Wisconsin Home Inspector - 4-Square Home Inspections, LLC

Windows and doors for the property that will be tested must remain closed for at least 12 hours before installing the radon testing equipment. Windows and doors must remain closed during the entire test except for normal entry and exit. Heating and Air conditioning systems should be set for a normal operating condition. Whole house fans or attic fans if installed should be disabled during the Radon test. Excessive use of exhaust fans or clothes dryers can also impact the results of the radon test.

The placement of the testing device should be:

1. In the lowest livable level of the home
2. 3 feet from any exterior doors and/or windows
3. 1 foot from exterior walls
4. 20 inches above the floor
5. 4 inches away from any other objects
6. Away from humid areas like kitchens and bathrooms
7. Away from natural stone surfaces like granite counter tops and fireplaces
8. Away from cellular phones1 monitor can handle up to 2000 square feet.
9. A short term Radon test requires a minimum of 48 hours

We have found radon tests installed improperly. This will effect the testing results. Make sure you choose a company that knows what they are doing.