Detectors should be placed at least how far from exterior doors and windows?

Detectors should be placed at least 3 feet from exterior doors and windows to ensure accurate radon measurements. This distance helps to minimize the potential for interference from external factors, such as drafts or fluctuations in air pressure, which can occur when doors and windows are opened or closed. By adhering to this guideline, the integrity of the radon measurements is better maintained, allowing for more reliable results that reflect the radon levels within the indoor environment rather than any exterior influences. This is important for effective radon mitigation strategies and for providing homeowners with accurate information regarding radon exposure in their homes.