What is the general procedure for testing a home for radon?
Two standard methods exist for testing a home for the presence of radon gas. Short-term testing methods are designed to provide a quick radon value. Short-term tests can be as short as 48 hours and as long as 90 days. Long-term testing methods are designed to provide an annual average of radon gas. Long-term tests run for a minimum of 90 days, and usually for 6 to 12 months. The EPA recommends performing a short-term test for radon. If that test comes back below the EPA Action Level ( 4.0 pCi/L), then no further immediate action is warranted. However, the home should be tested again after any air sealing work, heating/air conditioning system changes or foundation modifications. If the short-term test returns with a radon value of 4.0-10.0 pCi/L, the EPA recommends performing a long-term test to gauge the home’s annual radon concentration. The results of the long-term test should be used to determine the necessity of radon mitigation (reduction). Another option is to conduct a second sh
