Durrett Radon Mitigation only uses EPA approved testing devices that must be calibrated and we perform extensive quality analysis and quality control practices to ensure our testing devices are accurate and dependable. We use a CRM or a Continuous Radon Monitor and a NRPP certified technician will be on site to set and retrieve your testing device. Our technician will locate a room in the lowest livable area of your home since Radon gas rises from the soil, and deploy it for 48 hours. Once the test is complete, the technician will return and be able to give you an hour by hour report about the radon levels in your home. This will determine whether your home will need a mitigation system or if the air you are breathing is safe. Radon levels are recorded in picocuries per liter or piC/L. The EPA has set a 4.0 piC/L as the action level for needing a radon mitigation system in the US. If your overall average is above 4.0 piC/L it is recommended that you install a mitigation system. If your level is below that, it is recommended that you test your home again in 2-5 years as radon levels will fluctuate and change over time.