• Combination of KDF85 and KDF55 with earth-friendly catalytic carbon filter reduces up to 99% chlorine, sediment, rust, silt, volatile organic compounds (VOCs), mercury, lead and PCBs (organic chlorine)

    • Ensures your Evolution-RO runs more efficiently
    • Extends Evolution-RO Pre-filter life (without PreEvolution: 2,000 gallons, with PreEvolution: 7,500 gallons)
    • Filter life: 7,500 gallons
    • Pleated, cleanable sediment filter
    • Heavy duty wall-mountable metal bracket
    • Recommended when producing more than 300 gallons of purified water per week
  • Unit

    • Replace housings every 3 years
    • Dimensions (H x W x D): 18.5" x 17" x 9"
    • Weight: 23 lbs
    • Tariff: 8421210000

    Filters & Replacement Schedules

    KDF85/55 Granulated Catalytic Carbon Filter
    • Replace after 7,500 gal (Schedules for Reverse Osmosis carbon filters based on product water)
    Sediment Filter
    • Clean regularly & change annually
  • PreEvolution Downloads


    HydroLogic Blog Articles

Part Number: HL 31027
MSRP: $ 329.95
UPC: 812111011574

When do I change the filter?

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The PreEvolution™ comes with the following parts