Not all vacuum cleaners effectively remove pollutants and allergens from your home. In fact, the majority of the dirt, dust, and pet dander that the conventional machine pick up often get blown right back into atmosphere. This is one with the problems with regular canister type hoovers. A central vacuum system, however, keeps them within a separate receptacle and prevents them from polluting your home again. The Dyson DC33 definitely would not require anyone to sweat over its manual just to p...