How We Test

When you hire Madison Radon Testing, you get quick and reliable results. We do not sell radon mitigation systems, so you receive an independent and unbiased assessment. We conduct radon tests for homeowners, real estate sales, home inspectors, realtors, businesses, schools, assisted living facilities, office buildings, and even the Wisconsin State Capitol.

Lindsay will schedule a set-up & pick-up appointment with you over the phone. When we are on our way to your home, we will text you our exact arrival time. At your home, we will set up a continuous radon monitor in the lowest livable level of your home (typically the basement). The small machine continuously measures the amount of radon in the air, and it records an average each hour. If you want to test a property you’re buying, our monitors have anti-tampering features, so you can rest assured your results are accurate.

A radon test lasts between 2 to 4 days, depending on what works best for your schedule. The same day we pick up the radon monitor, we will email your official radon measurement report containing all of the data from your test and your average radon level. Click here to see an example of our report (coming soon).

Closed-House Conditions

Per EPA guidelines, closed-house conditions are required at least 12 hours before your radon test begins and while the radon monitor is running. Exterior doors and windows must stay closed (with the exception of normal entry and exit).

During the Test

• Do not move, cover, or tamper with the radon monitor.

• Maintain closed-house conditions (see above).

• The fan on the thermostat should be set to AUTO.

• Do not use wood-burning fireplaces or stoves.

• Do not operate attic fans or whole-house fans.

• The radon mitigation system should be operating (if applicable).