While we didn’t deal with them directly, they did our Radon testing and mitigation system installment in the house we bought. Our realtor did all the communication with them. The Radon test got scheduled fast. The report was emailed to us. It’s a 3-day test, and it should be done in any basement. They installed the radon mitigation system in our basement. It appears to have been done well, although they could have done a slightly better job with patching the holes in the concrete as well as bracing the pipes. However, it’s an unfinished basement, so I think aesthetics weren’t at the top of their list on this installment. They also didn’t clean up completely, there was a lot of concrete dust on the pipes. Again, unfinished basement, so I can understand. They did seem to clean up the floor well, so I really can’t complain. I cannot comment on their customer service. Based on results, I’d recommend them. 3.5 stars, I rounded up to 4 since they were fast in getting things done.