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Home > Water Filter Brands > Culligan Water Filters > Culligan Reverse Osmosis Systems > LC-50


Culligan LC-50 and Culligan AC50 Aqua Cleer Reverse Osmosis System Compatible Filters

4-Stage RO System - Replacement Filters Available HERE

Culligan AC-50 Aqua Cleer RO System and Culligan LC-50 AquaCleer Good Water Machine Reverse Osmosis System Filters Compatible
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Product Code: LC-50
System Not For Sale.
Replacement Filters Available HERE
  • Culligan LC-50 Aqua Cleer Reverse Osmosis System Compatible Filters:
  • The Culligan LC-50 Aqua Clear Good Water Machine Reverse Osmosis System contains three replacement filters and one membrane. Click on the filter name below to learn more about each filter.
  • The Culligan LC-50 Aqua Clear reverse osmosis system first stage starts on the left in the picture on the left.
  • The Culligan Good Water Machine AC-50 has a sediment stage, pre-carbon stage, membrane stage, and post filter carbon stage.
  • Reverse Osmosis water is ideal for coffee, tea, soup, juice, recipes, baby formula, houseplants, pets, pasta, ice cubes, steam irons, drink mixes, and everything you make with water.
  • Culligan LC-50 Aqua Cleer Compatible Part Numbers:
  • Stage 1 RS-23-SED5: Culligan Compatible 01-4015-38, 00-0001-20, 4412-75, 4496-27, S7011C, 4485-44, 4496-27
  • Stage 2 PRE-RO: Culligan Compatible 01-0125-80, 00-0011-38, 01-0042-91, 01-0000-78, 4027-96, 4487-63, 4496-28, 4487-62
  • Stage 3 TFM-50-A: Culligan Compatible 00-4015-33, 01-0060-98, 4015-33
  • Stage 4: K2333-KK 3/8" Quick Connect Fittings Culligan Compatible 01-0042-91 - OR - K2333-JJ 1/4" Quick Connect Fittings Culligan Compatible 01-0000-79
    Note: Most LC-50 models use the 3/8" Inlet/Outlet post filter. A few LC-50 models use the 1/4" Inlet/Outlet post filter.
We distribute compatible filters for the Culligan LC-50 / AC-50 Aqua Cleer Reverse Osmosis System.

Stage 1: RS-23-SED5
Stage 2: PRE-RO
Stage 3: TFM-50-A
Stage 4: K2333-KK 3/8" Quick Connect Fittings - OR - K2333-JJ 1/4" Quick Connect Fittings
Note: Most LC-50 models use the 3/8" Inlet/Outlet post filter. A few LC-50 models use the 1/4" Inlet/Outlet post filter.

See the Replacements tab above for more information on each stage and the compatible filters for each stage.

These compatible replacement filters can be purchased below.
  • Manufacturer: Culligan LC-50
  • Culligan LC50 AquaCleer Reverse Osmosis System Stages:
  • Stage 1: The Culligan Compatible RS-23-SED5 Sediment Pre-Filter is a 5 micron sediment filter used in the first stage. It screens out dirt, sediment, sand, rust and other physical particles. The Stage 1 filter should be changed every 3 - 6 months depending on the level of sediment in your water. Culligan Compatible 01-4015-38, 00-0001-20, 4412-75, 4496-27, S7011C, 4485-44, 4496-27.

  • Stage 2: The PRE-RO Carbon Block Water Filter is used in the second stage. It reduces chlorine taste and odor that may be in your water supply. The Stage 2 filter should be changed every 6-12 months. Culligan Compatible 01-0125-80, 00-0011-38, 01-0042-91, 01-0000-78, 4027-96, 4487-63, 4496-28, 4487-62.

  • Stage 3: The TFM-50-A RO Membrane goes in the third stage. It is a 50 GPD membrane. The Stage 3 RO membrane should be changed every 2 years. Culligan Compatible 00-4015-33, 01-0060-98, 4015-33.

  • Stage 4: The K2333-KK 3/8" Inlet/Outlet post filter is the 4th stage. The polishing filter reduces chlorine taste and odor that may be in your water supply. The Stage 4 filter should be changed every 6-12 months. Culligan Compatible 01-0042-91.
    Note: A few LC-50 models have a 1/4" Inlet/Outlet for the post filter. For 1/4" Inlet/Outlets, order the K2333-JJ Post-Carbon Filter (Culligan Compatible 01-0000-79).
  • Culligan AC-50 Aqua Cleer Reverse Osmosis System Water Filter Change Intervals:
  • The filter change interval will vary due to your water quality and the amount of water used.
  • Culligan LC-50 Aqua Clear RO System Parts & Accessories:
  • Culligan LC-50 O-Ring: OR-ACH. The o-rings should be replaced every filter change.
  • Culligan Aqua Cleer O-Ring Lubricant: OR-LUBRICANT-LG. O-Rings should be greased on every filter change with food-grade o-ring lubricant.
  • Culligan LC-50 RO Tank: RO-T25-P. Replace tank when needed.
  • Culligan LC-50 Aqua Cleer RO Tank Pressure Gauge: TPG-100. Monitor tank pressure to keep reverse osmosis system running optimally.


Disclaimer: Culligan International Company is the registered owner of the trademark Culligan. This replacement product is not manufactured, endorsed, or approved by the Culligan International Company. Part numbers and photographs of products and systems are used for identification purposes only and do not demonstrate an association with the Culligan International Company. This site makes no representation as to the effect the use of this replacement product may have on any warranty that you received with the purchase of a Culligan system.
  • Culligan LC-50 Aqua Cleer Reverse Osmosis Replacement Filter Instructions:
  • NOTE: You may want to fill a pitcher with drinking water before beginning service as it will take several hours for the system to refill after servicing.
  • NOTE: Cleanliness is essential in the filter replacement procedure. Be sure to wash your hands thoroughly before handling filters. The use of protective gloves is strongly recommended.
  • NOTE: It is important to flush the cartridges before use.
    - A minimum of 5 gallons should be flushed through the Carbon Cartridge (Stage 2) to remove carbon dust.
    - The RO Membrane Filter (Stage 3) should be flushed for a minimum of 6 hours to remove preservative solution.
    - A minimum of 2 gallons should be flushed through the Polishing Filter to remove carbon dust.

  • RECOMMENDED MATERIALS:
    Household (5.25%) bleach mixed with water - hydrogen peroxide is not recommended
    Clean 1-gallon plastic container with cap
    100-ml graduated cylinder
    Plastic pan to hold manifold assembly
    Tubing connector, 3/8” tube x 3/8” tube
    Flat-blade and #2 Phillips screwdrivers
    Paper towels
    Disposable plastic gloves (like those used in the food service industry)

  • PREPARATION:
    1. Locate the system’s supply valve and turn off the system’s water supply.
    2. Using the graduated cylinder, add 5 ml (about 1 teaspoon) of bleach to the 1-gallon container. Open the dispenser faucet and fill with one gallon of product water. If there is not enough RO water, fill the container the rest of the way with soft water. Cap the container and shake to mix.
    NOTICE: If any RO water remains after filling the container, you may want to fill a pitcher with the drinking water as it will take several hours for the system to refill after servicing. In any case, leave the faucet on until the storage tank is empty and then, shut off the faucet.
    3. Remove the polishing filter (stage 4 inline filter that is inserted into the tubing after the filter assembly) and discard. Remove the inline filter by pushing in the collet and firmly but gently pulling out the tubing. Connect the tubing ends together temporarily with the tubing connector.
    4. Lift the filter assembly from the mounting bracket and place it in the plastic pan to catch any dripping water.
    5. Using the flat-blade screwdriver, pull the u-clips from all three housings. Insert the u-clip into the two square holes at the bottom rear of the manifold and push up to release the filter housings. Remove the housings with a downward twisting pull.
    6. Remove the particle filter (stage 1) cartridge and the activated carbon cartridge (stage 2) and discard. If the RO membrane filter (stage 3) will be reused, clean the outside with a wet paper towel and place the membrane filter in a clean, unused plastic bag.
    7. Wet some paper towels with the diluted bleach solution. Clean the inside of the housings and the underside of the manifold with the paper towels.

  • SANITIZING THE STORAGE TANK AND FAUCET:
    1. Add 15 ml (about one tablespoon) of bleach to the particle filter housing (stage 1). Replace all three housings on the manifold and insert the u-clips.
    2. Turn on the supply valve and fill the storage tank with 1 to 2 gallons of water.
    NOTICE: The weight of the storage tank will increase by 8 to 16 pounds. Turn off the water supply valve.
    3. Wait ten minutes before opening the faucet and draining the storage tank. Do not rinse any remaining solution from the tank.
    NOTICE: During this time, proceed to the “Sanitizing the Manifold Assembly” section. Wait to do step 4 until indicated.
    4. Remove the temporary tubing connector and replace it with a new polishing filter. Make sure the flow arrow on the polishing filter points to the faucet. The new polishing filter (stage 4) can be installed by pushing the ends of the tubing into both sides. If present, remove the dust caps from the quick connect fittings at each end of the filter prior to installation. These dust caps are to protect the filter in transit and will prevent water flow through the filter if not removed prior to installation. Remove the dust caps by pushing in the collet and firmly but gently pulling out the dust cap.

  • SANITIZING THE MANIFOLD ASSEMBLY:
    1. Using the flat-blade screwdriver, pull the u-clips from all three housings. Insert the u-clip into the two square holes at the bottom rear of the manifold and push up to release the filter housings. Remove the housings with a downward twisting pull. Discard any solution remaining in the housings.
    2. Open the particle filter cartridge bag half way, being careful not to touch the filter element. Lubricate the particle filter cartridge o-rings with o-ring lubricant and insert the cartridge into position #1 in the manifold.
    3. Fill housing #1 about 2/3 full of the diluted bleach solution from the 1-gallon container. Assemble the housing to the manifold and replace the u-clip.
    4. Repeat steps 2 and 3 for housing #2 (activated carbon cartridge) and housing #3 (RO membrane filter).
    NOTICE: For RO membrane filters that have a single open-end, pour diluted bleach solution into the center tube.
    CAUTION: The solution should remain in contact with the RO membrane filter for at least five (5) but no longer than ten (10) minutes. Longer contact time will shorten the life of the membrane.
    NOTICE: While waiting for the filters to be sanitized, complete step 4 of the “Sanitizing the Storage Tank and Faucet” section.
    5. Discard the first glassful of water from the system to flush out any residual chlorine that might remain in the polishing filter tubing and faucet. The polishing filter will remove any chlorine remaining in the storage tank.
    6. Record your service date.