Central vacs remove more allergens

In a clinical study, when a central vacuum system was used instead of a portable, allergy patients experienced a significant reduction in symptoms. The central vacuum was determined to be more effective at removing—and containing—the most common allergy triggers: household dust, dust mites, pollen and pet dander.

http://builtinvacuum.com/downloads/Clinical-Study-Central-Vacuum.pdf

Because portable vacuums spew dust around the room through leaky bags or dust containers—they actually create indoor air pollution. Up to five times more powerful than upright and canister vacuums, the NuTone® vacuum pulls more dirt, dust and allergens out of a room as you clean. It not only takes pollutants out of your house, it keeps them out.

The central vac pulls particles up the wand and directly through a long flexible tube. The tubing plugs tightly into a special wall inlet. Then the unwanted particles speed through hidden pipes in the wall and are trapped in a large canister in the garage or utility area.

Using a central vacuum, you will not only notice fresher air but cleaner household surfaces. You can even dust your coffee table before you vacuum.
Portable vacuums leave dust behind that you and your family stir up every time you walk on a rug, move magazine, or sit on a couch.

The powerful central vacuum motor produces a stronger suction that removes more dust and dirt particles from carpets and furniture. Carpet and upholstery attachments plug into an outlet or use moving air to rotate a turning brush. Because your home is deep-cleaned, it will stay cleaner—and healthier—longer.