HEPA Vacuum cleaners come in two basic styles, upright and canister. The upright HEPA vacuum stands by itself and is a single unit, some with or without an attachment hose to clean hard to reach areas with specialized vacuum tools. All upright vacuum cleaners tend to leak more dusty air back into the environment. Also since the rug beater bar is permanently attached to the case of the vacuum cleaner, the vacuum cleaner is almost worthless if the beater bar fails.

HEPA canister (Better Overall Choice) vacuum cleaners have a smaller mostly more powerful, compact designed case that will roll along and follow behind you as you vacuum the floor, carpet, furniture or upholstery. A long hose is attached to canister vacuum cleaners so you can reach those hard to get areas with the many vacuum tools that are available for them for easy cleaning of most any surface. The rug beaters, also known as power nozzles, are detachable from the canister type vacuum cleaner units. They are often much more powerful then the ones found on uprights. This is because they are powered by their own separate electric motor. If a power nozzle breaks down on a canister vacuum cleaner, the vacuum cleaner can still be used to clean many different kinds of surfaces while the power nozzle is being repaired or replaced.

Important Design Information: There are different designs of HEPA canister vacuum cleaners available to you. The most common is a case made of plastic with a disposable paper dust collector bag to catch the dust from your home and into the vacuum cleaner. Be aware that many of these so-called HEPA vacuum cleaners can and do leak dusty air through air gaps in their UN-PRESSURIZED plastic cases and around the openings that surround the HEPA filter itself. The dirty air can then pass through the exhaust side of the vacuum cleaner and back into your indoor environment to breathe and react to! Another important fact to know is, both HEPA and non-HEPA vacuum cleaners pass the airflow from the vacuum cleaner tools being used and then into the unit. The dirty air is then passed into the dust containment bags located inside of the vacuum cleaner's tank and then onward to the motor where the air is then forced out of the vacuum cleaner through the exhaust side of the vacuum cleaner.

The common problem is, when the dust bags containing the dirt become about one third full, the fine dust particles plug the pores of the paper dust collector bags. This restricts a tremendous amount of airflow to the motor, which will cause the vacuum cleaner to lose suction while putting a strain on the motor, reducing its life. This restriction of airflow to the motor can cut the cleaning ability of the vacuum cleaner up to 80%! That's why most people end up replacing their costly, less than half full paper dust collector bags far too often. And their vacuum cleaners as well!

A simple way to prove that your present vacuum cleaner is leaking dust and allergens back into your indoor environment for you to breathe over and over again is to simply place your vacuum cleaner into that beam of sunlight that shines through your window every day. Turn on your vacuum cleaner and look into the beam of sunlight. You will most likely see tens of thousands of dust particles combined with other allergens pouring from your unsealed vacuum cleaner and into that beam of sunlight. You will then know that your vacuum cleaner is not sealed and that's™s why your furniture is already dusty just after all of that vacuuming!

Information from aircleaners.com. http://www.aircleaners.com/hepa.phtml

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