Cartridge, sand, and DE filters all do the same basic job — catching debris and fine particles as water circulates — but they differ in how finely they filter, how much maintenance they need, and what they cost over time. Here is how to choose the right one.
Cartridge Filters
Cartridge filters use pleated fabric elements that trap debris as water passes through. They have become the most common choice for new residential pools.
Pros
- Good filtration quality
- Lower water usage since cleaning does not require backwashing
- Simple maintenance — remove, rinse, and reinstall
Cons
- Cartridges need periodic replacement
- Less fine filtration than DE
Sand Filters
Sand filters push water through a bed of specialized filter sand, trapping debris as it passes through the media.
Pros
- Lower maintenance — backwashing is quick and simple
- Filter media typically lasts several years before needing replacement
- Lower cost to maintain over time
Cons
- Least fine filtration of the three options
- Backwashing uses more water
DE (Diatomaceous Earth) Filters
DE filters use a fine powder coating on internal grids to achieve the finest level of filtration available for residential pools.
Pros
- The finest filtration of the three types, trapping very small particles
- Produces the clearest water
Cons
- Most maintenance-intensive option
- Requires periodic recharging with DE powder
- Grids and manifolds need careful attention over time
Which One Makes Sense for Your Pool
Cartridge filters are a solid all-around choice for most homeowners who want good filtration with manageable maintenance. Sand filters suit homeowners who want the lowest-maintenance option and are not as concerned with the very finest filtration. DE filters make sense for pool owners who prioritize water clarity above all else and do not mind the extra maintenance involved.
When to Call a Professional
Supreme Pool Services handles pool filter cleaning and replacement for all three filter types. If your water has been looking cloudy and you are not sure whether the filter is the cause, see our guide on cloudy pool water causes and fixes.
What It Costs
Routine filter cleaning generally runs $80–$150. Replacement costs vary by type: cartridge filter replacement typically runs $200–$500, sand filter media replacement runs $300–$600, and DE grid replacement runs $400–$700. See our pool service cost guide for Palm Beach County for pricing on our other services.
Common Questions
Which filter type is best for water clarity?
DE filters produce the clearest water because they filter the finest particles, though cartridge filters are a close and lower-maintenance second choice.
How often do filters need to be cleaned?
It depends on the filter type, pool use, and debris load, but rising pressure readings and reduced circulation are reliable signs it is time.
Can I switch from one filter type to another?
Yes, in most cases, though it typically requires replacing the filter tank itself rather than just the internal media or cartridges.
Get Started
If you are not sure which filter type is right for your pool, or your current filter needs service, Supreme Pool Services can help. We serve The Acreage and the surrounding Palm Beach County area. Call (561) 312-0970 or email supremepoolsandspa@gmail.com to request a free estimate.
