Whether you have an inground spa (shown below) or
portable/movable spa or wooden hot tub, they all
essentially work the same:
-
There's a spa body with an interior surface of vinyl, plaster,
tile, fiberglass or a combination of these materials.
-
Spa Water is drawn into the filter system (blue lines) from the
skimmer & main drain
-
Water comes into the filter system thru the 3-way valve (if
equipped) & into the pump / motor

-
Water travels into the filter (typically Cartridge)
where fine dirt & debris are removed
-
After the filter, the clean or cleaner, filtered water goes thru
the heater (usually electric, especially on portable/movable spas with skirts
that are self contained)
-
Filtered & heated water returns to the pool (red
lines) thru the return jets
-
Air is typically mixed with or injected into
the jets through the Venturi control
-
Air is blown through or bubbled through the
usually separate air system through holes in the bottom of the seating area
and/or floor
For more information on the workings of your pool, click on the
6 Keys to Pool Care
All information contained in this
article is courtesy of the BioGuard Chem PLUS 2003, 2004 & Chem College 2007 Reference Guide.
For Spa & Hot tub plumbing & parts,
click here
Replacement Filter Cartridges,
click here |