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  • How To Change Filter On Water Purifier

    August 04, 2021 8 min read

    How To Change Filter On Water Purifier

    00A water filter can give you good-tasting, nutritious water. If you’re lucky enough to have one, you’ll need to know how to alter it at some point. That’s why it’s important to understand how to change filter on water purifier.

    Changing your filter keeps your water odor- and contaminant-free, which is especially important if your water supply was previously untreated. Water purification systems include Reverse Osmosis, UV Treatment, and Deionization.

    Let’s look at the most common water purification systems and the methods involved in replacing them.

    Types of Filters Used in Water Purifiers

    A water purifier’s most significant component is its water filter. Filters such as sediment and carbon play a vital role in eliminating various contaminants from water. The filters on most water purifiers on the market need replacement every 6-8 months. However, the frequency with which you change the filters depends on the quality of the water you receive and how much water you use. At different stages, both of these filters remove different types of pollutants from water.

    Carbon Filter

    At times, the water we receive has a bad odor, rendering it unfit for human consumption. Additionally, the water supply authorities add chlorine to the water to disinfect it before delivering it to your home. When water uses chlorine to purify, it can leave a nasty odor in the water. Carbon filters are essential for eliminating chlorine and other hazardous pollutants from water. The filter also filters out all kinds of unpleasant odors from the water. That’s why it’s important to replace the carbon filter at least once a year.

    Sediment Filter

    Sediment filters aid in the removal of dirt and particles from water. Furthermore, the filter is critical for preserving and safeguarding the RO membranes from contaminants. When you don’t change the filter regularly, dirt from the raw water gets into the membrane and contaminates the water you drink. It can result in a variety of disorders.

    How To Change Filter On Water Purifier

    How To Replace Filters in Reverse Osmosis Systems


    1. Make sure you’re replacing the right filter cartridges. By selecting the exact brand and type of your RO system, you can locate the right filters for your system. If your RO system’s brand or model isn’t listed, or you can’t figure out what it is, use these steps to figure it out or contact ESP Water Products Customer Support.
    2. It would help keep the filter cartridges in their original packing until the reverse osmosis system is ready to use.
    3. Before completing any service work, the replacement service person should wash their hands with soap and water to avoid introducing bacteria into the system.
    4. An RO System Service Kit can make filter replacement easier and maintain your system running at its best.

    How To Change Filter On Water Purifier Process:

    Please follow the following steps for the proper replacement of standard reverse osmosis water filters.

    1. Turn off the reverse osmosis system’s feed water supply line valve.
    2. Next, turn off the reverse osmosis storage tank’s ball valve. Turn the blue ball valve on top of the tank a quarter turn clockwise to do this.
    3. If your RO system has a line to your refrigerator or ice maker, turn off the ball valve on the pipe to your ice maker.
    4. Let the pressure in the system flow off by opening the RO faucet.
    5. During the filter replacement process, arrange a shallow pan under the filter housing to catch any spilled water.
    6. Remove the used filter cartridge by unscrewing the vertical filter housings from the cap. If you’re having difficulties removing the filter housing, you might require a filter housing wrench.
    7. Remove the O-rings with care and set them aside on a clean surface. Clean the O-rings using a clean andgentle towel Carefully inspect for any scrapes, nicks, or abrasions that could cause it to not seat properly in the filter housing. Replace any O-rings that look to be damaged.
    8. Clean the disconnected filter housings with warm water and a small bit of liquid soap. Before replacing the filter and reattaching it, ensure that you’ve fully rinsed all soap out of the filter housing.
    9. Use a silicone lubricant to grease the O-ring lightly. In the filter-housing groove, place the O-ring. The O-ring must be appropriately positioned in the track to produce a watertight seal in between filter housing and cap.
    10. Please make sure the new filter is the correct length by measuring it. Taking the new filter out of the plastic or paper package is a good idea.


    11. Carefully screw the filter housing back onto the cap of the filter housing with hand tightening only.

    12. Suppose your system includes an inline post-carbon filter or a reverse osmosis membrane. If you’re merely changing normal vertical filters, keep following the instructions below to finish the job.

    13. Turn on the incoming water supply valve and check for leaks in the system.

    14. Open the reverse osmosis faucet and turn it on. It would help if you got a little continuous stream of water or a very quick drip within a few minutes, indicating that your new filters are working properly.

    15. While the storage tank valve is still closed, let several gallons run through the RO system and out the RO faucet.

    16. Close the tap and turn the blue ball valve 14 times counter-clockwise until the blue handle is parallel to the storage tank tubing. It will open the storage tank ball valve.

    17. If the storage tank is empty, filling it may take many hours. While the tank is full, you may hear water running.

    18. After the tank is full, open the refrigerator or ice maker line, if appropriate.

    19. Your system is now operational.

    Please follow the following steps for the proper replacement of Membrane reverse osmosis water filters.
    1. If you haven’t previously, go through steps 1 through 5 above.
    2. Push down on the little ring where the tubing connects to the cap to disconnect the tubing from the membrane housing cap (usually on the right-hand side of the housing). Pull the tubing out while pressing and holding the ring down.
    3. Remove the RO membrane by unscrewing the membrane housing cap from the membrane housing. It’s common for the membrane to have been there for 1-3 years and be tough to remove. You may need needle-nose pliers to remove it.
    4. To clean the membrane housing, detach the two tubes on the opposite side of the cap. Each tube should be labeled so that you can rejoin it to its proper location later. The membrane housing is normally held in place by two clips. Disconnect the membrane housing from the clamps and clean the inside of the membrane housing with warm soapy water. Properly rinse any remaining soap.
    5. Install the replacement membrane first, with the o-ring end facing the open cap. The big outer rubber stopper nearest to it. Insert the membrane until the o-rings are securely seated in the membrane housing. To center the membrane and ensure it’s well installed, you may need to move it in a tiny circular motion. Apply some tremendous pressure. If you don’t properly place the membrane, untreated water may flow freely through the system.
    6. Replace the membrane housing cap and tighten it. Reattach the removed tubing to the fittings. To ensure that tubing is correctly secured, insert it as far as possible into the appropriate fitting, then pull lightly on it to lock it in place.

    How To Change Filter On Water Purifier: Bladder Tank Repressurize


    1. Drain the water from that tank using the specialized RO faucet at your sink. Also, turn off the water feed.
    2. Test the pressure from the little pin valve at the bottom of the tank with a fine pressure gauge. The pressure should be between 10 and 12 pounds per square inch.
    3. If the pressure is less than ten psi, disconnect the tank and close the top-of-the-tank valve.
    4. Attach a small compressor or bicycle tire pump to the pin valve of the tank and carefully re-pressurize. Test it every 15 seconds to ensure you don’t put too much air in since the bladder inside may explode.
    5. Replace the little black cover over the pin valve, disconnect your tank, and open the valve on the top of the tank once you’ve attained the desired pressure.
    6. Filling your tank with water will take roughly 2 hours. To clean the filters, drain the first tank completely. You’ll be able to drink from your second tank full.
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    How To Change Filter On Water Purifier: FREQUENTLY ASKED QUESTIONS (FAQ)

    Who Should Do the Replacing?

    Although many filters appear to be the same, their sizes and construction can differ significantly from one unit to the next. Perhaps it’s because the filters are from different companies and serve distinct purposes. It could also be that some filters have been upgraded and are more in line with current standards.

    Whatever the case may be, selecting the appropriate size and kind of filter is critical because even the tiniest variation can render the entire system ineffective. A slightly smaller filter, for example, will allow pollutants to pass through the filter (instead of through it). As a result, pollutants will continue to contaminate your glass of water.

    Furthermore, the manufacturer’s specifications frequently follow when it comes to filtering cartridges. Those standards and instructions are already recognizable to professional technicians. They’ll start by choosing the form and type of cartridges. Then look for the required component.

    When Do I Need to Change the Filters?

    When should you replace your reverse osmosis filters? The suggested filter and membrane replacement schedule, as well as step-by-step instructions for replacing reverse osmosis water filters, are included below.

    • Sediment Pre-Filter: Replace every 6-12 months. You may need to replace it frequently if you’re in regions with extremely high turbidity.
    • Reverse Osmosis Membrane: Replace every 24 months. Replacement in the reverse osmosis membrane.
    • Carbon Pre-Filter: Replace every 6-12 months. It will help to extend the life and quality of the membrane.
    • Carbon Post Filter: Replace this filter every 12 months. The replacement guarantees that the water is of high quality. Do not wait until an issue with flavor arises.

    To keep the water quality high, all reverse osmosis systems need regular service. On-time filter changes are the most crucial maintenance for a RO system. A clogged and damaged system might occur if RO filters and membranes don’t have replacement on time.

    whole house water filter cartridge
    Pure water in glass and water filters on the blurred background. Household filtration system.

    Why Do I Need to Change the Filters?

    For starters, filters collect debris, which can cause clogging. As a result, the filters may become ineffective or completely unusable. Another reason is that several types of filters (particularly carbon-based filters) lose their adsorptive qualities over time.

    As a result, it’s important to replace the filters and cartridges regularly. Depending on the usage and “service cycle,” the time and frequency may vary. However, replacing the filters every 12 months is a good idea to be sure and safe.

    If your filter has been in use for more than a year, it’s time for maintenance and replacement. It ensures that the performance of your home water treatment system is maximized.

    How To Change Filter On Water Purifier: FINAL THOUGHTS

    Knowing when and how to change filter on water purifier is important. If you diligently follow its maintenance tips and replacement schedules, any water purifier system will only work smoothly and give you the best water quality. Filters are critical in supplying you with safe and clean water. Therefore, it is essential to clean the filters regularly to guarantee that you receive clean and safe drinking water.

    Awesome Water Filters can assist you in your other water filter replacement questions. Contact us today to learn more.