Radon tests should be conducted away from drafts, high heat, and high humidity in a regularly used room on the lowest level in the home that is used as living space, or in radon-testing lingo: test the lowest habitable space. Short-term radon tests last for 2 to 90 days, and long-term tests run for up to a year. Because radon levels vary daily and seasonally, longer test periods are better indicators of the average level. However, if two short-term tests yield an average result greater than 4 pCi/L, the EPA recommends taking steps to lower the level to 2 pCi/L or lower. Ongoing testing in the future may be warranted if the levels are below but close to 4 pCi/L. Call Mack Property Inspections if you require a radon test in Buffalo and WNY!