When we called for a quote, Tony came out promptly and went through things with us. We had one other quote done but we decided to go with Radon Solutions because they were the lowest cost and also gave a lifetime warranty on workmanship and the system (minus damage caused by weather, etc). The installation was faster than I expected and they cleaned up the mess. Our radon had tested 8.7 before the installation and tested 1.1 after the installation.