Installed a radon mitigation system in my house in 2007. When the house was tested in 2010 the radon level was nearly as high as without their system. Made two phone calls and sent one e-mail with no response from this company. Finally called another company who checked their system out and replaced with two systems at the same price and provided us with test results to show that they worked. Radon Detection and Control does not stand behind their work.