Future Way CCP420 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 420, Replace Pentair R173576, Pleatco PCC105-PAK4, 420 s
- Perfect Match: Compatible with Pentair Clean & Clear Plus 420/160301/178584 pool filter. Replace Pentair R173576, Pleatco PCC105/PCC105-PAK4, Waterway Crystal Water 425, Unicel C-7471/C-7471-4, Filbur FC-1977, Pure N Cle
- NSF/ANSI 50 Certified: Tested and certified by NSF International against NSF/ANSI 50 for the use of safe materials. The trilobal pleated design captures 3x more debris than regular fabric, efficiently trapping leaves, ha
- Easy Maintenance: Trilobal structure repels large particles from entering the inside of CCP420 filter, ensuring they are spread out and preventing stains from building up in any one area. This design allows for easy and
- Extremely Enduring: CCP420 pool filter cartridge features spunbond polyester and a strong inner core, making it capable of withstanding high-pressure water flow and enduring enough to be a worthwhile investment for your
- Economical Pool Maintenance: Regularly cleaning and reusing the filter cartridge is a simple way to minimize water usage. We recommend cleaning the cartridge monthly to maximize its effectiveness and ensure a clean swimm
POOLPURE CCP420 Pool Filters Replaces Pentair Clean and Clear Plus 420, R173576, PCC105, 178584, Ultral-A6, Unicel C-7471, 817-0106, Filbur
- 🍀Specifications: Length: 26"; Outside Diameter: 7"; Top Opening: 3"; Bottom Opening: 3"; Material Area: 105 Sq.ft; Filter Material: Trilobal Filtration Fabric.
- 🍀Compatible Models: PLF105A Pool Filter compatible Pentair CCP420, 160301, Waterway Crystal Water 425, 570-0425, SD-00163, AK-60431, Aladdin 20503, Filbur FC-6470. ★NOTE: This is a compatible spare part and the manufactu
- 🍀 NSF/ANSI 50 Certified Safety: PoolPure pool and spa filters are tested and certified by IAPMO against NSF/ANSI 50 standards for material safety. All components are proven safe for long term water exposure, ensuring no
- 🍀Trilobal Filtration Fabric Design: The innovative trilobal fiber structure provides three times the adsorption surface area compared to conventional filter fabrics. It captures more dirt and sediment while maintaining c
- 🍀Patented Dirt-Locking Technology: Our exclusive dirt-locking structure efficiently captures debris and makes cleaning effortless. During rinsing, trapped dirt is released easily and thoroughly. The filter is simple to r
Future Way C1200 Pool Filter Cartridge Replacement for Hayward Star Clear Plus C1200, Replace Pleatco PA120, Hayward CX1200RE, Unicel C-8412
- Perfect Match: Compatible with Hayward Star Clear Plus C1200 pool filter. Replacement for Hayward CX1200RE, Pleatco PA120/PA120-4, Unicel C-8412, Filbur FC-1293, Waterway Pro Clean PCCF-125, 817-0125N, Clearwater II 125.
- NSF/ANSI 50 Certified: Tested and certified by NSF International against NSF/ANSI 50 for the use of safe materials. The trilobal pleated design captures 3x more debris than regular fabric, efficiently trapping leaves, ha
- Dimension: With an outer diameter of 8-15/16'', inner diameter of 4'' and a height of 23-1/4'', C1200 pool filter cartridge can be easily installed in your filter without worrying about leaks or compatibility issues
- Extremely Enduring: C1200 pool filter cartridge features spunbond polyester and a strong inner core, making it capable of withstanding high-pressure water flow and enduring enough to be a worthwhile investment for your p
- Economical Pool Maintenance: Regularly cleaning and reusing the filter cartridge is a simple way to minimize water usage. We recommend cleaning the cartridge monthly to maximize its effectiveness and ensure a clean swimm
That steadily climbing pressure on your pool filter gauge means your system is working harder than it should be, usually due to a clog. High pressure means your filter is working harder than it should be, struggling to push water through some sort of blockage. This not only makes your filtration less effective, leading to cloudy water, but it also puts unnecessary strain on your pump, potentially shortening its lifespan and increasing your energy bill.
As an expert writer for a DIY and home improvement website, I'm here to guide you through the common causes of high pool filter pressure and provide practical, step by step fixes. We'll start with the easiest and cheapest solutions and work our way to more involved repairs. By the end, you'll know exactly how to diagnose and resolve a high-pressure issue, and when it's time to call in a pro.
Understanding Your Pool Filter Pressure
First, it's important to know what 'normal' pressure looks like for your pool. When you first install a new filter or after a thorough cleaning, take note of the pressure gauge reading. This is your system's baseline or 'clean' pressure. As your filter traps debris, the pressure will naturally rise. A good rule of thumb is that when your pressure gauge reads 8-10 PSI (pounds per square inch) above your clean pressure, it's time for cleaning or backwashing.
A consistently high reading, especially one that doesn't drop after routine cleaning, points to a more persistent problem. This could be anything from a simple clog to an issue with your pump or plumbing. Let's explore the common causes of high pressure in pool filter systems.
Common Causes of Pool Filter Pressure Too High
Before we jump into fixes, understanding the potential culprits can help you narrow down the diagnosis. Here are the most frequent reasons your pool filter pressure might be too high:
- Dirty or Clogged Filter: This is the most common reason. As the filter media (sand, DE powder, or cartridges) captures debris, it becomes less permeable, making the pump work harder to push water through.
- Clogged Skimmer or Pump Baskets: Large debris like leaves, twigs, or toys can block the flow of water into the pump, creating resistance and increasing pressure.
- Clogged Pump Impeller: The impeller inside your pool pump is responsible for moving water. If it gets jammed with hair, small debris, or mineral buildup, it can restrict flow and cause a pressure spike. This can manifest as your pool pump pressure too high.
- Blockage in Return Lines: Anything obstructing the water flow after it leaves the filter and before it returns to the pool (like a collapsed pipe, mineral buildup, or a small toy) will increase pressure.
- Malfunctioning Multiport Valve: For sand and DE filters, the multiport valve directs water flow. If its internal components (like the spider gasket) are damaged, it can restrict flow even in the 'filter' setting.
- Air in the System: While air usually causes low pressure, a significant amount of air trapped in the filter can create resistance and lead to high readings.
- Oversized Pump: If your pump is too powerful for your filter or plumbing system, it can force water through too quickly, leading to chronically high pressure. This is a less common but significant cause of pool pump pressure too high.
step by step Fixes for High Pool Filter Pressure
We'll tackle these issues in an order that generally moves from the easiest and least expensive to the more complex and costly.
1. Check and Clear Skimmer and Pump Baskets
This is the first and easiest step. Often, a simple blockage here is the cause of your high pressure.
- Turn Off the Pump: Always do this before working with your pool equipment.
- Inspect Skimmer Baskets: Remove the skimmer lids and lift out the baskets. Clear any leaves, bugs, or other debris. Replace them once clean. If you notice your skimmer isn't working properly, you might find our guide Pool Skimmer Not Working: Diagnose & Fix Suction Issues helpful.
- Inspect Pump Basket: Close the skimmer valve (or plug the skimmer line if you don't have a valve) and close the main drain valve if applicable. Turn the pump off. Release the pressure from the filter by opening the air relief valve. Carefully unscrew the pump lid. Lift out the pump basket and clear any debris.
- Reassemble and Restart: Ensure the pump lid O-ring is clean and lubricated with a silicone-based lubricant. Replace the lid, open all valves, and restart the pump. Observe the pressure gauge.
Cost Estimate: Free. This is a routine maintenance task.
2. Clean or Backwash Your Filter
A dirty filter is the most common cause of high pressure. The cleaning method depends on your filter type.
For Sand Filters: Backwashing
If you have a sand filter and are experiencing pool sand filter pressure too high, it's time to backwash. Backwashing reverses the water flow to flush out trapped debris.
- Turn Off the Pump: Safety first!
- Set Multiport Valve: Move the multiport valve handle to the 'Backwash' position. Make sure the pump is OFF when changing valve positions to prevent damage.
- Backwash: Turn the pump back on. Watch the waste line or sight glass (if your valve has one). You'll see cloudy water initially, which will clear up as the sand gets cleaner. Backwash for 2-3 minutes or until the water runs clear.
- Rinse: Turn the pump off again. Move the multiport valve to the 'Rinse' position. Turn the pump on and run for 30-60 seconds. This settles the sand bed.
- Return to Filter: Turn the pump off. Move the multiport valve back to 'Filter'. Turn the pump on and check the pressure gauge.
Cost Estimate: Free (water usage). If your sand filter pressure too high issue persists after a thorough backwash, you might need to consider a sand change, which costs around $200-400 for materials and labor every 5-7 years.
For DE (Diatomaceous Earth) Filters: Backwashing and Recharging
If you have a DE filter and the DE filter pressure is high, you'll need to backwash and then recharge with new DE powder.
- Turn Off the Pump: Essential for safety.
- Set Multiport Valve: Move the handle to 'Backwash'.
- Backwash: Turn the pump on and backwash for 1-2 minutes until the water runs clear.
- Rinse: Turn the pump off. Move the valve to 'Rinse'. Turn the pump on for 30 seconds.
- Turn Off and Recharge: Turn the pump off. Move the valve back to 'Filter'.
- Prepare DE Slurry: Mix the appropriate amount of DE powder (check your filter manual for dosage, typically 1 pound per 10 square feet of filter area) with water in a bucket to form a thin slurry.
- Add DE: Turn the pump on and slowly pour the DE slurry into your skimmer. The DE will be drawn into the filter and coat the grids.
- Check Pressure: Observe the pressure gauge. It should return to its clean reading.
Cost Estimate: DE powder costs about $15-30 for a 25lb bag, which lasts a while.
For Cartridge Filters: Manual Cleaning or Replacement
Cartridge filters cannot be backwashed. If your pool filter pressure too high is due to a dirty cartridge, you need to manually clean or replace it.
- Turn Off the Pump: Disconnect any automatic timers.
- Release Pressure: Open the air relief valve on top of your filter to release pressure.
- Open Filter Housing: Follow your manufacturer's instructions to open the filter tank and remove the cartridges.
- Hose Off: Use a garden hose with a spray nozzle to thoroughly rinse the pleats of the cartridge. Work from top to bottom.
- Chemical Soak (Recommended): For stubborn dirt, oils, and minerals, soak the cartridges in a specialized filter cleaning solution (available at pool supply stores) overnight. Follow the product instructions for dilution and soak time.
- Rinse and Reinstall: Rinse the cartridges thoroughly after soaking. Reinstall them into the filter housing, ensuring they are seated correctly.
- Close Filter and Restart: Close the filter housing, ensuring the O-ring is clean and lubricated. Close the air relief valve once water begins to flow out steadily. Turn the pump back on and check the pressure.
If your cartridges are old (typically 3-5 years) or damaged, cleaning may not be enough. Replacement is the best solution. For Pentair Clean & Clear Plus 420 filters, we highly recommend the Future Way CCP420 Pool Filter Cartridges Replacement. These are our TOP PICK because they are NSF/ANSI 50 Certified for safety and feature a trilobal pleated design that captures three times more debris than regular fabric, making maintenance easier by repelling large particles and preventing stain buildup. They are a perfect match for Pentair R173576, Pleatco PCC105, and other compatible models.
Alternatively, the POOLPURE CCP420 Pool Filters are another excellent choice, also NSF/ANSI 50 Certified and featuring trilobal filtration fabric. If you have a Hayward Star Clear Plus C1200 filter and are experiencing hayward pool filter pressure too high, consider the Future Way C1200 Pool Filter Cartridge Replacement, which is compatible with Hayward CX1200RE and other popular models, also boasting NSF/ANSI 50 certification and advanced filtration design.
Cost Estimate: Filter cleaning solution: $15-30. Replacement cartridges: $50-200+ per cartridge, depending on size and brand. For a set of four CCP420 cartridges, expect to pay around $150-300.
3. Inspect the Pump Impeller for Clogs
A clogged pump impeller can significantly restrict water flow and cause your pool pump pressure too high. This is a bit more involved but often DIY-friendly.
- Turn Off Power: Crucially, turn off the power to the pump at the circuit breaker. This is an electrical component, so extreme caution is necessary.
- Remove Pump Housing: Disconnect the pipes leading to and from the pump (you may need unions or specialized tools). Remove the bolts securing the wet end of the pump to the motor.
- Access Impeller: Carefully separate the wet end. The impeller is usually visible at the end of the motor shaft, behind a diffuser plate.
- Clear Debris: Use a small screwdriver, needle-nose pliers, or a piece of coat hanger wire to carefully pick out any hair, leaves, or other debris lodged in the impeller vanes. Be gentle to avoid bending the vanes.
- Reassemble: Reassemble the pump in reverse order, ensuring all gaskets and O-rings are clean and properly seated.
- Restore Power and Test: Turn the power back on and start the pump. Check the pressure gauge. If your pump struggles to prime after this, refer to our guide: Pool Pump Not Priming? Here's How to Fix It.
"Many pool owners panic when they see high pressure, but often the solution is as simple as cleaning out a clogged skimmer basket or giving the filter a good backwash," says Linda Kowalski, a certified pool technician at AquaClean Pool Services. "Regular maintenance really prevents most of these issues."
Cost Estimate: Free if DIY. Professional impeller cleaning might cost $100-200 for labor.
4. Check for Air Leaks in the System
Air leaks on the suction side of your pump can sometimes lead to air getting trapped in the filter, causing high pressure. Look for bubbles coming from your return jets.
- Inspect Pump Lid and O-ring: Ensure the pump lid is tightly secured and the O-ring is clean, lubricated, and not cracked or stretched.
- Check Unions and Connections: Examine all plumbing connections on the suction side of the pump (from skimmer to pump) for drips or loose fittings. Tighten any loose connections.
- Test for Leaks: You can use shaving cream or a soapy water solution around suspected leak points. If the foam gets sucked in, you've found an air leak.
Cost Estimate: Free for inspection. Replacement O-rings and silicone lubricant typically cost $5-20.
5. Clear Return Line Blockages
A blockage in the return plumbing, after the filter, will cause the pump to push against resistance, resulting in increased pressure.
- Isolate the Problem: If you have multiple return jets, try plugging them one by one to see if the pressure drops. This can help pinpoint the blocked line.
- Back-flush: For minor blockages, you can sometimes back-flush the line by closing all other return jets and letting the pump run, forcing water through the suspected blocked line.
- Snake the Line: For more stubborn blockages, a plumbing snake might be necessary. This is often best left to professionals as incorrect use can damage pipes.
Cost Estimate: Free if you can clear it yourself. Professional service involving snaking or diagnosing pipe blockages can range from $150-300+.
6. Diagnose Multiport Valve Issues
If you have a sand or DE filter, the multiport valve can sometimes be the culprit for a pool filter pressure too high reading.
- Check Valve Positions: Ensure the handle is firmly in the 'Filter' position and not stuck between settings.
- Inspect Spider Gasket: With the pump off and pressure relieved, you can sometimes carefully remove the top of the multiport valve to inspect the internal spider gasket. If it's torn, swollen, or out of place, it will restrict flow.
- Replacement: A damaged spider gasket needs to be replaced. This can be a DIY job for experienced homeowners, or a task for a pool professional.
Cost Estimate: A replacement spider gasket costs $10-20. A new multiport valve, if the old one is beyond repair, can cost $100-300 for the part alone.
7. Consider Your Pump Sizing
While less common, an improperly sized pump can lead to chronically high pressure. If your pump is simply too powerful for your filter or plumbing, it will always struggle to push water through.
If you've tried all other solutions and your pool pump pressure too high remains an issue, especially if it's an above ground pool pump pressure too high, you might have an oversized pump. This is more common in above ground pools where owners sometimes upgrade to a larger pump without considering the filter's capacity or plumbing diameter.
"While a dirty filter is the most common culprit, don't overlook air leaks or even an improperly sized pump," advises Steve Barnett, owner of ProFlow Pool Solutions. "Those less obvious problems can cause persistent high pressure and lead to premature equipment failure if not addressed."
Solution: The solution here is either to replace the pump with a more appropriately sized model or, if your pump has a variable speed setting, to reduce its RPMs. For guidance on proper setup, especially for above ground systems, see our article: How to Set Up an Above Ground Pool Pump Correctly.
Cost Estimate: A new, appropriately sized pool pump can cost $300-1000+. Professional installation might add another $200-500.
When to Call a Professional
While many of these troubleshooting steps are manageable for a DIY enthusiast, there are times when calling a professional pool technician is the smartest move. Consider calling for help if:
- You've tried all the above steps, and the pressure remains high.
- You suspect a major pipe blockage that requires specialized equipment to clear.
- You're uncomfortable working with electrical components or disassembling the pump.
- Your multiport valve needs internal repair beyond a simple gasket replacement.
- You suspect your pump is oversized and need advice on replacement or adjustment.
A professional service call typically costs $75-150 for diagnosis, plus $75-150 per hour for labor and the cost of any parts. While it's an investment, it can prevent further damage to your equipment and ensure your pool system runs safely and efficiently.
Keep Your Pool Flowing Smoothly
Dealing with pool filter pressure too high can be frustrating, but with a systematic approach, you can usually pinpoint and fix the problem yourself. Regular maintenance, like checking baskets and cleaning your filter, goes a long way in preventing these issues. By understanding your pool system and addressing problems promptly, you'll ensure clear water, prolong the life of your equipment, and enjoy your pool season to the fullest.
Future Way CCP420 Pool Filter Cartridges Replacement for Pentair Clean & Clear Plus 420, Replace Pentair R173576, Pleatco PCC105-PAK4, 420 s
- Perfect Match: Compatible with Pentair Clean & Clear Plus 420/160301/178584 pool filter. Replace Pentair R173576, Pleatco PCC105/PCC105-PAK4, Waterway Crystal Water 425, Unicel C-7471/C-7471-4, Filbur FC-1977, Pure N Cle
- NSF/ANSI 50 Certified: Tested and certified by NSF International against NSF/ANSI 50 for the use of safe materials. The trilobal pleated design captures 3x more debris than regular fabric, efficiently trapping leaves, ha
- Easy Maintenance: Trilobal structure repels large particles from entering the inside of CCP420 filter, ensuring they are spread out and preventing stains from building up in any one area. This design allows for easy and
- Extremely Enduring: CCP420 pool filter cartridge features spunbond polyester and a strong inner core, making it capable of withstanding high-pressure water flow and enduring enough to be a worthwhile investment for your
- Economical Pool Maintenance: Regularly cleaning and reusing the filter cartridge is a simple way to minimize water usage. We recommend cleaning the cartridge monthly to maximize its effectiveness and ensure a clean swimm
POOLPURE CCP420 Pool Filters Replaces Pentair Clean and Clear Plus 420, R173576, PCC105, 178584, Ultral-A6, Unicel C-7471, 817-0106, Filbur
- 🍀Specifications: Length: 26"; Outside Diameter: 7"; Top Opening: 3"; Bottom Opening: 3"; Material Area: 105 Sq.ft; Filter Material: Trilobal Filtration Fabric.
- 🍀Compatible Models: PLF105A Pool Filter compatible Pentair CCP420, 160301, Waterway Crystal Water 425, 570-0425, SD-00163, AK-60431, Aladdin 20503, Filbur FC-6470. ★NOTE: This is a compatible spare part and the manufactu
- 🍀 NSF/ANSI 50 Certified Safety: PoolPure pool and spa filters are tested and certified by IAPMO against NSF/ANSI 50 standards for material safety. All components are proven safe for long term water exposure, ensuring no
- 🍀Trilobal Filtration Fabric Design: The innovative trilobal fiber structure provides three times the adsorption surface area compared to conventional filter fabrics. It captures more dirt and sediment while maintaining c
- 🍀Patented Dirt-Locking Technology: Our exclusive dirt-locking structure efficiently captures debris and makes cleaning effortless. During rinsing, trapped dirt is released easily and thoroughly. The filter is simple to r
Future Way C1200 Pool Filter Cartridge Replacement for Hayward Star Clear Plus C1200, Replace Pleatco PA120, Hayward CX1200RE, Unicel C-8412
- Perfect Match: Compatible with Hayward Star Clear Plus C1200 pool filter. Replacement for Hayward CX1200RE, Pleatco PA120/PA120-4, Unicel C-8412, Filbur FC-1293, Waterway Pro Clean PCCF-125, 817-0125N, Clearwater II 125.
- NSF/ANSI 50 Certified: Tested and certified by NSF International against NSF/ANSI 50 for the use of safe materials. The trilobal pleated design captures 3x more debris than regular fabric, efficiently trapping leaves, ha
- Dimension: With an outer diameter of 8-15/16'', inner diameter of 4'' and a height of 23-1/4'', C1200 pool filter cartridge can be easily installed in your filter without worrying about leaks or compatibility issues
- Extremely Enduring: C1200 pool filter cartridge features spunbond polyester and a strong inner core, making it capable of withstanding high-pressure water flow and enduring enough to be a worthwhile investment for your p
- Economical Pool Maintenance: Regularly cleaning and reusing the filter cartridge is a simple way to minimize water usage. We recommend cleaning the cartridge monthly to maximize its effectiveness and ensure a clean swimm
