Free Sample
The Complete Handbook of Pool Skimmers
A Practical Reference for Pool Professionals, Facility Managers, and Serious Hobbyists
by Alumigogo Books
Chapter 1: Understanding Pool Skimmers
Understanding Pool Skimmers
A pool skimmer is not a catch-basin. It is a mechanical system that removes floating debris from the water surface, manages water circulation, and protects the pump from damage. Understanding what a skimmer actually does—and what it does not do—is essential before choosing, installing, or troubleshooting one.
Most pool owners and some service technicians think of a skimmer as a simple basket that traps leaves. In fact, the skimmer is a controlled suction point that draws water from the pool surface and routes it toward the pump and filter. The skimmer intake, the weir gate (the floating mouth), the basket, the valve assembly, and the plumbing all work together to accomplish this task. If any component fails or is sized incorrectly, the entire circulation system suffers—the pump cavitates, the filter clogs prematurely, or debris bypasses the basket and enters the pump impeller.
The core function of a skimmer is surface collection. Pool water contains floating debris: leaves, pollen, algae films, sunscreen, and dust. This debris accumulates at the surface because it is less dense than water. Without active surface collection, this material either sinks and becomes floor debris (requiring manual cleanup) or breaks down in the water, degrading water chemistry. A properly functioning skimmer removes floating material continuously, before it can sink or decompose.
A secondary function of the skimmer is circulation management. The skimmer inlet is the primary suction point for water entering the pump. Depending on the pool