Radon Detectors

Radon detectors help you measure and manage radon gas, a colorless, odorless threat and a leading cause of lung cancer. By tracking levels where you live or work, these tools turn an invisible risk into clear data, guiding decisions about mitigation and ventilation. They are valuable for homeowners, renters, real estate pros, contractors, and home inspectors seeking reliable, documented results.

Choose from two main approaches. Digital continuous radon monitors provide real-time readings, daily and long-term averages, trend graphs, and alerts for fast action. Passive test kits, like charcoal and alpha-track, are affordable and lab-analyzed, ideal for short-term screening or long-term confirmation. Professional-grade monitors add higher sensitivity, tamper detection, and detailed reporting for property transactions.

Look for features that improve accuracy and ease of use: calibrated sensors, low minimum detectable concentration, data logging with export, mobile app connectivity, audible alarms, bright displays, robust battery life or USB power, and recognized listings from NRPP or NRSB. Many models highlight the 4.0 pCi/L action level recommended by the EPA so you know exactly when to act.

Placement and use tips:
- Test the lowest livable level, three feet from floors and away from drafts, windows, and exterior walls.
- For short-term tests, keep doors and windows closed for 12 hours before and during 48–96 hour measurements.
- Long-term testing (90+ days) captures seasonal swings for a truer average.
- Re-test after mitigation, renovations, or every two years to verify performance.

Radon detectors make ongoing monitoring straightforward, with reminders, historical charts, and cloud syncing that simplify compliance and record-keeping. Whether you need a quick check before a sale or continuous protection for your family, a dependable radon monitor or test kit offers clear, actionable insight into indoor air safety. Compare accuracy, calibration schedules, connectivity, and warranty to find the best radon detector for you.