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Air blowers are devices that act like a vacuum cleaner working in reverse... and sound like it too.

Provided in 115 and 230 volt versions, and rated from 1 to 2 horsepower, they simply blow air into air manifolds (and on to the air 'injector' in the spa), or into a blower air channel that is part of the spa fiberglass shell.
Various Blowers



One of the key factors in designing a blower air system, is preventing water from flowing backwards into the blower motor assembly.  This may look confusing when you look underneath your spa, but it's quite simple if you follow the below diagrams.
 

Blower Configuration Blower Configuration

Blower Configuration Blower Configuration

Blower Configuration Blower Configuration

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