Not all vacuum cleaners effectively remove pollutants and allergens in your own home. In fact, a lot of the dirt, dust, and pet dander your conventional machine pick up often get blown back into the air. This is one in the problems with regular canister type floor cleaners. A central vacuum system, however, keeps them from a separate receptacle and prevents them from polluting your own house again. Also Dyson usually offer 5 years warranty. Meaning you can expect your vacuum cleaner to last f...