘ Higher acquisition costs than dosimeters
✘ A dosimeter is usually prescribed for official, officially required long-term verification

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Comparison at a glance

Conclusion

• A radon dosimeter is the right choice when it comes to officially recognized long-term measurements. It provides reliable average values over several months - but only after laboratory analysis.
  
  
• The air-Q Radon is suitable for anyone who wants active control, immediate results and transparency. It makes fluctuations visible, shows the effectiveness of ventilation measures and can be integrated into the smart home.
  
  

It often makes the most sense to combine both methods: a dosimeter for official detection - and the air-Q Radon for everyday use in order to be able to react immediately to changes.