Bests & Worsts Reviews from Amazon

I PURCHASED THIS FAN BACK IN LATE MAY OF 2016, INSTALLED THE FAN IN EARLY JUNE OF 2016. THE INSTALLATION REQUIRED TWO RUBBER COUPLERS AND HOOKING UP AN APPLIANCE PLUG TO THE DEVICE AND INSTALLING IT TO THE 3" PVC LINE IN THE ATTIC. WITHIN ONE MONTH THE FAN WAS MAKING A BEARING/DRONE TYPE NOISE AND FINALLY WITHIN 5 MONTHS THE NOISE WAS VERY LOUD AND THE RADON LEVELS INCREASED TO WELL ABOVE WHAT THEY SHOULD HAVE BEEN. IF YOU ARE NOT A LICENSED INSTALLER RADON AWAY DOES NOT HONOR THEIR WARRANTY! EVEN THOUGH INSTALLING THE FAN CAN BE DONE WITH EASE AND THERE IS NOTHING THAT CAN REALLY GO WRONG, RADON AWAY WON'T HONOR THE WARRANTY. SO BEWARE!!!! MOST LIKELY ANYONE WHO PURCHASES A RADON AWAY ITEM FROM AMAZON WILL NOT HAVE WARRANTY PROTECTION. GO WITH ANOTHER COMPANY!!!!! DO NOT RISK YOUR MONEY!