What is the safest radon level?

4 pCi/L





What is a safe level of radon? Any radon level poses some health risk and it is not possible to reduce radon to zero. The best approach is to lower the radon level as much as possible. The Environmental Protection Agency (EPA) has set the action level at 4 pCi/L (picocuries of radon per liter of air).

What should a radon manometer read?

The readout on the manometer should be between 0.5in – 1.75in. In most cases these are acceptable levels indicating, your system is operating correct. When your Radon system is shut off the fluid should rest at zero if it does not then your manometer is low on fluid.

What is the highest radon reading?

Then in December of 1984 a record high level of 2600 pCi/l of radon was measured in the basement of a Boyertown, PA home (Watrus house). This was the highest indoor radon level at the time ever recorded in the world.

What time of year is radon highest?

winter





The reason that radon levels in the home can be higher in the summer and winter is two-fold. During the winter, the air in your home tends to be much warmer than the outside air, and this temperature difference creates a vacuum within your home.

What does pCi L stand for?

picocuries per liter of air

When radiation from radon is measured directly, the amount is usually expressed in picocuries per liter of air (pCi/L).

How do you read a radon meter in a basement?

Quote from the video:
Quote from Youtube video: It's about a point three water column reading by gambling the discharge. So in diagnosing a system maybe it's zero degrees outside.

How do you read a manometer?



Quote from the video:
Quote from Youtube video: Open-ended manometers a closed-end manometer is not open to the air. To read a closed-end manometer take the difference between the heights of the two columns of mercury.

How many suctions are needed for radon mitigation?

Buildings with multiple foundation types, such as basements, crawlspaces, and slab-on-grades require radon mitigation methods that incorporate multiple suction points with pipes connecting them to the fan. Usually, one fan is sufficient for a home.

Does opening windows reduce radon?

Opening windows improves air circulation and ventilation, helping move radon out of the house and mixing radon-free outside air with indoor air. Make sure all your basement windows are open. Homes tend to have lower air pressure than their surroundings, which draws radon into the basement.

How quickly can radon affect you?



Radon gas can damage cells in your lungs, which can lead to cancer. Radon is responsible for about 21,000 lung cancer deaths each year in the United States, though it usually takes 5 to 25 years to develop. Early signs and symptoms of lung cancer may include: persistent cough.

What can affect radon test results?

Conclusion. Many factors can give either a false negative or a false positive when conducting a radon test. High winds, barometric pressures, temperature, rain, and your home’s construction all play a role in radon readings.

Does a dehumidifier affect radon testing?

Test devices should not be within three feet of exterior doors. Close any air vents that would force air across the testing device. Turn off all air moving devices during the test. This would include ceiling fans, dehumidifiers, regular fans, HEPA or any other kind of filtering device that moves air.

What can cause a false positive radon test?

Can Radon Tests Be Wrong?

  • Barometric pressure.
  • Temperature/Season.
  • House construction.
  • Rain soaked ground.
  • HVAC system.
  • Improper placement of the device.



Can radon tests be manipulated?

Yes, radon tests can be manipulated. However, please note that attempting to manipulate radon test results is not only considered fraud, but it can also result dangerous living conditions for others.

Can radon fans be in basement?

A radon fan cannot be installed in a basement. As per building codes, a radon fan should be installed only in attics, garages, or outside the house.

How do you mess up a radon test?

Rain, thunderstorms and high wind can also have an affect on radon testing results. Radon readings have been known to go down when the outdoor wind speeds increase during periods of high humidity. When the seasons change such as fall to winter, radon testing can be affected.