I went with Absolute Radon and am so impressed with not only their professionalism, but their knowledge on the subject. They were on time which is big for me, if you have ever done construction on a home you will find that most of the time you are on a contractors schedule, not the other way around. They came in and assessed our situation and found the best place to run the equipment. This company is easy to work with and also guarantees their work. I would highly recommend Absolute Radon.