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How to Know If Your Pool Filter Needs Repair or Replacement

Your pool filter plays a vital role in keeping your swimming pool clean, safe, and enjoyable. It’s easy to overlook—until the water starts turning cloudy, the pressure gauge goes wild, or your pool pump struggles to keep up. The good news? Most pool filter problems can be resolved quickly when caught early. The key is knowing when your filter needs repair or full replacement.

Common Signs of a Pool Filter Problem

While different types of filters (cartridge, sand, and DE) have unique components, several signs point to an issue regardless of type:

• Cloudy Water: If your chemicals are balanced but the water still looks hazy, your filter might not be trapping debris effectively.
• Low or High Filter Pressure: Both extremes could indicate a clog, leak, or worn-out internal component.
• Visible Damage: Cracks in the filter tank or worn-out cartridges mean the unit is no longer sealing or filtering correctly.
• Frequent Backwashing or Cleaning: If you’re cleaning your filter more than usual, it might be time for repair or replacement.
• Air in the System: Air bubbles in the return lines or strange noises could be a sign of suction-side leaks affecting your filter’s function.

Repair or Replace? What’s Best for Your Filter

Knowing whether to repair or replace your pool filter depends on the condition, age, and type of damage. Here’s a simple breakdown:

Consider Repair If:

• You’re dealing with minor clogs or dirty filter media
• The filter housing is intact and undamaged
• You’ve recently replaced the cartridge, sand, or DE grids

Consider Replacement If:

• The tank is cracked or warped
• The filter is over 7–10 years old
• You're frequently repairing or cleaning it without long-term results
• You want to upgrade to a more efficient or modern filter type

Why Filter Issues Shouldn’t Be Ignored

When your filter isn’t working correctly, your pool water can quickly become unsafe. Poor filtration can lead to:

• Algae Growth
• Bacteria Buildup
• Increased Chemical Usage
• Shorter Lifespan for Pumps and Heaters

Neglecting filter maintenance or repairs can turn into a costly mistake—not just in repairs but in downtime and potential health risks.

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