Pool Filter Cleaning & Replacement

Your Filter Works Hard Every Day

Your pool filter is one of the hardest-working pieces of equipment you own. It runs for hours every single day, pulling water through and trapping dirt, debris, oils, and contaminants. Over time, all that trapped material builds up and reduces how well your filter works. A dirty or worn-out filter makes your water cloudy, increases chemical costs, and forces your pump to work harder.

Regular filter cleaning and timely replacement keep your pool water clear and your equipment running efficiently. We provide professional filter services for all types of pool filters throughout Cupertino and the Bay Area. Whether you need routine cleaning, deep maintenance, or a complete filter replacement, we handle it all.

Understanding Your Filter Type

Pool filters come in three main types, and each one requires different maintenance. Knowing what type you have helps you understand what service it needs.

Sand filters are the most common in residential pools. They use a tank filled with special sand that traps particles as water flows through. Sand filters need backwashing every few weeks to flush out trapped debris. The sand itself should be replaced every 3 to 5 years as it loses effectiveness.

Cartridge filters use a pleated paper-like element to catch debris. These filters are very efficient and easy to maintain. You remove the cartridge, spray it clean with a hose, and put it back. Cartridges need deep cleaning with a degreaser every 3 to 6 months and replacement every 2 to 3 years.

DE filters (diatomaceous earth) provide the finest filtration. They use a powder made from fossilized organisms to create an extremely fine filtering surface. DE filters catch the smallest particles but require more maintenance. They need backwashing and fresh DE powder added regularly, plus complete teardown cleaning once or twice a year.

We work on all three types. During our weekly pool cleaning visits, we monitor filter pressure and performance to let you know when cleaning or service is needed.

Our Filter Services

We offer several levels of filter service depending on what your system needs:

• Backwashing: For sand and DE filters, we reverse the water flow to flush out trapped debris
• Cartridge rinsing: Quick cleaning with a hose to remove surface debris between deep cleanings
• Deep chemical cleaning: Soaking cartridges or grids in degreasing solution to remove oils and buildup
• Sand replacement: Complete removal and replacement of filter sand when it no longer works effectively
• Cartridge replacement: Installing new cartridge elements when old ones wear out
• DE grid replacement: Replacing the internal grids in DE filters that become damaged or worn
• Filter inspection: Checking for cracks, leaks, or damage that could affect performance
• Complete filter replacement: Installing an entirely new filter system when repairs are not cost-effective

We recommend the right service based on your filter's condition and type. Sometimes a simple cleaning is enough. Other times, replacement parts or a new filter make more sense. We always explain your options and give you honest recommendations.

When Your Filter Needs Attention

Your filter tells you when it needs service through several warning signs. Pay attention to these indicators:

High pressure reading: Your filter gauge shows pressure 8 to 10 PSI higher than normal. This means the filter is clogged and needs cleaning. Continuing to run a clogged filter strains your pump and reduces water circulation.

Cloudy water: If your water looks hazy or dull even with proper chemical levels, your filter is not catching particles effectively. This suggests it needs deep cleaning or replacement.

Reduced water flow: Weak flow from return jets indicates the filter is restricting circulation. This makes your entire system less efficient and can cause other problems.

Shorter cleaning cycles: If you need to backwash or clean your filter more frequently than before, the filter media is probably worn out and needs replacement.

Algae growth: Pools that develop algae problems despite good chemical levels often have filter issues. If you recently needed our algae removal service, we probably checked your filter.

Visible damage: Cracked cartridges, torn grids, or broken filter housing all require immediate attention to prevent bigger problems.

Why Choose Professional Filter Service

Many pool owners try to handle filter maintenance themselves, and basic tasks like backwashing or hosing off a cartridge are manageable. But deep cleaning and replacement require experience, proper tools, and sometimes parts that are hard to find.

We have cleaned and replaced hundreds of pool filters across the Bay Area. We know how each type should perform and can spot problems that homeowners often miss. We use commercial degreasing chemicals that work much better than household cleaners. We stock common replacement cartridges and can order specialized parts quickly.

When we service your filter, we also inspect related equipment like your pump, valves, and plumbing. Often filter problems are symptoms of other issues. A leaking pump seal or damaged valve can stress your filter. We catch these problems early and help you avoid expensive repairs. Our comprehensive pool equipment repair service handles any related issues we discover.

Professional service also ensures proper disposal of old filter media and parts. You do not have to figure out how to get rid of 200 pounds of old sand or what to do with a dirty cartridge. We handle everything and leave your equipment area clean.

Frequently Asked Questions