Have not put this Hoover to heavy duty cleaning, until recently, really needed to clean carpets for my family room, I have dogs. During December 2012 I had difficulty w/the unit not picking up excess water. Viewing Hoover's video, I may not have aligned that tank correctly, so, I will do carpets again in the Spring of 2013, then affirm if it is was misalignment of the tank or if something is wrong with the unit. Originally, it worked great! Wish me luck!