How to Measure Radon w/ Radon Eye RD200 Example
- Adam Garrett
- Mar 26, 2024
- 2 min read
Updated: Jul 4
Download/Update Radon Eye App
Go to your play store or other location where you download apps and download the Radon Eye App. If you've already downloaded it, update it if it needs an update.
Plug In Device (RD200)
While your download/update is going, plug in the Radon Eye RD200. It will begin the process before it connects to the app.
Connect Phone to Device (RD200)
After turning on Bluetooth, walk through the prompts while on the app to connect your device. Be sure to be close in proximity to the device and be sure to keep your phone in close proximity to the device while the device is reading.
Leave Phone & Device (RD200) in Room for At Least an Hour
Leave your phone and the device in a room to collect data for at least an hour.
Find Out the 4 Rooms Where the Owner Will Spend the Most Time
Find out which rooms the owner and the occupants plan on spending the most time, i.e.:
The master bedroom
Their study if they work from home
Bedrooms of other long term occupants (i.e. their kids)
The living Room
The kitchen
When seeking this information, you'll want to know which places they'll be in most in order. That way you can prioritize where you'll want to get an hour each so that if you're not in a place long (i.e. for a 2 hour home inspection), you're able to get the inspections most important first. Focus on the 1st floor initially.
Best Practices for Accurate Reading
The picture below goes over a few best practices, including:
placing the unit 20" above the floor
3' or more from windows or exterior doors (& ideally, don't disturb the room while the radon detector is getting the reading)
4" or more from objects or outside walls
For more details, see the EPA's Radon Testing Dos & Don'ts PDF
There Will be Radon
The test should pick up some radon present because it's in every home to some degree.
Per What is EPA's Action Level for Radon and What Does it Mean?
"The EPA recommends homes be fixed if the radon level is 4 pCi/L (picocuries per liter) (150 becquerels per meter cubed (Bq/m3)) or more. Because there is no known safe level of exposure to radon, the EPA also recommends that Americans consider fixing their home for radon levels between 2 pCi/L and 4 pCi/L (75 - 150 Bq/m3) .
The average indoor radon concentration for America’s homes is about 1.3 pCi/L (50 Bq/m3). It is upon this national average indoor level that the EPA based its estimate of 21,000 radon-related lung cancers a year. The average concentration of radon in outdoor air is .4 pCi/L (15 Bq/m3)or 1/10th of EPA's 4 pCi/L (150 Bq/m3)action level."
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