Another unfortunate problem with the Roomba is its inability to deep-clean carpets the way a conventional vacuum cleaner can. When Consumer Reports tested the Roomba several years ago, they found that its carpet cleaning performance was far below even the lower-rated uprights and powernozzles. It was found to do an.acceptable job of cleaning bare floors, but took far longer to do it than the conventional cleaners it was compared to (nearly half an hour for the Roomba, only about three minutes for the upright and canister cleaners.) Another problem presented itself when the Roomba was used on a fringed area rug on a wood floor. When the Roomba rolled off the rug and then tried to.roll.back on, the fringe would.catch in either its revolving.brush or its wheels, and had to be freed.manually by the owner.
Please understand that I am not bashing the Roomba by any means. I applaud the thought behind the cleaner, but it does need quite a bit of.tweaking before it can truly compete with our current vacuum cleaners. It helps to realize that a number of Pre-Hoover electric vacuum cleaners weren't very successful, due to their very large, heavy motors and fans, which accounted for much of their excessive weight and bulk. Furthermore, those cleaners left much to be desired as far as efficiency was concerned. But, as the technology advanced and the components were simplified, vacuum cleaners became much lighter and easier to handle, and their efficiency improved markedly. As a result, they rapidly replaced brooms and carpet sweepers as the accepted standard of carpet and floorcleaning. Perhaps one day, with that same technological advancement, we will see a truly effective, efficient robotic vacuum cleaner that would do the Jetsons proud.