Your pool filter works every hour the pump runs, catching dirt, debris, and dead algae before it can cloud the water. Over time, all of that material builds up, and the filter becomes less effective. Knowing when to clean it is one of the simplest ways to keep a pool clear and protect your pump.
Here is how to tell when your filter needs attention and how often Glendale pools usually need it.
Watch the Pressure Gauge
Most filters have a pressure gauge on top. Right after a thorough cleaning, note the reading. That is your clean baseline. As the filter collects debris, the pressure slowly rises. When the gauge reads several pounds above your clean baseline, it is usually time for a cleaning. A gauge that is stuck, foggy, or reads zero while the pump is running should be checked or replaced.
Other Signs the Filter Needs Cleaning
- Weak flow from the return jets
- Water that looks dull or slightly cloudy even when chemistry is in range
- A pool that takes longer than usual to clear after a storm or heavy use
- Debris or fine sediment blowing back into the pool
- The pump sounding strained or running louder than normal
How Often Glendale Pools Need Filter Cleaning
Most pools benefit from a thorough filter cleaning several times a year. In Glendale, a few local factors can increase that:
- Seasonal winds that carry dust, pollen, and fine debris into the pool
- Leaves from mature trees, especially in foothill neighborhoods
- Long summer pump run times that push more water through the filter
- Very hard local water, which can leave mineral deposits on filter media
- Algae cleanups, which load the filter heavily in a short time
Cleaning Methods by Filter Type
Cartridge filters are opened and each cartridge is removed and rinsed thoroughly, with attention to the pleats. Sand filters are usually backwashed, which reverses water flow to flush trapped dirt out. DE filters are backwashed or taken apart so the grids can be cleaned, then recharged with fresh DE powder. In each case, O rings, clamps, and the tank should be checked for wear and leaks.
Why Regular Filter Cleaning Pays Off
A clean filter traps smaller particles, keeps water clearer, and helps sanitizer work efficiently. It also lowers the strain on your pump, since the pump does not have to push water through a clogged filter. Skipping cleanings is a common cause of cloudy water and of avoidable pool pump repair.
Let Us Handle Your Filter
Our pool filter cleaning service covers cartridge, sand, and DE filters. Filter checks are also part of weekly pool maintenance. Contact Glendale Pool Service to schedule a cleaning.