If your test results show radon levels at or above 4.0 pCi/L — or 2.7 pCi/L per the WHO recommendation — you should take action as soon as possible. Contacting a certified radon mitigation professional is the first and most important step. A-1 Radon provides fast quotes and onsite consultations to assess your home and recommend the right mitigation solution. Elevated radon is a solvable problem, and acting quickly reduces your family's risk.

Yes, weather and atmospheric pressure can influence radon levels during a test. High winds, low pressure systems, heavy rain, and freezing temperatures can all cause temporary fluctuations in radon concentrations. This is one reason why professional testing under controlled conditions — and long-term testing — tends to be more reliable. A-1 Radon's certified professionals follow strict testing protocols to minimize the impact of weather variables on your results.

Radon testing is strongly recommended - and often required - during real estate transactions. Buyers should insist on a radon test as part of their home inspection to avoid inheriting an unknown health risk. Sellers can benefit from testing proactively to speed up the transaction and demonstrate transparency. If elevated levels are found, a mitigation system can actually increase buyer confidence and home value.

Radon mitigation refers to any process used to reduce elevated radon levels in a home or building. The most common and effective method is Sub-Slab Depressurization (SSD), which uses a pipe and fan system to draw radon from beneath the foundation and exhaust it safely outside. Mitigation systems are proven to reduce radon levels by up to 99% in most homes. A-1 Radon has installed over 18,000 systems across Wisconsin, delivering reliable results for thousands of families.