Your Filter Handles What the Skimmer Cannot
Skimming removes visible debris from the surface. The filter handles much of what remains, including fine dirt, pollen, dead algae and suspended material that can make water look dull or cloudy.
As that material collects, filter pressure can rise and water flow can fall. The pump may have to work harder while the pool receives less effective circulation. Professional pool filter cleaning removes the buildup and gives the filtration system a better chance to do its job.
Sun Harbor Pools services residential cartridge, diatomaceous earth and sand filters according to their design and condition.
Cartridge Filter Cleaning
Cartridge filters use pleated elements to capture fine debris. Proper cleaning requires opening the tank safely, removing the cartridges and rinsing between the pleats without damaging the material.
We look for collapsed pleats, cracked end caps, torn material, broken bands and buildup that does not release during normal cleaning. A cartridge can look cleaner after rinsing and still be too worn to filter properly. When replacement appears necessary, we explain what we see.
A pressure washer should not be used on most cartridge elements. The force can damage the filter media and shorten its useful life.
DE Filter Cleaning
Diatomaceous earth filters can provide very fine filtration, but they need correct cleaning and recharging. Depending on the filter design and service required, the process may include opening the tank, cleaning the grids or elements, checking for visible tears and adding the correct amount of DE media after reassembly.
DE handling and disposal should be performed carefully. A simple backwash does not always replace the need for a full internal cleaning.
Sand Filter Service
Sand filters are normally cleaned through backwashing and rinsing. Over time, the sand can channel, clump or lose effectiveness. A sand change is different from routine cleaning and is quoted separately when the filter condition indicates it may be needed.
If a sand filter continues to run at abnormal pressure or the water remains cloudy after normal maintenance, the problem may involve the sand, valve, laterals, circulation or water chemistry. It should be evaluated rather than repeatedly backwashed without a diagnosis.
Signs a Filter May Need Cleaning
- Filter pressure has risen above the pool's normal clean reading.
- Return flow feels weaker than usual.
- The water remains hazy despite balanced chemistry.
- The pump basket does not fill normally.
- The pool develops recurring algae in low-circulation areas.
- The filter has not been opened or professionally serviced in a long time.
- A heavy storm, green-pool recovery or major debris event loaded the filter.
Pressure is meaningful only when compared with the filter's normal clean starting point. Different systems operate at different pressures.
What Our Filter-Cleaning Visit Includes
The exact work depends on filter type, accessibility and condition. A typical visit may include safe shutdown, pressure release, opening or backwashing as appropriate, cleaning the filter media, observing visible seals and components, reassembly, restart and a final circulation check.
Replacement parts, damaged components, plumbing repair and filter replacement are not included unless separately approved.
Frequently Asked Questions
How often should a pool filter be cleaned?+
There is no single interval that fits every pool. Filter type, pressure rise, pool size, debris, landscaping and recent water problems all affect the schedule. Pressure and condition are better guides than the calendar alone.
Can I clean a cartridge filter with a pressure washer?+
That is generally not recommended. Excessive pressure can separate or damage the pleats. A controlled hose rinse is safer for most cartridge filters.
Will filter cleaning fix cloudy water?+
It can help when restricted or dirty filtration is part of the problem. Cloudy water can also come from chemistry, circulation, algae or equipment issues, so the entire condition should be considered.
Do you replace filter cartridges?+
If the cartridges appear torn, collapsed or worn out, Sun Harbor Pools can explain the condition and quote replacement separately when available.