Absolute Radon came to my house within a few days of calling for an estimate. They made a determination that my current fan was not working and was, in fact, installed incorrectly. Within one hour my new fan was installed correctly and the price I felt was reasonable based on other calls for estimates I made. I would definitely recommend Absolute Radon. I also got a reminder call prior to the appointment and a call telling me the time the installer would arrive. And he was right on time.