eBuying Guides: Vacuum Cleaner - What to look for when buying a vacuum cleaner. HowStuffWorks: How Vacuum Cleaners Work - Graphic tutorial looks inside a vacuum cleaner and shows how it works. Hoover Assistance - Provides customer information and owner manuals for European and US models of the company's vacuum cleaners. Vacuum School - Features vacuum cleaner ratings, reviews, and information. Vacuum Reviews World - Provides brief reviews, buying advice and tips for vacuum cleaners. ConsumerSearch.com: Canister Vacuums - Identifies which products reviewers like and dislike, where they agree or disagree, and why. ConsumerSearch.com: Upright Vacuums - Identifies which products reviewers like and dislike, where they agree or disagree, and why. ConsumerSearch.com: WetDry Vacuums - Identifies which products reviewers like and dislike, where they agree or disagree, and why.