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Why shop with us
  • Shop with confidence knowing you’re getting genuine commercial-grade equipment.
  • Save more with our unbeatable prices and exclusive deals.
  • Rely on experts for fast, friendly support; experts in front of house, back of house and everything in between.
Additional Question? Ask an Expert

Everpure CTOS-10 FX Replacement Cartridge CTOS-10 (1) Cartridge

Everpure  |  MFG #: CTOS-10  |  Item #: 504922
Item: #504922
50+ bought in past months

Technical details
Manufacturer Everpure
Model Number CTOS-10
Manufacturer Part # CTOS-10
Filter Type Particulates, Chlorine, Taste & Odor,
Service Flow Rate 1.50 - 1.99 GPM
Micron Rating .5 Microns
Height 9.8"
Depth 2.8"
NSF Yes

About this item

Product Details

Support better-tasting beverages and help protect equipment from scale.

The Pentair Everpure CTOS-10 replacement cartridge combines sediment and chlorine taste and odor reduction with IsoNet scale-inhibiting technology. Designed for compatible drop-in filtration systems serving ice machines, coffee brewers, and steam equipment, it renews the treatment media while allowing the existing filter housing to remain in service.

This is a replacement for an established filtration setup. Before ordering, match the cartridge to the installed system and the treatment your equipment requires. A similar name or apparent size doesn’t establish compatibility.

Treat taste concerns and equipment deposits differently

Activated carbon reduces chlorine taste and odor that can affect the water used for beverages and ice. Gradient-density depth filtration captures dirt, rust, and sediment, helping protect downstream valves and fittings against particle-related wear and plugging.

IsoNet addresses a separate concern by helping inhibit scale accumulation and corrosion. These functions serve different purposes, so retaining the specified treatment matters when replacing a cartridge. Review your water conditions alongside the connected equipment’s requirements rather than substituting another carbon filter solely because it fits the housing.

Distinguish similar cartridge names before ordering

Differences between CTOS-10, CTO-10, and CTOS-Q10 replacement cartridges
Cartridge Key distinction
CTOS-10 Drop-in carbon filtration with sediment reduction and IsoNet scale inhibition.
CTO-10 Drop-in carbon filtration for sediment and chlorine taste and odor reduction, without IsoNet.
CTOS-Q10 Qwik-Twist cartridge with IsoNet; requires its specified compatible head.

Renew the cartridge and retain the housing

The drop-in format allows the replaceable element to be exchanged while the system’s filter sump remains in use.

Prepare for service by identifying the installed system, recording the cartridge model, and keeping the system instructions accessible. Follow the prescribed housing-care and flushing procedures before returning equipment to service. A clearly labeled spare saves a last-minute search when service is due.

Consult Pentair’s CTOS-10 cartridge sheet for model-specific replacement guidance.

CTOS-10 replacement cartridge FAQs

Which systems use the CTOS-10 cartridge? Pentair lists FXI-11 and FXI-21 systems in the cartridge’s documentation. Confirm the complete installed system model and its specified cartridge arrangement before ordering, particularly when servicing a system with multiple filter housings.
Does this replacement include a complete water filtration system? No. This listing supplies one replacement cartridge for use inside a compatible existing filter housing. The head, sump, mounting components, and plumbing assembly aren’t included.
Does IsoNet soften hard water? No. IsoNet helps inhibit scale formation and corrosion; it doesn’t remove calcium and magnesium through ion-exchange softening. If your equipment requires hardness reduction, evaluate additional treatment against its water requirements.
What is the CTOS-10 replacement part number? Pentair identifies 252-00310 as the single-cartridge pack and 252-20210 as the six-cartridge pack. This page lists one cartridge. Confirm the pack quantity as well as the model when comparing offers or replenishing maintenance stock.
How often should this cartridge be replaced? Pentair’s current cartridge sheet recommends replacement every 12 months, or sooner when rated capacity is reached or water pressure or flow to the equipment becomes inadequate. Follow the instructions supplied with your system and flush the replacement cartridge as directed.

Order the Everpure CTOS-10 to renew sediment and chlorine taste and odor reduction with IsoNet scale inhibition in a compatible system. Call 1-877-900-4423 for help confirming the replacement, or browse our Everpure replacement cartridges.

Certifications

NSF Listed logo

NSF Listed

The item meets the standards imposed by NSF International. These standards relate to health, public safety and the environment.

Certifications

Customer reviews

Everpure CTOS-10 FX Replacement Cartridge CTOS-10 (1) Cartridge
Everpure

Everpure CTOS-10 FX Replacement Cartridge CTOS-10 (1) Cartridge

$42.37 $75.57

Support better-tasting beverages and help protect equipment from scale.

The Pentair Everpure CTOS-10 replacement cartridge combines sediment and chlorine taste and odor reduction with IsoNet scale-inhibiting technology. Designed for compatible drop-in filtration systems serving ice machines, coffee brewers, and steam equipment, it renews the treatment media while allowing the existing filter housing to remain in service.

This is a replacement for an established filtration setup. Before ordering, match the cartridge to the installed system and the treatment your equipment requires. A similar name or apparent size doesn’t establish compatibility.

Treat taste concerns and equipment deposits differently

Activated carbon reduces chlorine taste and odor that can affect the water used for beverages and ice. Gradient-density depth filtration captures dirt, rust, and sediment, helping protect downstream valves and fittings against particle-related wear and plugging.

IsoNet addresses a separate concern by helping inhibit scale accumulation and corrosion. These functions serve different purposes, so retaining the specified treatment matters when replacing a cartridge. Review your water conditions alongside the connected equipment’s requirements rather than substituting another carbon filter solely because it fits the housing.

Distinguish similar cartridge names before ordering

Differences between CTOS-10, CTO-10, and CTOS-Q10 replacement cartridges
Cartridge Key distinction
CTOS-10 Drop-in carbon filtration with sediment reduction and IsoNet scale inhibition.
CTO-10 Drop-in carbon filtration for sediment and chlorine taste and odor reduction, without IsoNet.
CTOS-Q10 Qwik-Twist cartridge with IsoNet; requires its specified compatible head.

Renew the cartridge and retain the housing

The drop-in format allows the replaceable element to be exchanged while the system’s filter sump remains in use.

Prepare for service by identifying the installed system, recording the cartridge model, and keeping the system instructions accessible. Follow the prescribed housing-care and flushing procedures before returning equipment to service. A clearly labeled spare saves a last-minute search when service is due.

Consult Pentair’s CTOS-10 cartridge sheet for model-specific replacement guidance.

CTOS-10 replacement cartridge FAQs

Which systems use the CTOS-10 cartridge? Pentair lists FXI-11 and FXI-21 systems in the cartridge’s documentation. Confirm the complete installed system model and its specified cartridge arrangement before ordering, particularly when servicing a system with multiple filter housings.
Does this replacement include a complete water filtration system? No. This listing supplies one replacement cartridge for use inside a compatible existing filter housing. The head, sump, mounting components, and plumbing assembly aren’t included.
Does IsoNet soften hard water? No. IsoNet helps inhibit scale formation and corrosion; it doesn’t remove calcium and magnesium through ion-exchange softening. If your equipment requires hardness reduction, evaluate additional treatment against its water requirements.
What is the CTOS-10 replacement part number? Pentair identifies 252-00310 as the single-cartridge pack and 252-20210 as the six-cartridge pack. This page lists one cartridge. Confirm the pack quantity as well as the model when comparing offers or replenishing maintenance stock.
How often should this cartridge be replaced? Pentair’s current cartridge sheet recommends replacement every 12 months, or sooner when rated capacity is reached or water pressure or flow to the equipment becomes inadequate. Follow the instructions supplied with your system and flush the replacement cartridge as directed.

Order the Everpure CTOS-10 to renew sediment and chlorine taste and odor reduction with IsoNet scale inhibition in a compatible system. Call 1-877-900-4423 for help confirming the replacement, or browse our Everpure replacement cartridges.