5 Best Radon Detectors for Home

Radon, a harmful radioactive gas, is a silent invader that can seep into your home without notice. This lethal gas is the second leading cause of lung cancer, making its detection in homes crucial. This comprehensive guide will walk you through the best radon detectors available on the market, their unique features, and how they stack against each other.

Understanding Radon

Radon is a byproduct of the underground decay of uranium. Being a radioactive gas, it can infiltrate your living spaces through cracks in the foundation and walls, especially in areas with low ventilation such as basements and crawlspaces.

The Importance of a Radon Detector

Due to its dangerous health implications, it’s paramount to have a radon detector in your home. These devices can provide both long-term and short-term readings of radon concentration, enabling you to take timely action if levels rise above the safe threshold.

Types of Radon Detectors

Radon detectors come in two primary types: passive and active. Passive radon detectors, like charcoal canisters and alpha-track detectors, don’t require power and use chemical or electromagnetic methods to detect radon. Active detectors, on the other hand, require power and offer continuous monitoring.

Radon Detector

Top Five Radon Detectors: A Comparative Analysis

Here, we’ve handpicked the top five radon detectors based on their performance, features, and user reviews.

1. Radon Eye RD200

This detector takes the crown for its rapid and accurate readings. It provides an initial reading within 10 minutes and a more precise reading after an hour.


  • First reading in 10 minutes
  • Continuous radon measurement
  • Easy level readings through app and LED display


  • No average level reading


2. Airthings 2960 View Plus

This smart radon detector offers a plethora of features, including connectivity with Alexa, Google Assistant, and IFTTT. Plus, it can detect other environmental parameters, making it a versatile choice.


  • Connects to Alexa, Google Assistant, and IFTTT
  • Shows readings with simple display
  • Provides current and past readings in AirThings app
  • Works with the AirThings hub


  • Pricier

3. Airthings Corentium Home Radon Detector

This detector is the best digital test on the market. It provides both long and short-term readings and works even in dusty and humid conditions.


  • Get readings quickly
  • Long- and short-term readings
  • No lab fees


  • Expensive
  • No app or third-party connections

4. Pro4 Series (4th Gen) – Leader in Home Radon Detection

This detector is well-suited for both long and short-term tests. It continuously samples the air and updates its readings every hour.


  • Continuous readings
  • Clear, easy-to-read display


  • Steep price

5. Radon Test Kit – Pack of 2

If you’re on a budget, this radon gas test kit is an affordable choice. It provides test results and a detailed action plan within five to seven days.


    • Under $60


    • Fees differ for New Jersey residents
    • Lab fees and postage required
    • Tests in 2-4 days

    Radon Detector

    ProductBest forLong-term detectionLab results requiredReadings displayWait time for first readingLearn More
    Radon Eye RD200Best overallYesNoYes10 minsView on Amazon
    AirThings 2960 View PlusBest smart radon detectorYesNoNo1 hourView on Amazon
    AirThings CorentiumBest digital testYesNoYes24 hoursView on Amazon
    SafetySiren Pro4Best for long and short-term testingYesNoYes48 hoursView on Amazon
    Radon Test KitBudget pickNoYesNo72 hoursView on Amazon

    Choosing the Right Location for Your Detector

    Placement of your radon detector is critical to get accurate readings. It’s best to place your detector in the lowest level of your home, such as the basement, where radon concentration is typically the highest.

    How to Get Accurate Results from Your Radon Test

    For accurate results, allow your radon test kit or detector to sit undisturbed in a low-ventilation area for the recommended duration. The longer you leave the test out, the better the results generally become.

    What If Your Home Has High Levels of Radon?

    If your radon detector indicates high levels of radon, it’s time to bring in a professional. A qualified radon mitigation contractor can seal cracks in your foundation and install a ventilation system to reduce radon levels in your home.

    Radon Mitigation: An Overview

    Radon mitigation services vary in cost based on the specifics of each case. However, you can expect to pay at least $500 for basic mitigation services.

    Understanding the Dangers of Radon Exposure

    Exposure to high levels of radon is a leading cause of lung cancer. According to the EPA, about 4% of nonsmokers will get lung cancer from radon exposure, even from greatly elevated levels of the gas.

    Frequently Asked Questions about Radon

    This section addresses common questions about radon and its detection, including how radon is harmful and which buildings are most likely to be affected by radon contamination.

    How We Reviewed Radon Detectors

    We’ve conducted extensive research, compared different tests and detectors, and examined features like waiting time for the first reading, alert modes, and displays to provide you with this comprehensive guide.


    Considering the health risks of radon exposure, investing in a reliable radon detector is a wise decision. While the Radon Eye RD200 is our top pick, the other detectors on this list also offer excellent performance and unique features, making them worthy considerations.

    Ensure your home is safe from radon and give yourself peace of mind with a quality radon detector. Act now and protect your loved ones from this silent invader.

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