Bests & Worsts Reviews from Amazon

When I was searching to purchase a home, I generally avoided homes with a Radon mitigation system already installed. I was not well read, informed, or concerned about Radon. I thought that a home with a Radon problem would be devalued in some way. I purchased my home in 2012. The home inspector placed a charcoal radon test kit in the basement. Results returned at 3.8 pCi/L, just under the EPA recommendation of 4.0 pCi/L. I thought great! Remediation is not necessary according to the real estate closing papers. Fast forward a few years, I did some minor basement renovations to remove batt insulation between the exterior rim joists and install a DIY spray foam seal, and replaced my window well windows with dual pane vinyl inserts. I became a little more concerned about Radon now that i "sealed" the basement from drafts. I did a little more reasearch and found that the charcoal kits are statistically very inaccurate. I bought the Corentium unit, because of the great reviews and easy continuous monitoring. The Corentium unit reported long term exposure levels of 8.3 pCi/L. I was surprised the Corentium reported high levels even in the upper floors of my house. That's all the information I needed to contact a Radon mitigation specialist to install a sub-slab depressurization fan to vent the radon outdoors. The mitigation system cost me $1300. The long term levels dropped significantly to below 0.7 pCi/L. The Corentium calibrates itself...just read the instructions, set it down, and check as often as you like. The Corentium is a small investment to buy piece of mind. I highly recommend it. I have loaned the unit to friends, family, and neighbors to help them make informed decisions.