Cloudy above ground pool water almost always traces back to one place: the filter. Sanitizers kill bacteria, but nothing else in the water pulls out leaves, dust, sunscreen, hair, and sand. When the element is too small, too loaded, or frayed at the pleats, the water goes dull within days of every cleaning and the chlorine never quite catches up.
That is why choosing among the best cartridge filters for above ground pools matters more here than in an in-ground setup. Most bundled filters that ship with above ground pools are sized for the display pool, not for real use in a backyard, on city water, or under a tree. We spent weeks reading spec sheets, compatibility lists, and long-term owner reports across the ten systems below, then matched each one to the pool sizes it actually serves well.
This roundup covers cartridge filters from both sides of the divide: complete pump and filter combo systems, and replacement cartridges for the small Type A and Type C housings that most above ground pools ship with. If you are still weighing media types, our sand filter guide for above ground pools covers the backwashing alternative, and the inground cartridge roundup goes deeper on large multi-element housings.
Top 3 Picks for Above Ground Pool Cartridge Filters (October 2026)
Intex Krystal Clear 2500 GPH Filter Pump
- 2500 GPH pump flow
- 1900 GPH in pool
- Type B Dacron cartridge
- For pools up to 15200 gallons
Intex Type A 3-Pack Cartridge
- 13.5 sq ft Dacron per cartridge
- Three per pack
- Fits 500 to 1500 GPH Intex pumps
POOLPURE Type A or C Cartridge
- Trilobal fabric
- 50 micron rating
- NSF/ANSI 50 certified
- Packs from 2 to 12
Two of those three top picks are replacement cartridges rather than full systems, and that reflects how most above ground pools actually get filtered. Owners with a working pump rarely replace it. The element is the part that dies.
Best Cartridge Filters for Above Ground Pools in October
| Product | Specifications | Action |
|---|---|---|
| Intex Krystal Clear 2500 GPH Filter Pump |
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| Intex Type A 3-Pack Cartridge |
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 U.S. Pool Supply Universal Type A C III 4-Pack |
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| POOLPURE Type A or C Cartridge |
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 POOLPURE PXST150 150 Sq Ft Cartridge |
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 Hayward XStream 150 Filter and Pump System |
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 VEVOR 100 Sq Ft Cartridge Filter System |
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 XtremepowerUS 200 Sq Ft Cartridge Filter |
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 Bestway 2500 GPH Cartridge Filter Pump |
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 Rx Clear Radiant PRC90 Filter Housing |
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The two combo systems, the Hayward XStream and the Intex Krystal Clear, are the only picks here that arrive with a pump in the box. Everything else is a cartridge, a housing, or a housing that still needs its own pump.
1. Intex Krystal Clear 2500 GPH Filter Pump – Best Overall Combo System
INTEX Krystal Clear 2,500 GPH Cartridge Filter Pump for Above Ground Pools
2500 GPH pump,1900 GPH in pool
Type B Dacron cartridge
Pools to 15200 gallons
21.6 lb
Pros
- Strongest circulation in the group
- clearer water within days
- Quiet running with a built-in timer
- Type B cartridge and gauge make cleaning simple
Cons
- Weak suction for vacuuming
- Skimmer hose can collapse on older pools
- Cartridge can clog or collapse under heavy debris
This is the system most above ground pool owners end up with, and for a straightforward reason: nearly 10,000 owners have rated it. The 2500 GPH pump rating translates to about 1900 GPH in the pool once the plumbing is accounted for, which is a real step up from the small pumps that ship with display pools.
Owners consistently report the same outcome after a week of running. Water clarity improves visibly, the unit is quiet enough to sit beside the pool, and hook-up is a matter of two hoses and a plug for anyone with the right adapters on hand.
Specification-wise it covers Intex above ground pools up to 15,200 gallons and uses Type B Dacron paper cartridges, part number 29005E, which Intex recommends changing every two weeks. That cartridge is a global commodity, so replacements are cheap and easy to find almost anywhere, including the above ground pool gear guides we keep updated.
The limitations are worth knowing before you buy. Suction is weak, so this is not the pump to attach a vacuum to. On older pools with a specific OEM surface skimmer, the intake hose can collapse and starve the filter of flow, and the built-in GFCI plug will trip if you wire it to an external mechanical timer.
Who This System Fits Best
It suits owners of a mid-to-large frame above ground pool who are replacing a failed stock pump and want filtration and circulation in one purchase. If your pool is 13 to 18 feet across and you have a working filter housing already, this is overkill, and a cartridge swap is the smarter buy.
It also makes sense for anyone moving off sand who wants to stop backwashing. Water clarity improves quickly once the variable-speed circulation gets a full day of run time under load.
Where Owners Report Problems
Cartridge collapse and rapid clogging are the two recurring complaints, both tied to heavy debris loads rather than normal use. A few buyers also reported a faulty motor or timer, and missing parts in the box, so check everything against the included component list of one filter pump, two hoses, and one cartridge before you connect it.
2. Intex Type A 3-Pack Cartridge – Best Rated Replacement
INTEX Type A Pool Filter Cartridge for Above Ground Swimming Pools, 3-Pack
13.5 sq ft Dacron media
Three per pack
Fits 500 to 1500 GPH Intex pumps
4.25 by 8 inch
Pros
- Highest average rating in the group
- Exact fit in Type A housings
- Rinses and reuses easily
- Three-pack keeps a spare on hand
Cons
- Clogs fast under heavy debris load
- Needs rinsing every few days in busy periods
- No applicable manufacturer warranty
A 4.7 average across more than 2,200 ratings makes this the highest-rated product in the roundup, and the reason is simple consistency. Each cartridge carries 13.5 sq ft of Dacron media and drops straight into the Type A housings used across Intex and Krystal Clear pumps from 500 to 1500 GPH, including models 28603EG, 28637EG, 28635EG, and 28671EG.
Owners describe an exact fit with no adaptation, easy hose rinsing, and enough service life to reuse a cartridge between change intervals. Buying the three-pack is the standard move, and experienced owners on Trouble Free Pool repeat the same advice: keep a spare on hand rather than letting a loaded element strand the pump.
One real limitation is service life under load. Cartridges in this class clog quickly when a pool takes heavy use or a lot of debris, and Intex recommends replacing every two weeks regardless of condition. In a busy season, that is a genuine recurring cost even though the price per cartridge is low.
There is no applicable manufacturer warranty on this item, which is normal for a consumable replacement and not a fault signal. Judge it on fit and media area instead.
When This Is the Right Buy
This is the correct purchase for the majority of above ground pool owners who already have a working pump and filter housing. If your tank takes an 8 inch tall, 4.25 inch diameter element with a roughly 2 inch center hole, this fits and you do not need anything else.
It is also the right call for anyone who wants a spare element in the shed before opening season. Two cartridges plus a spare covers a full summer of Intex’s own two-week schedule.
What to Watch For
Watch the rinse interval rather than the calendar. Owners running a heavily used pool report rinsing every couple of days to hold flow, which is the single biggest reason people end up replacing cartridges faster than the two-week guidance suggests.
3. U.S. Pool Supply Universal Type A C III 4-Pack – Best Cross-Platform Replacement
U.S. Pool Supply Universal Replacement Filter Cartridges, Type A or C, 4 Pk
Four universal cartridges
530 to 2000 GPH pumps
8 by 4.25 inch
1.5 lb pack weight
Pros
- One cartridge covers Type A C and III housings
- Hard plastic core resists collapse
- Works across Intex Bestway and Summer Waves
- Easy to install and wash
Cons
- Seat can be slightly loose in some housings
- Not a perfect match for genuine Intex paper filters
If you have ever owned more than one above ground pool over the years, this pack removes the guesswork. A single cartridge covers Type A, Type C, and Type III housings, and the listed compatibility runs through Intex models 28603EG, 28637EG, and 28635EG, Bestway models 58384, 58387, 58388E, and 58390E, and a long list of Summer Waves RX, RP, SFS, and CP series pumps.
The construction detail that matters is the hard plastic inner core. Paper-element cartridges can bow inward under pressure, and a collapsing element both reduces effective area and leaks debris. Owners report this one holds its shape better and keeps collecting dirt well after a rinse.
The media is polyethylene terephthalate fiber rather than Dacron paper, and the recommended change interval is again every two weeks. A four-pack covers a full season on a single pool without a second order, which is why so many owners buy it as an insurance policy for opening day.
The one repeated criticism is fitment. Reviewers note the cartridge seats almost, but not perfectly, like a genuine Intex paper filter. If your housing is noticeably loose around the element, check the center hole size before you commit.
Who It Works For
This is the pick for families who rotate between pools, a rental, or a pool handed down from a previous owner with an unfamiliar brand on the housing. The listed pump range of 530 to 2000 GPH covers the majority of residential above ground setups.
It is also a sensible backup. Keeping one of these on the shelf covers a wide range of housings without you having to identify the OEM part number in advance.
Where It Falls Short
It is not the choice for you if your housing is a large single-element design like the Hayward X-Stream. Those take a 23 inch cartridge with a 4 inch center hole, an entirely different format. And on very lightly used pools, a genuine branded Dacron element may hold its shape slightly better in the long run.
4. POOLPURE Type A or C Cartridge – Best Value With Certified Media
POOLPURE Type A or C/III Pool Filter Replaces Intex 29000E/59900E/#29003E
Trilobal filtration fabric
50 micron rating
8 by 4.2 inch
Replaces Intex 29000E
Pros
- Trilobal fabric triples adsorption surface area
- Dirt-locking structure rinses clean
- Exact Type A and C sizing
- Pack counts from 2 to 12
Cons
- Small 50 sq ft format limits capacity
- Needs two-week changes in heavy season
- Best fit is the Intex Type A and C housings only
This cartridge covers the same Type A and C footprint as the Intex original, and the differences are in the media engineering. POOLPURE uses a trilobal fabric structure that gives roughly three times the adsorption surface area of conventional filter fabric, wrapped in a patented dirt-locking weave designed to release debris during a rinse instead of holding it in the fibers.
That combination is why owners report it rinsing cleaner than paper elements and holding water clarity between changes. The stated filtration layer is 50 micron, rated to remove up to 99 percent of fine particles such as hair, leaves, dust, and sand, and the materials carry NSF/ANSI 50 certification through IAPMO.
Compatibility is broad within its class. It replaces the Intex 29000E, fits pumps using 59900 cartridges, and covers model 28603EG, 28637EG, 28635EG, 28671EG, 58603E, 58604E, and the 56635E through 56638E group, plus Krystal Clear 02 and 12R pumps.
Pack choice is the real differentiator here. Regular versions come in 2, 4, 6, and 12 packs, and an anti-biofilm variant is offered in 4, 6, and 8 packs, which is a targeted answer for algae-prone water and shaded pools.
Why It Outperforms Its Class
The trilobal structure matters most in the first weeks of a cartridge’s life, when a paper element is still shedding loose fibers and losing fine particles. A higher-surface-area weave holds those particles on the outside where a rinse can lift them away, and the dirt-locking pattern is what makes that rinse effective.
For a small Type A housing, this is about as much media performance as the format allows. There is no larger element that will physically fit inside an 8 inch tall, 4.2 inch diameter tank.
Where the Limits Show
Two constraints are worth stating plainly. First, all three of the top cartridges in this roundup share the same small footprint, so they cannot be oversized, and a heavily used pool will simply need more frequent rinsing. Second, 50 micron is a coarser claim than the 10 to 15 micron figures some large housings advertise, though it is still finer than a typical sand filter.
5. POOLPURE PXST150 150 Sq Ft Cartridge – Best for Hayward X-Stream Owners
POOLPURE PXST150 Pool Filter Replaces Hayward X-Stream CC1500 1PACK
150 sq ft filtration area
23.25 in long, 8 15/16 in OD
4 oz polyester fabric
7.54 lb
Pros
- 150 sq ft of media in one element
- Replaces a long list of OEM part numbers
- Thickened fabric and reinforced end caps
- Rinses and reuses between services
Cons
- Only one cartridge per pack
- 23 in length needs real storage space
This is a different class of cartridge entirely, and it is the one to look at if your filter housing is a full-size single-element tank rather than a small above ground canister. The PXST150 measures 23.25 inches long with an 8 15/16 inch outside diameter, a 4 inch top and bottom opening, and carries 150 sq ft of trilobal filtration fabric in a single element.
That area is the whole point. One cartridge the size of a large wastebasket can service a much bigger volume of water than three small Type A elements, and it stays clean longer between services because there is simply more surface for debris to land on.
The compatibility list is the reason owners pick it. It replaces the Hayward X-Stream CC1500 as well as CC-1500-E, CC1500RE, Voyager Swim Pro, and MX-1500RE, and it cross-references Pleatco PXST150, Unicel C-8316, Filbur FC-1286, and part numbers SD-00371, SD-00748, and SD-00737.
Build details are above what a commodity element usually offers: 4 oz thickened polyester fabric, reinforced ABS end caps, and a strengthened integrated core. The stated construction claims a service life more than 30 percent longer than a standard cartridge, and the materials are NSF/ANSI 50 certified.
Who Should Buy This Format
Buy this if you already own a Hayward X-Stream 150 or a similar large single-element housing, or if you are building one and want a replacement supply that costs less than the OEM element. If you are still on a small Type A canister, this will not physically fit and you should skip it.
Owners of large cartridge pools and filter houses rate it highly for the same reason large elements always score well: 150 sq ft holds enough debris to make cleaning a monthly event rather than a weekly one.
What to Plan For
Two practical drawbacks. Only one cartridge comes per pack, so a system that runs multiple elements needs multiple purchases. And a 23 inch element is far less convenient to store than a small Type A cartridge, which matters if you are keeping a spare through the off-season.
6. Hayward XStream 150 Filter and Pump System – Best Full System Upgrade
Hayward Xstream Above Ground 150 Cartridge Pool Filter & Pump System, 1.1HP
1.5 HP PowerFlo Matrix pump
150 sq ft cartridge
75 lb total weight
29.6 by 21.6 by 37.3 in
Pros
- Pump and large cartridge in one purchase
- Monthly cleaning on light use
- No backwashing and no sand to carry
- Easy-Lok ring opens internals in one turn
Cons
- No built-in pump timer
- Easy-Lok lid is very hard to open
- Included hoses are basic
- Heavy at 75 lb
Moving from a sand filter to a system like this is the single biggest quality jump available to an above ground pool owner, and Hayward builds it around a simple idea: pair a 150 sq ft cartridge with a 1.5 HP PowerFlo Matrix pump. At roughly 75 pounds the whole assembly is still light enough to lift and store indoors for winter, unlike a sand tank full of media.
Owners who switch report markedly clearer water, cleaning only about once a month on light use, and real savings on chemicals within two seasons because there is no backwash discharge carrying sanitizer out of the pool. One long-term owner reports a previous identical system lasting 13 years outdoors, which tells you what class of hardware this is.
The engineering details are solid where it counts. The Easy-Lok ring design opens all internal components in a single turn, the filter tank is built for long service, and the system is engineered to work with either flexible or rigid plumbing, which matters because above ground setups vary a lot in how they are plumbed.
The stated horsepower in the listing data is 1.5 hp, and the larger filter size is specifically noted as distributing dirt and debris more evenly through the element rather than choking one section first.
Reasons to Step Up to a Full System
The case for a combo system is strongest when your current setup is failing in three ways at once: the cartridge is undersized, the pump is weak, and you are tired of carrying sand. Buyers who arrive from sand rarely go back, mostly because water clarity improves immediately and there is no media to backwash out of the pool.
It also solves the hose size question in one purchase, since the tank and pump are matched by the manufacturer rather than adapted by you.
Where It Falls Short
Two complaints come up repeatedly. There is no built-in timer, so the pump has to be switched off manually or fitted with an external timer, which is the single most-cited practical complaint in above ground owner threads. And the Easy-Lok lid is genuinely hard to unscrew and reseal, so budget real time at each cleaning rather than expecting a quick twist.
Some owners also report early motor failures, and the included hoses are basic enough that many plumb the system with PVC instead.
7. VEVOR 100 Sq Ft Cartridge Filter System – Best Range of Sizes
VEVOR 2026 Pro Pool Cartridge Filter System 100 Sq.Ft, Pool Filter for Inground & Above Ground Pools, Compatible W/Pumps 1/2HP~1HP | Up to 6142 GPH Max Flow, Pool Filters for Pools Up to 23775 Gallons
100 sq ft element
Up to 6142 GPH
5.2 mm PP and fiberglass shell
Pools to 23775 gallons
Pros
- Wide size range from 50 to 725 sq ft
- Plug-and-play leak-free installation
- Pressure gauge and relief valve included
- Shell resists cracking and UV damage
Cons
- Housing feels lighter than US-built competitors
- Gauges often arrive filled with liquid
- Replacement elements not interchangeable with other brands
The VEVOR line is the reason we included a housing with no pump in a roundup mostly made of cartridges. It is available as a tank and element or as an element alone, in 50, 90, 100, 120, 150, 175, 200, 325, 425, 525, and 725 sq ft sizes, which means you can size to the pool rather than accept whatever the bundle gives you.
This 100 sq ft model carries a maximum flow figure of 6,142 GPH and is rated for above ground and in-ground pools up to 23,775 gallons. Owners replacing an undersized filter or a sand setup report large clarity gains, frequently within hours of first running.
Installation is the strong point. Pre-fitted connectors and a tight seal design mean it fits standard 2 inch plumbing with no extra fittings, and buyers specifically mention thick gaskets and double O-ring unions holding a leak-free seal. The shell is 5.2 mm thick polypropylene with fiberglass, which is what makes it hold up to weather and UV exposure.
It includes a real-time pressure gauge and an automatic relief valve that alerts when pressure exceeds 150kPa, so you can track loading the way you would on a commercial unit. Filtration is stated at 50 microns with a lead-free, BPA-free cartridge.
Where This One Fits
This is the pick for an owner who has outgrown a small canister but does not want a full combo system, and who already has a pump that turns an acceptable flow rate. Because the shell is a standard 2 inch format, it also slots into many existing setups without replumbing.
For anyone with an undersized stock filter, swapping to a properly sized cartridge housing is the single most effective clarity upgrade available short of changing media type entirely.
What Owners Flag as Faults
Two defects recur. Pressure gauges frequently arrive filled with liquid and unreadable, so check yours the day it arrives. And one unit began leaking severely after about three months when the bleeder valve sheared off, which is worth knowing about if you plan to plumb anything behind it.
Buyers also comment that the housing feels lighter than US-built competitors. The replacement elements are not interchangeable with older non-VEVOR filters, so factor in brand lock-in before you commit.
8. XtremepowerUS 200 Sq Ft Cartridge Filter – Best for Large Volumes and Spas
XtremepowerUS Swimming Pool Cartridge Filter, High Flow Filter System for In-Ground & Above Ground Pools & Spas, 2-Inch Ports, Heavy-Duty Pool Water Filtration (200 SF)
200 sq ft element
2 inch ports, 150 gpm flow
Pools to 72000 gallons
30.1 lb, 24 by 24 by 39.5 in
Pros
- 200 sq ft serves very large pools and spas
- Weather and corrosion resistant resin
- Pressure gauge and relief valve included
- Standard 2 inch ports
- Finest filtration claim in the group
Cons
- Lowest average rating in the set at 4.0
- Bulky 24 by 24 by 39.5 inch footprint
- Replacement element sold separately
- Some buyers question build quality for the price
This is a capacity-first filter, and it handles volumes that no other pick here is designed for. The 200 sq ft element is rated for pools up to 72,000 gallons at eight hours of turnover, or 36,000 gallons at four hours, and the manufacturer also lists it for spa, hotel, and home pool installations. For a residential above ground pool, that is far more than you need, which is precisely why it belongs here: it covers the small fraction of readers with a large inflatable pool, a spa attached to one, or a commercial-adjacent installation.
Filtration is the finest claim in the group, capturing particles down to 10 to 15 microns through a precision-engineered extruded core. The 2 inch inlet and outlet connections are standard, and the 150 gpm flow figure is measured at the port.
Construction is double-reinforced resin chosen for weather, UV, and corrosion resistance, and the whole assembly weighs about 30 pounds. Versions are offered in 175, 200, and 425 sq ft, so the same product family covers a mid-size pool or a much larger one.
Monitoring hardware is included: a real-time pressure gauge plus an automatic relief valve that alerts above 150kPa, the same pairing the VEVOR unit uses.
When This Size Is Right
Choose this when the water volume genuinely outpaces a small canister, or when you are filtering a spa or hot tub alongside a pool where a Type A element cannot keep up. Owners of higher-volume installations value the element area and the fact that monitoring hardware is built in.
It is also a reasonable upgrade for anyone who genuinely hates cleaning. More media area means longer intervals, and that is the honest benefit you are buying.
Reasons to Look Elsewhere
It carries the lowest average rating in this roundup at 4.0, with a wide spread, and some buyers feel the build quality does not justify the price. The 24 by 24 by 39.5 inch footprint needs dedicated plumbing space next to the pool, and the replacement element, SKU 75215, is a separate purchase you will need to plan for.
For a typical 13 to 18 foot residential pool, this is a lot of filter for the job.
9. Bestway 2500 GPH Above Ground Cartridge Filter Pump – Best for Programmable Timers
Bestway 2,500 GPH Above Ground Swimming Pool Cartridge Filter Pump
2500 GPH flow
Type IV-B cartridge
300 to 16400 gallon range
23.9 lb
Pros
- 2500 GPH circulates a pool in a few hours
- Programmable timer runs up to 10 hours per cycle
- Adapters for 1.5 and 1.25 inch valves included
- Pressure release valve protects the filter
Cons
- Some pumps lost power within a month
- Type IV-B cartridges are model-specific
- Replacement interval not clearly stated
The Bestway unit competes directly with the Intex Krystal Clear and wins on one specific feature: the energy-saving plug with a programmable timer that runs up to 10 hours per cycle. That is a real advantage in a category where the most common complaint is that a pump has no timer at all, and where the alternative is a mechanical timer you wire in yourself and reset every week.
Flow is rated at 2500 GPH, and owners consistently describe it as a dramatic step up from low-flow factory pumps, reporting visibly better circulation and shorter filter cycles than a sand arrangement. The recommended pool range is 300 to 16,400 gallons, and Bestway states compatibility with almost all above ground pool brands regardless of manufacturer.
Two details make installation painless. Adapters for both 1.5 inch and 1.25 inch threaded valves are included, which covers nearly every above ground skimmer and return fitting in circulation. And a pressure release valve lets air out of the filter, which stops a common startup problem where a sealed filter traps air and starves the pump.
The included media is a Type IV-B cartridge. That matters for future replacement planning, and we will come back to it below.
Best Case Scenario
This is the pick for someone who wants circulation and filtration in one box, runs their pump on a schedule rather than continuously, and does not want to install an external timer. Running eight hours a day instead of twenty-four is where the timer pays for itself over a season.
It is also a good swap for anyone who has had enough of maintaining a sand filter and wants the water savings of cartridge filtration.
Reliability and Media Concerns
The weaker half of the feedback is durability. Some owners reported the pump losing power after about a month and needing constant restarts, and the one-star share reflects similar complaints. If you have had a Bestway pool before, the motor history may be familiar.
The second issue is the Type IV-B cartridge. It is model-specific, so aftermarket options for it are narrower than for Type A or Type C, and the replacement interval is not clearly stated, which catches owners off guard mid-season. Plan a spare element before you open the pool.
10. Rx Clear Radiant PRC90 Filter Housing – Best Vertical Patio Setup
Rx Clear Radiant Cartridge Pool Filter for Above Ground Swimming Pools | PRC90 | Pools up to 15,000 Gallons | Energy Efficient | Corrosion Proof | Filter Cartridge Included
Filter cartridge included
Corrosion-proof polymer housing
22 by 10.5 by 45.5 in
21 lb
Pros
- Cartridge ships in the box
- Corrosion-proof polymer for permanent outdoor use
- Large element needs infrequent cleaning
- Works with above ground pools hot tubs and spas
Cons
- Pump sold separately
- 45.5 inch vertical footprint needs clearance
- Lowest review count in the set at 190
The Rx Clear Radiant is a housing, not a system, and that is its main appeal: it arrives with a filter cartridge already in the box, so you can pair it with the pump you already own and be filtering the same day. Above ground versions are listed for pools up to 15,000 gallons, with separate variants for 25,000 gallon above ground and 35,000 gallon in-ground pools.
Construction is a tough weather-resistant, corrosion-proof polymer, which is the right material for a unit that will sit beside a pool through summers, winters, and UV exposure. At 21 pounds it is light enough to reposition without a second person.
Two owner themes stand out. First, the large filter element needs only occasional rinsing or swapping rather than weekly attention, which is the main reason people recommend it. Second, paired with a capable pump it runs efficiently enough that owners report cutting pump run time while still holding clear water, which is the argument for cartridge filtration in general.
It is also listed for hot tubs and spas, and carries CE certification with two-year spare part availability, which is a reasonable signal for a permanently installed outdoor component.
Where It Fits Well
The vertical footprint is the reason to pick it. At 22 inches deep, 10.5 inches wide, and 45.5 inches tall, it runs up beside a pool rather than out into the yard, which matters on a narrow patio where a horizontal tank would not fit. The slim profile also suits a spa or hot tub setup.
If you are replacing a cracked undersized filter and already have a pump, this is a clean swap with nothing extra to buy.
Limitations to Plan Around
A pump is not included, so budget for that if you are starting from nothing. The 45.5 inch height needs real clearance beside the pool, and the vertical orientation means the cartridge lifts straight up rather than sliding out, which some owners appreciate and others find awkward in a tight space.
It also has the smallest review base here at 190 ratings, so treat the 4.3 average as less statistically meaningful than the thousands of reviews behind the picks at the top of this list.
How to Choose a Cartridge Filter for Your Above Ground Pool
Five decisions stand between you and a filter that works. Work through them in order and the choice usually makes itself.
1. Match Filter Area to Pool Gallons, Then Oversize
Filter area is measured in square feet of pleated media, and it is the number that decides how often you clean. The rule of thumb is roughly 1 sq ft of filter area per 1,000 gallons of pool, and experienced owners consistently advise stepping up from the manufacturer’s figure rather than matching it exactly. A bigger element lasts longer between cleanings, which is the whole point of owning one.
Use these as starting points for a permanent above ground pool:
Under 5,000 gallons: a small Type A or Type C canister, roughly 13.5 sq ft of media
5,000 to 10,000 gallons: 50 to 90 sq ft, or multiple small elements
10,000 to 16,000 gallons: 90 to 150 sq ft, which is where most residential pools land
Over 16,000 gallons: 150 sq ft and up, or a multi-element housing
For a 21 foot round above ground pool, you are in the 12,000 to 13,500 gallon range, which puts a 90 to 150 sq ft element at the right end of the scale. If you run filtration on a timer rather than continuously, oversize by another step.
2. Check Flow Rate and Turnover
Flow rate is stated in gallons per hour, and the figure that matters is what reaches the pool, not what the pump label claims. A pump rated at 2500 GPH typically delivers closer to 1900 GPH at the pool once head loss from hoses and fittings is accounted for. Match that to a turnover target of one full pool volume every eight hours, or four hours if you want faster clarity recovery after heavy use.
Undersizing the pump is the most common reason a cartridge filter underperforms. Water moving too fast through the media bypasses the pleats, and you get clear-looking water with suspended particles you cannot see until the sun hits it.
3. Understand What the Micron Rating Actually Means
Micron ratings across this roundup range from 10 to 15 microns on the 200 sq ft XtremepowerUS element up to 50 microns on the Type A and Type C cartridges. A lower number means finer filtration, but also faster loading, which is a genuine trade-off rather than a free improvement.
For context, sand filters typically capture at 20 to 40 microns and DE filters at 3 to 5 microns. So a 50 micron cartridge still filters finer than a sand filter while using no water for backwashing, which is the actual argument for owning one. If you are weighing the upgrade from a sand setup, our sand filter comparison covers the water-waste side in detail.
4. Decide Between a Cartridge and a Full System
This is the question the shopping results never answer clearly, and it is the one that most affects whether you buy the right thing. There are three distinct purchase categories in this roundup, and mixing them up is the most common expensive mistake.
Replacement cartridges are the small Type A, Type C, and Type III elements that fit an existing working pump and housing. Five of the ten picks here are cartridges. Buy one of these if your pump runs and your water clears within a day of cleaning.
Filter housings without a pump, like the VEVOR and Rx Clear units, are the middle tier. They suit you if your cartridge area is too small but your pump is still strong, and you are comfortable verifying flow rate yourself.
Complete pump and filter systems, like the Intex Krystal Clear, the Bestway, and the Hayward XStream, are for replacements or upgrades where both halves are going. Overpaying for a full system when only the element is needed is the single most common complaint forum owners raise about first-time buyers.
A practical rule: if your pump is more than three seasons old, weighs a lot to lift, or runs loudly, replace the whole system. If it starts cleanly and moves water, spend on media area instead.
5. Prioritize the Valve and the Timer
Owner threads converge on two practical quality signals: the quality of the multiport valve, and whether a timer is built in. On r/AboveGroundPools, a Pennsylvania owner ran entry-level Intex, Bestway, and Funsicle combos against mid-tier Blue Torrent and Aquastrong systems and found the entry-level filters work but feel flimsy, with no timer, while the step-up models have a solid six-way valve and a built-in timer that makes rinse, backwash, and winterizing a single-lever operation.
For cartridge filters specifically, a built-in timer is the deciding feature. Running a pump continuously when six hours a day achieves the same clarity is pure waste, and owners consistently report that an oversized filter plus a timer is the combination that lets them cut run time. Bestway’s programmable plug and the Intex Krystal Clear’s built-in timer are the two in this roundup that ship with one.
Cleaning Routine and Replacement Timing
Cartridge filters are not maintenance-free, but the routine is short. Rinse the element with a garden hose whenever flow drops noticeably, working from the inside out so debris lifts off the pleats instead of driving deeper into the media. Never use a pressure washer, which shreds pleats and ends the cartridge’s life.
Diagnose before you replace. Check the pressure gauge or feel for reduced suction, then look at the element under good light. A healthy pleated cartridge has evenly spaced, firm pleats. Brittle, flattened, or visibly frayed pleats mean the media is at end of life, and no amount of rinsing will fix it. If water clears after a rinse and stays clear, the cartridge only needed cleaning.
For algae in the pleats, a soak beats a scrub. Remove the element, soak it overnight in a diluted muriatic acid solution or a trisodium phosphate solution, then rinse thoroughly before reinstalling. A ten-minute soak will not do what twelve hours does.
As a benchmark, Intex and several other brands recommend replacement every two weeks during peak season, and an average cartridge gets roughly two to three weeks of usable life before it is retired. That is why keeping a spare on hand is such common advice, and why the two- and three-packs in this roundup are worth more than the per-cartridge cost suggests. If you are buying seasonally, our pool heater guide covers keeping a pool workable outside the warmest months.
Frequently Asked Questions
Which brand of pool filters is better, Hayward or Pentair?
Both are in-ground incumbents with deeper parts networks and longer cartridge runs, and for most above ground pools neither has a filter built for the job. Above ground owners more often end up with Rx Clear, Pleatco, Unicel, Waterway, or Blue Wave because those brands make housings sized for frame pools. If your pool is a large inflatable, a Hayward housing is a reasonable choice. If it is a 12 to 18 foot steel frame pool, size the media area before you pick a brand name.
How many years do pool cartridge filters last?
A well-maintained cartridge that is rinsed regularly and never run past end of life typically gives two to three seasons. A cartridge in a heavily used pool, or one that is never rinsed, can be finished in weeks. The honest measure is condition rather than time: firm, evenly spaced pleats mean it still has life, while flattened or frayed pleats mean it is done.
How frequently should I replace my pool filter cartridge?
Manufacturers typically recommend every two weeks during peak season, and that is a reasonable default for a heavily used pool. In practice, replace based on condition: rinse it and if flow stays strong and water stays clear, keep using it. Rinse it every few days in a busy season rather than discarding cartridges on a rigid calendar, and keep a spare element on hand so a failing cartridge never leaves you without filtration.
How do I know if my pool filter cartridge needs to be replaced?
Three signs. First, flow that does not recover after a thorough hose rinse. Second, pleats that look flattened, brittle, or frayed when you hold the element up to light. Third, water that clouds again within a day or two of cleaning even when chemistry is correct. If only the first sign is present, the cartridge is loaded rather than dead and a rinse will fix it. If pleats are visibly damaged, no cleaning will restore it.
What are the best pump and filter systems for above-ground swimming pools?
For a mid-size above ground pool, the Intex Krystal Clear 2500 GPH pump with a Type B cartridge is the most proven combo available, with a large body of owner reports behind it. For the widest scheduled run time, the Bestway 2500 GPH unit has a programmable timer built into its plug. For the largest step up in filtration area, the Hayward XStream pairs a 150 sq ft cartridge with a 1.5 HP pump, though it carries no built-in timer, so budget for an external one.
Final Picks for Above Ground Pool Cartridge Filtration
For most owners, the Intex Krystal Clear 2500 GPH filter pump is the pick that solves the most problems at once, with a built-in timer, a replaceable Type B cartridge available everywhere, and a body of owner reports large enough to trust. If your pump still runs fine, spend nothing extra and buy the Intex Type A three-pack or the POOLPURE Type A or C cartridge, which is our best value and carries certified media. The POOLPURE PXST150 is the answer for anyone with a large single-element housing, and the VEVOR line covers every size in between.
Whichever route you take, size the media area to your gallons first and oversize from there. Updated for 2026, this roundup covers the best cartridge filters for above ground pools across both replacement cartridges and full pump and filter systems, so you can buy the smaller part when the smaller part is the right part.