Aranet Radon Plus

In the United States, radon is measured in pCi/L (picocuries per liter).
The EPA action level is 4.0 pCi/L. If long-term readings are at or above this level, mitigation is recommended. The EPA also suggests considering mitigation between 2.0 and 4.0 pCi/L.

There is no completely safe level of radon exposure. The goal is to reduce indoor radon concentrations as much as reasonably possible.

Settings can be adjusted using the button on the side of the sensor or through the Aranet Home mobile app.

A radon test kit is typically a short-term or long-term passive sampling device that must be mailed to a laboratory for analysis.

A digital radon detector like Aranet Radon Plus continuously measures radon levels in real time. It allows you to:

• See daily and seasonal fluctuations
• Monitor long-term exposure trends
• Validate mitigation system performance
• Receive alerts when levels rise

Continuous monitoring provides more context than a one-time test.

No registration is necessary. You can use Aranet Radon Plus sensor as a standalone device or sync it with the free Aranet Home app for a comprehensive data history and analysis.

Aranet Radon Plus sensor updates the radon levels reading every 10 minutes, with the first highly reliable result in just one hour.

Aranet Radon Plus uses an ionization chamber that detects alpha decay events from radon gas. The device calculates concentration levels and displays results in pCi/L.

• First reading: approximately 10 minutes
• Reliable 1-hour average
• Long-term 24h / 7d / 30d averages for improved accuracy

This method is commonly used in professional continuous radon monitors.

The color-coded bars (green, yellow, red) indicate the radon concentration levels and warn you of unhealthy levels. The thresholds for these bars can be adjusted via the Aranet Home app. The default thresholds are set following World Health Organization (WHO) Radon guidelines.

For residential use, radon detectors should be placed:

• On the lowest livable level of the home (basement or ground floor)
• At least 20 inches above the floor
• Away from drafts, direct sunlight, and high humidity areas
• Not in kitchens, bathrooms, or laundry rooms

Placement affects readings. Follow EPA and manufacturer guidelines for best results.

Radon levels fluctuate daily and seasonally. Short-term readings provide an initial indication, but long-term monitoring gives a more accurate picture of exposure.

Continuous monitoring over weeks or months is recommended to understand your home's true radon profile.

No. Aranet Radon Plus does not require registration, subscriptions, or recurring fees. The device works independently and syncs with the Aranet Home app for history and alerts.

The green, yellow, and red bars indicate radon concentration levels.

Default thresholds can be adjusted in the Aranet Home app. For U.S. users, many homeowners align thresholds with the EPA action level of 4.0 pCi/L.

If long-term readings exceed 4.0 pCi/L:

1. Confirm with continued monitoring or a second test.
2. Contact a licensed radon mitigation professional.
3. Install a mitigation system if recommended.

Continuous monitoring helps verify mitigation effectiveness over time.

Yes. Aranet Radon Plus can display radon concentration in pCi/L, the standard unit used in the United States.