You’ve spent a day in the scorching heat, and now you are all set to dip in your backyard swimming pool, but wait? There’s dirt and debris inside the pool. Buy the best pool cartridge filter and say goodbye to such experiences. These filters contain a cartridge inside a metallic box. The cartridge has closely spaced longitudinal rows of polyester filter media. The water flows through the cartridges at high speed, and the filter media act as a sieve, capturing tiny dust particles.
I remember last summer when I installed a top-of-the-line pool cartridge filter for the first time. After my family and I spent an entire day cleaning the pool manually, the water was still not as clear as we wanted. You can understand our frustration. A friend recommended that we try a cartridge filter. Hesitant yet hopeful, I made the switch, and the difference was eye-opening. The water clarity improved dramatically, and our pool maintenance became a breeze.
After discovering the wonder of cartridge filters, I later learned that not all such filters are created equally. In this article, I’ll walk you through the best pool cartridge filters on the market, provide valuable tips for maintenance and troubleshooting, and equip you with all the knowledge you need to choose the perfect filter for your pool. If you want to learn more, check out the frequently asked questions at the end of this article.
What to Look for in a Pool Cartridge Filter
The first step to a clearer pool is selecting the best type of pool filter. Numerous options in the market will get you confused. But keep these three simple factors in mind, and you’ll easily find the best pool cartridge filter.
- Square Footage Matters
Finding the right balance is the key – a filter that’s too small won’t be able to handle the cleaning. At the same time, one that’s too large might be an unnecessary expense.
As a general guideline, aim for about 100 sq. ft. of filter capacity per 10,000 gallons of pool water. If your pool has 10,000 gallons of water, find a pool cartridge filter with 100 sq. ft of cartridge surface area. This ratio can vary depending on the debris and contaminants you regularly find in your pool.
If your pool faces challenges like algae growth, pets, heavy bather loads, or has tress shedding leaves around it, you should opt for a larger filter to ensure optimal performance.
You can consult the following standards to save time.
| Gallons | Minimum Pool Size | Maximum Pool Size |
| 5,000 | 50 sq. f | 100 sq. ft |
| 10,000 | 100 sq. ft | 150 sq. ft |
| 15,000 | 150 sq. ft | 250 sq. ft. |
| 25,000 | 250 sq. ft | 450 sq. ft |
| 35,000+ | 350 sq. ft. | 550 sq. ft |
If you want to buy a less costly filter, you can supplement it with a pool vacuum that has fine mesh filters. This can help trap additional debris before it reaches the filter, reducing the load and prolonging the life of your cartridge filter.
Pro Tip: Always ensure your pool pump’s GPM (gallons per minute) is close to the filter’s GPM. A mismatch between these two can lead to inefficient filtration and filter damage. A variable speed pump would make your life easier, as you can easily adjust the RPMs to control the GPM and ensure optimal filtration.
- Unions and Plumbing Compatibility
Ensure your cartridge filter is compatible with your pool’s plumbing system. There are different filters for above-ground and inground pools, and they come with different union fittings to connect them to the plumbing.
Check the unions to see if they match your plumbing type, whether it’s PVC pipes or corrugated plastic hoses. Inground pools typically have PVC pipes, while above-ground pools commonly use corrugated plastic hoses. Right-sized unions ensure a secure and leak-free connection. Also, avoid using the adapters, as they can cause operational issues by restricting the water flow.
Some filters have unions next to each other, while others have them on opposite sides. Some filters even have unions on the top or bottom.
The orientation of the unions also influences the ease of installing the filter, especially if you have limited space on your equipment pad. For example, the Hayward SwimClear series has unions with one on top of the other, which can make plumbing more manageable for small equipment pads. On the other hand, the Pentair Clean & Clear series has unions on opposite sides, which might appeal to those looking for a neater installation.
- GPM Rating: The Efficiency Factor
The GPM rating indicates how much water the equipment can filter per minute. Therefore, GPM determines how quickly the filter can circulate and clean the pool water.
To calculate the hourly filtration rate, multiply the filter’s GPM by 60. For example, a filter with a 100 GPM rating can clean up to 6,000 gallons per hour. The filter’s GPM is closely tied to the pump’s GPM; ideally, they should be well-matched. While they don’t have to be exact, a close match ensures the best filtration performance.
During the summer, running the pool pump enough for one to two full cycles each day is a good idea. For the winter months, you can suffice with only one cycle per day.
The size of the filter does not always determine its GPM rating. Some filters can handle high GPM rates but might struggle with higher pressure (PSI). Always choose a filter that can cycle the pool’s total gallon capacity within five to six hours. Therefore, avoid cartridge filters with a GPM rating below 100, as they might not provide adequate filtration for your pool.
How I Compiled The List of Best Pool Cartridge Filter
I have chosen the cartridge filters based on:
- Manufacturer reputation: The list has products from well-reputed brands with established positive customer experiences.
- Customer reviews: All the filters on the list have positive ratings on online stores.
- Ease of maintenance: Cartridge filters on my list are easy to maintain, saving you time and money.
- Efficient flow rates: I have chosen above-ground and inground pool setup options.
- Durability: I look for filters that are strong and last longer.
Above-Ground Vs. Inground Pools
Let’s take this concept out of the way first, as the specific pool filters you will buy depend upon the pool type you have:
| Aspect | Above-ground pool | Inground pool |
| Materials | Metal, resin, or durable PVC. | Concrete, fiberglass, or vinyl. |
| Support | Metal framework or sturdy walls. | Custom construction with excavation. |
| Installation | They are easier to install and more affordable because they are usually smaller | More complex installation and costly due to larger sizes |
| Popularity | A popular choice for budget-conscious homeowners | A preferred choice for long-term investment and customization |
| Longevity | It is a semi-permanent structure that can be disassembled/moved | Permanent fixture and adds value to the property |
| Design flexibility | Limited shapes and sizes | Customizable shapes and sizes |
| Filtration options | Cartridge filters, occasionally sand filters | Sand filters, cartridge filters, and DE filters |
| Cost | Generally more budget-friendly | More expensive investment |
| Maintenance | Generally easier and simpler | It may require more extensive maintenance |
| Property impact | A temporary solution May not add property value. | It adds value to the property and enhances the backyard landscape. |
Top 3 Best Above-Ground Pool Cartridge Filters
Here is my list of the top 3 cartridge filters you should look out for in the market if you have an above-ground pool.
- Intex Krystal Klear Cartridge Filter Pump
If you are looking for the best cartridge filter for above ground pool, the INTEX C1000 Krystal Clear Cartridge Filter Pump is an excellent choice. This filter pump is available at flow rates ranging from 330 to 1,500 gallons per hour. Moreover, the maintenance is relatively easy – just clean your Type A or C filter cartridge every couple of weeks, and you’re good to go.
Setting up the filter is simple, too; just attach the hoses and plug the filter in using the 25-foot power cord. You’ll notice that the hoses are 1.25 inches, so you will need an adapter if your pool has 1.5-inch hose fittings. The filter also features an air-release valve that removes trapped air in the chamber.
What’s even better about this filter is its Hydro Aeration technology. It mixes air into your pool water, which improves the water quality and increases negative ions, leaving your pool water fresh and inviting. See the YouTube video below from Intex Recreation Corp to get an idea of what this technology is about.
The only slight limitation is that the manufacturer recommends using the filter for only eight hours daily. Nevertheless, this is still ample time to thoroughly clean a small pool and keep it looking pristine all season long.
Pros:
- Easy maintenance
- Simple setup
- Hydro-aeration technology
- Variable flow rates
- Air release valve
Cons:
- Limited daily usage
- No built-in support for 1.5-inch hose fittings
- Doheny’s Cartridge Filter
The Doheny’s Cartridge Filter System is the right fit for pools with less than 12,000 gallons of water.
It has a .75-horsepower high-efficiency pump with a flow rate of 73 gallons per minute. It circulates and filters your pool water like a charm, keeping it sparkling clean and inviting.
Another fantastic element is the durable thermoplastic filter that catches the debris without giving up. Plus, the non-woven cartridge enhances the effectiveness of the filter. Not only does it make your pool water crystal clear, but it also lets you go longer between filter changes. And let’s not forget the optimized water flow it brings to the table, ensuring top-notch filtration.
The design is super user-friendly, and the filter has a ring-lock lid, which makes swapping the cartridge a breeze. The pressure gauge and release valve tackle any built-up air pressure, so you can keep things running smoothly. Oh, and don’t forget that fastening locking system. It prevents any annoying lid from sticking during maintenance.
Setting it up is no biggie. Just plug the CSA and ETL-certified .75-horsepower pump into a standard three-prong 6-foot cord connection, and you’re good to go. Just note that you’ll have to buy the hoses separately. These features make Doheny’s filter a strong contender for the best cartridge filter for above-ground pools.
Pros:
- Perfect for smaller pools
- Efficient pump
- Durable thermoplastic filter
- Optimized water flow
- CSA and ETL certified
Cons:
- Hoses are to be bought separately
- Hayward XStream 150 Cartridge Filter System
Hayward XStream 150 Cartridge Filter System is perfect for pools up to 33′ round and 21’x43′ oval, making it a great fit for many above-ground pool owners.
This comprehensive system has all the essentials – filter tank, filter cartridge, union connection, air relief valve, pressure gauge, 1.5 HP Power-Flo pump, filter base, 1-1/2″ x 6′ filter hoses, hose adapters, hose clamps. Just name any component, and this filter system already has it. You’ll have to spend some more money, but peace of mind over everything, right?
The Easy Lok ring is quite a handy feature that makes removing the cartridge from the filter tank a breeze. But wait, there’s more! The system can filter up to 120 gallons per minute or 57,600 gallons in 8 hours, thanks to its powerful 1.5HP Power-Flo pump.
Setting the Hayward XStream up is very easy as well. The system has a 6′ power cord that you can plug into a standard 115V outlet, and the pump’s amperage is 12 Amps. It’s also efficient, displaying a Weighted Energy Factor of 3.9, which means the filter can pump 3,900 gallons per kWh.
The best part? It’s made in the U.S.A. by Hayward Pool Products, a trusted name in the pool industry. And to top it off, it comes with a 1-year limited manufacturer’s warranty so that you can have peace of mind.
The filter system measures 28″ (L) x 26″ (W) x 40″ (H). It’s compact and fits neatly into your pool area, so no need to worry about it taking up too much space.
With its easy maintenance, high flow rate, and reliable performance, it’s the best pool cartridge filter for a crystal clear pool all season long!
Pros:
- The setup includes all the necessary components, allowing you to set it up and start using the filter right away.
- The high flow rate of 57,600 gallons per 8 hours provides efficient and fast filtration.
- Good energy efficiency as it can pump 3,900 gallons of water per kWh.
- The compact design fits neatly with most pools.
- Made in the USA with one year warranty to provide peace of mind.
Cons:
- No significant cons
Top 3 Best Inground Pool Cartridge Filters
The following list includes the top 3 contenders for the best cartridge filter for inground pools.
- Hayward W3C5030 SwimClear Cartridge Pool Filter, 525 Sq. Ft.
The Hayward SwimClear 525 Sq. Ft. Pool Filter provides outstanding filtration and hydraulic performance while keeping operating costs low. It has cleanable cartridge elements, which eliminates the need for frequent backwashing. This will help you save up to 2,500 gallons of water yearly. This way, you’ll enjoy clear and fresh pool water and contribute to water conservation efforts.
Hayward claims the filter can withstand the toughest environmental conditions thanks to its durable build. This is a positive sign if you live in areas with frequent rainfall or harsh climates.
Hayward has prioritized user convenience while designing this filter. Its heavy-duty, tamper-proof, one-piece flange clamp securely fastens the tank top and bottom, providing quick access to all internal components without disrupting plumbing connections. This easy access simplifies maintenance and makes filter cleaning easy.
This pool filter features a high-capacity manual air relief valve, which can release all the trapped air with a quarter turn. This feature ensures optimal filtration efficiency and prevents any potential air-related issues.
The Hayward cartridge filter utilizes a top manifold design, offering longer cleaning cycles by using the entire surface area of the cartridge. This configuration ensures maximum flow through all cartridge elements, delivering unmatched water clarity and significant energy savings.
Due to its reusable polyester cartridge elements and precision-engineered cores, the filter can handle heavy-duty dirt-holding tasks easily. It is compatible with numerous pool sizes, including 225, 325, 425, 525, and 700 sq. ft. pools.
Pros:
- No need for backwashing
- Saves 2,500 gallons of water yearly
- Longer cleaning cycles
- Durable build
- Compatible with various pool sizes
Cons:
- There’s a reason this makes it to the top of my list. No significant cons
- Pentair Clean And Clear Cartridge Inground Pool Filter
If you’re looking for the best cartridge filter for an inground pool, you wouldn’t want to miss out on this one. The Pentair Clean and Clear Plus CCP420 EC Cartridge Filter keeps your inground pool sparkling clean with minimal effort.
First off, it has four cartridges that trap lots of dirt, meaning you won’t have to clean it as often. Simply, more pool time and less maintenance hassle! The filter can remove particles up to 20 microns small, which means clear water for you and your friends to enjoy.
Thanks to the 2-inch plumbing with easy-to-use bulkhead unions, installation is an easy task. On top of that, cleaning the filters is quite simple as well. Just hose off the cartridges, and you’re good to go! No fancy procedures or complicated tools are required.
The sturdy fiberglass-reinforced tank means this filter is built to last and can handle high flow rates of up to 150 gallons per minute. Remember that Pentair recommends staying within that flow rate for best performance.
The filter has an internal air system that continuously keeps air flowing through it. This system prevents air buildup and filter malfunctioning. Moreover, the 1-1/2 inch drain makes winterization a breeze. The Pentair filter can handle up to 72,000 gallons of water in 8 hours, which is impressive!
So, if you want a low-maintenance, high-performance filter to clean your pool, this one’s a winner. And hey, it’s NSF listed and 100% factory tested – can’t go wrong with that!
Pros:
- Easy installation
- Winterization convenience
- The filter can handle up to 72,000 gallons of water in 8 hours
- NSF-listed and factory-tested
Cons:
- It has a limited flow rate of 150 gallons/minute
- Jacuzzi – JCF425 425 sq. ft. Inground Cartridge Filter
First, the Jacuzzi JCF425 is made in the USA, so you know you’re getting quality equipment. Plus, it has a 2 1/2″ internal plumbing – the biggest in the industry! That means better water flow and fewer restrictions, keeping your pool water crystal clear.
The filter has four top-quality Pleatco Ultra cartridges. These cartridges efficiently trap all the tiny debris particles, leaving you with pristine pool water. More cartridges mean a lesser frequency of maintenance. More pool time, less maintenance time – win-win!
The chemical-resistant fiberglass-reinforced polypropylene tank can handle harsh weather easily while maintaining top-notch performance. Moreover, the filter is extremely versatile. It can work with 2.5″, 2″, or 1.5″ plumbing, making it an excellent fit for different setups.
Maintenance is easy owing to those heavy-duty handles on the top. And the stainless steel oil-filled gauges further enhance the durability of this filter. On top of all this, there is a 2-year warranty to provide you with peace of mind.
So, if you’re looking for a long-lasting, efficient pool filter that’s made to perform, give the Jacuzzi JCF425 a shot. Your pool will thank you for it!
Pros:
- The 2 1/2″ internal plumbing offers better water flow and fewer restrictions.
- Has four top-quality Pleatco Ultra cartridges
- 2-year warranty
Cons:
- Maintenance procedures might become difficult for a single person.
Replacement Pool Filter Cartridges
The best pool cartridge filters work efficiently for 2-3 years, and then you’ll start seeing a decline in their filtering efficiency. This is secondary to constant wear and tear due to water percolating through the cartridges at high pressures. Moreover, dirt and debris accumulate inside the cartridge, decreasing the filtering capacity.
You can take the cartridges out and clean them, but again the recommended methods require washing via a high-pressure nozzle or a chemical bath, two more factors that can damage the cartridges. The ultimate solution is replacing the cartridges.
Best Replacement Pool Filter Cartridges
Here are some of the best replacement pool filter cartridges with great customer reviews:
- Poolpure Pool Filter Cartridge: This is by far the longest-lasting and can function for months if you put in proper care while using it. It has a cleanable and reusable design to wash it after the debris accumulates and reuse it in your pool filter. It is ANSI and NSF certified and can remove molecules as small as 40-50 microns.
- Sunset Pool Filter Cartridge: is a great option for compact pools, spas, and jacuzzis. It has plastic and Dacron fiber cartridges you can easily wash and reuse. However, you’d need to do that twice every month.
- Volca Spares Pool Filter Cartridge: has a finely perforated design compatible with various pool filters. They are comparatively longer: 8 inches in length. This equips the filters with more cleaning power per unit of time. Moreover, the Dacron material is easy to clean. Just take the cartridges out, have a splash of water, and you’re good to go.
- Optimum Pool Filter Cartridge: stands out for its super long length, measuring over 26 inches, and its large 7-inch outer diameter. It’s perfect for bigger pools that get a lot of use. This filter cartridge is made in the U.S. and has high-quality polyresin filtration media to ensure effective cleaning, top-notch performance, and long-lasting use. The support bands around each cartridge element also contribute to its durability. Large size and excellent build quality translate into an extended use period, especially if your pool has light to moderate use and is covered when not used.
