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Airflow is measured in cubic feet per minute.
Airwatts is a measurement of the power offered by a motor.
Get the FAQs about Filtration Systems
All filtration systems offer equivalent cleaning power; the difference comes in convenience.
In a bag system, the bag acts as a collector or strainer. Bags must be replaced about 2 times per year.
In a bagless system, filters do the work. Most common filters: weighted cloth filter and corrugated cardboard filter. An advantage to the weighted cloth filter is that it never needs replacing; a cardboard filter must be replaced once per year. NOTE: Foam filters, which represent old technology, must be cleaned once per year; recommended cleaning each time canister emptied. Foam filters are cleaned by washing in soapy water and air drying for 3-4 days.
Combination system: cloth bag, paper bag and filter. Offers added protection for the motor and slight advantages for allergy sufferers.
|Allergies: The most important factor is the ability to exhaust a system; any dust leakage is exhausted to outside the home. Additionally, units with combination filtration systems may offer slightly better dust capture for persons with allergies.|
No manufacturer recommends using a standard built-in system for picking up water. Small amounts of water in the house would probably not harm a bagless unit; if done, the canister should be emptied immediately after cleaning. If significant amounts of water need to be cleaned up, e.g., for cleaning around a pool area or in a restaurant, there are two alternatives. A portable add-on to the standard vacuum system, called an “interceptor” can be included for safe water pickup, or a system designed for water pickup, like Aqua-Air, can be used.