I started using this item about one month ago. I does a very good job on the heavy setting but not as good on the others. My main complaint is with the control panel as it can't be read without getting down on your knees and getting a flashlight to read the small print on the controls. The print is almost the same color as the background. Unit was easy to install as I did it myself. Good instructions. [This review was collected as part of a promotion.]