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Microline under-sink reverse osmosis system with three filter housings, tank and faucet

Reverse osmosis system

Microline TFC-25S 3-Stage RO Replacement Filters

This 3 stage RO system uses a carbon block pre-filter to reduce sediment, chlorine and chlorine by-products before the membrane filters out impurities larger than .001 microns. The GAC post filter treats for taste and odor. You can find and order all your filters at once in our replacement kits below.

See the replacement schedule

Compatible parts

Everything that fits the Microline TFC-25S

Microline S7028 5-micron sediment and carbon block replacement filter, 2 x 11.5 inch
Microline
Microline S7028 Sediment/Carbon Prefilter
(16)
$20.99
Reduces chlorine, taste and odor
Microline S1227RS 25 GPD thin-film composite reverse osmosis membrane
Microline
Microline S1227RS TFC Reverse Osmosis Membrane, 25 GPD
(4)
$59.00
Thin Film Membrane
Microline S7025 GAC carbon post-filter, 2 x 12 inch, for compatible reverse osmosis systems
Microline
Microline S7025 GAC Carbon Post-Filter, 2 x 12 in
(21)
$18.99
Reduces chlorine, taste and odor
Microline TFC-25S replacement filter set shown without reverse osmosis membrane
Microline
Microline TFC-25S Replacement Filter Kit with RO Membrane
(8)
$98.98
Microline TFC-25S compatible reverse osmosis replacement filter kit without membrane
Microline
Microline TFC-25S RO Replacement Filter Kit - No Membrane
(0)
$39.98
42561 one-gram silicone lubricant pouch for installing O-rings, gaskets and seals
ESP Water
Silicone Lubricant 42561 1 Gram Pouch for O-Rings
(11)
$2.99
Microline S3072 filter housing wrench for compatible reverse osmosis filter housings
Microline
Microline S3072 Filter Housing Wrench
(1)
$7.99
Microline S3069 replacement O-ring for 2-3/4-inch white filter housings
Microline
Microline S3069 O-Ring for White Filter Housing, 2-3/4 in
(2)
$1.99
Sani-System SS25RO single-packet cleaner for reverse osmosis system maintenance
Sani-System
Sani-System SS25RO Reverse Osmosis System Sanitizer, 1 Pack
(34)
$4.99

Replacement filter info

Your replacement schedule

Each stage of the Microline TFC-25S, the exact part that fits it, and when to change it.

  1. Stage 1: Sediment filter

    Part S7028, Microline S7028 Sediment/Carbon Prefilter $20.99

    Every 6–12 months

  2. Stage 2: RO membrane

    Part S1227RS, Microline S1227RS TFC Reverse Osmosis Membrane, 25 GPD $59.00

    Every 2 years

  3. Stage 3: Carbon filter (GAC)

    Part S7025, Microline S7025 GAC Carbon Post-Filter, 2 x 12 in $18.99

    Every 6–12 months

  4. Kit: Filter kit, all stages

    Part YSM-MIC25S, Microline TFC-25S Replacement Filter Kit with RO Membrane $98.98

    Every filter and the membrane in one box

  5. Kit: Filter kit, without membrane

    Part YS-MIC25S, Microline TFC-25S RO Replacement Filter Kit - No Membrane $39.98

    Every filter except the membrane

Manuals & instructions

Manuals and guides

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