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HC-Pedia Entry
Vacuum Cleaners

Air watt

Tagged: Air Watt, Airflow, Suction, Vacuum Cleaners, Vacuuming

An air watt is a measure of the effective power of a vacuum cleaner, established by ASTM International (formerly the American Society for Testing and Materials).

 

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The air-watt rating of a particular system is determined by multiplying air flow by suction power, and then dividing the product by 8.5. In the formula, air flow is measured in cubic feet per minute, while suction is measured by inches of water lift, or the distance water rises through a vertical instrument when suction is applied.

 

The higher the air watt rating, the more cleaning power is available.

 

Constant air watts is a more accurate gauge than peak air watts.

 

 

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Air watt:  Created on November 3rd, 2009.  Last Modified on December 25th, 2009

 

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