This radon remediation company is truly head and shoulders above the rest. They are state of the art in their understanding of radon remediation, highly knowledgeable, well trained, and every single employee is hardworking and upbeat. My basement is 1800 square ft with two crawl spaces, and the house was built straight on clay with no tile or gravel. Radon number was over 100. I made the mistake and first went with a different company my realtor recommended, and he couldn't get it below 25. I actually had to call in Ohio Radon Remediation to clean up the disastrous job we were left with (noncompliant with Dept of Health requirements!). Ohio Radon Remediation sent a technician out and he diagnosed all the problems and went ahead and fixed them right then and there. Followup results? Perfect remediation. All it took was knowing how to deal with remediation the proper way! Please don't go with anyone else, choose Ohio Radon Remediation. They carefully diagnose and remediate. The other company had done over 1500 remediations, including on clay, and didn't even have the DOH approved measuring machine(see photo). He hadn't put dampeners in the crawl space pipes and that the pipes were going into thin air and creating zero suction at the end of our 1800 square foot basement. The original failed job was remediated successfully with no new equipment but with corrected installation and five hours of work done cheerfully and accurately. Ohio Radon Remediation is amazing!! The photos show the DOH radon measuring machine, the diagnostic machine, the pressure achieved, and the stupid place the pipe was originally put, not in the soil at all. Thank goodness for Ohio Radon Remediation! They saved my bacon!! And for a fraction of the price. Go with them and you'll know it's done right.