I contacted SmartVentilation after testing my radon levels privately. My radon was over 6 pCi/L. Wayne Dean came to my home and discussed several options for the reduction of my radon and what would be effective for my home which is 2350 square feet. My wife and I are both into a healthy living and Wayne asked if we would like a carbon dioxide controller for our system.? We both were uneducated to carbon dioxide levels and its effect on sleep and overall health. Wayne suggested the Daisy Ductless system with and added carbon dioxide controller. The Daisy system brings in fresh air from outside and has a filter that removes about 95% of everything that would be negative to my family's health. The controller also monitors the humidity and will not allow my humidity to get over 60%. The installation process was quick and very neat with little disruption. As soon as we powered up the system, I was shocked to see my CO2 levels above 1100ppm! Within a day the levels dropped below 600ppm and based on the amount of occupants seldom goes over 700ppm and often drops to the low 500ppm range. Within a couple of days, my radon levels dropped below 3pCi/L and are now maintained at that level or lower. Not everything about my system was perfect as my wife and I were not satisfied with the noise output of my system, I expressed my disappointment to Wayne and he quickly found a solution and installed a new fan that is about a quiet as our refrigerator. I have always believed that a true test of a company or organization is when things go wrong and how they choose to rectify the situation. I am a four star rating person, I seldom rate anything 5 stars. Wayne was not going to be happy until I was happy. I highly recommend Smart Solutions and the Daisy Ductless system. I began by looking for reducing radon in my home and ended up with a system that has not only reduced radon levels but improved our overall indoor air quality tremendously. Buddy K. N Ft. Myers