This complete filter set keeps your Culligan AC-15 reverse osmosis system running at full capacity with three filter cartridges plus a genuine GE Desal 18 GPD membrane. Designed as a direct-fit annual service kit for AC-15 systems, this package handles sediment, chlorine, dissolved solids, and final polishing in one convenient replacement cycle.
SPECIFICATIONS
What's Included in This Filter Set
Sediment Filter
5 Micron
Removes dirt, rust, and particulates
Carbon Block Filter
10 Micron
Chlorine and taste/odor reduction
RO Membrane
18 GPD
GE Desal TFM-18A membrane
Inline Post Filter
K2333-KK
3/8" QC standard (1/4" available)
TECHNICAL DETAILS
Filter Set Specifications
| Membrane Type | GE Desal TFM-18A Thin Film Composite |
| Production Rate | 18 gallons per day at 60 PSI, 77°F |
| Post Filter Connection | 3/8" quick connect (standard for most AC-15 models) |
| Sediment Filtration | 5 micron nominal rating |
| Carbon Block Stage | 10 micron, high-capacity chlorine removal |
| Replacement Interval | Filters annually, membrane every 2-3 years |
| Compatible System | Culligan AC-15 Reverse Osmosis System |
COMPATIBILITY & APPLICATIONS
Fits Culligan AC-15 Systems
This filter set is engineered specifically for the Culligan AC-15 reverse osmosis system. The package includes all consumable filtration components needed for a complete annual service cycle. Most AC-15 models use the 3/8" quick connect post filter included here, but a small number of early AC-15 units require a 1/4" quick connect inline filter instead. If you're unsure which connection size your system uses, contact us before ordering to confirm the correct post filter configuration for your specific AC-15 model.
💧 Pro Tip: Change your sediment and carbon filters annually and inspect the RO membrane every two years. If you notice a significant drop in water production or TDS creep, replace the membrane even if it hasn't reached the typical 2-3 year lifespan. Water quality varies by region, and high-sediment or hard water areas may require more frequent membrane replacement.
