Which location should be avoided when testing for radon levels in a home?

Testing for radon levels in a home should be done in areas where people spend significant amounts of time, ideally at or near the main living areas. The garage is typically considered less suitable for radon testing because it is often not a primary living space and may have ventilation or entry points that can influence measurements, such as windows and doors that open to the outside.

When radon testing, it is crucial to ensure that measurements reflect potential exposure in areas where residents are likely to spend most of their time. Testing in the living room or other primary living areas provides a more accurate assessment of radon levels that might be encountered on a daily basis. The stairs and attic generally do not represent areas where occupants will consistently be present. Thus, maintaining a focus on representative living spaces helps in determining the effective radon exposure risk in a home.