dutable.com Not all vacuum cleaners effectively remove pollutants and allergens from your home. In fact, a lot of the dirt, dust, and pet dander that your conventional vacuum pick up often get blown back into atmosphere. This is one in the problems with regular canister type vacuums. A central vacuum system, however, keeps them within a separate receptacle and prevents them from polluting your own house again. Although the upright types are the actual greater convenient to use, the caniste...