How to Change RO Filters: All You Need to Know

Reverse osmosis systems pass water through a set of filters. They are capable of getting rid of more than 99.9 percent of total dissolving solids (TDS).

They are extremely efficient at what they do however, as with all things, they’re not going to last forever.

If you wish to continue to make the most the reverse osmosis device You must change your filters in accordance with the recommendations of the manufacturer of your system.

In this article I’ll explain the frequency you should change the filters within the RO system. This is based upon the needs of RO systems in general however, you should go through your user manual to ensure confirmation.

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How Often Should You Change Reverse Osmosis Filters?

Sediment Pre-Filter

The first stage of filtering in the reverse osmosis process will be the sediment filter. This filter has a larger and larger dimension and eliminates suspended contaminants such as sand, dust, dirt and rust, thus preventing the sediment from getting clogged up and causing damage to the subsequent stage filters.

Typically it is the case that the pre-filter needs to be replaced every 6 months or one year.

Carbon Pre-Filter

The next step after the sediment pre-filter comes followed by the carbon pre-filter. The carbon filter makes use of the process of adsorption to capture cosmetic contaminants such as chlorine, drastically reducing them in drinking water.

Carbon filters typically lasts from between 6 and 9 months and after that, it’s going to need replacing.

RO Membrane

At the core of the reverse osmosis process is the membrane of reverse osmosis. This is the main filter within the whole system it is the one responsible for the removal of most impurities, both surface and dissolved in water.

It is necessary to replace the reverse osmosis membrane every two years on average and some last for up to 4 years. To replace your reverse osmosis membrane, you need to turn off the water flow, get rid of water inside your reverse osmosis system, remove membrane housing cap.

Carbon Post/ Polishing Filter

In the end, the carbon post-filter is used to remove any contaminants that might have been tiny enough to go across the RO membrane.

The post-filter can also eliminate any contaminants that could have leaked into the water while it was in the tank for storage.

Since the post-filter comes in contact with less pollutants and is more durable than a pre-filter. Consequently, you’ll only have to think about purchasing an filter replacement each 6 months to one year.

However, it’s vital to make sure that your post-filter gets changed as it should be, especially if the system is equipped with a water storage tank.

How to Change Filters in a Reverse Osmosis System

The process of changing the filter within a reverse-osmosis system will differ from one manufacturer to the next manufacturer, however most designs are created to make the process as simple as it is.

Before starting, I highly suggest reading the manual for your unit. It contains precise instructions on any particulars regarding changing the membrane of your device.

How to Replace Sediment and Carbon Filters

To change the reverse osmosis and carbon filters within the system you have, use these below steps:

Step 1: Buy the correct filter for the replacement.

I’d recommend buying directly from the company or the company’s Amazon page, to ensure security. There is a possibility to buy non-branded items that work with your system, however it’s a risk therefore make sure you thoroughly read the reviews before you commit to spending your money.

Step 2: Clean your hands

Wash your face by washing your face with soap and water prior to starting, which will stop germs in your body from getting into the filters.

Step 3: Shut off the water source

This will stop water from getting into the system. If you own an storage tank, shut off your ball valve. In addition, if your storage tank is connected to your refrigerator or ice maker shut off access to this valve as well.

Step 4. Remove the waterline

Turn on your designated RO faucet and allow any water that is left to drain into the tank. To prevent leaks, put the tray or bucket beneath the filter housing that will collect any drips.

Step 5: Clean the old filters

Remove the filters that require replacing from the housing of the filter then dispose them safely (many reverse osmosis filters may be reused now and reused, so consult your manufacturer if you’re uncertain). The wrench can be supplied by the manufacturer if your filters are slightly stiff.

Step 6: Disconnect and clean O-rings

Take off the filter housing as well as the O-rings on the system, then clean them clean with a towel and then place them on an uncluttered surface. This is a good opportunity to examine the O-rings and ensure they’re in good working order.

Step 7: Cleanse filter housing

Clean the interior of the housing using a bit of wash and soap. Dry thoroughly , and make sure all soap has been eliminated, then reconnect the housing to the unit.

Step 8: Lubricate the O-rings

Lubricate them properly and then put them back into the place they were removed from. Check that the O-rings have been in the correct position to avoid leaks.

Step 9: Add new filters.

Remove the filter replacement from its plastic package Then, insert the replacement filter inside the filter housing, and secure it in it in. You can either tighten the screws by hand or with the wrench for filter installation However, don’t try to over-tighten the filters.

Step 10: Switch onto the water

Switch your water supply back on and make sure there aren’t any leaks. If leaks are found then increase the pressure on your reverse osmosis water filters a bit more or make sure whether your O-rings are correctly placed.

Step 11: Clean & test

Switch on the faucet and wait for water to flow in it, which means that your filters are properly installed and the system is now operational again. If your system is equipped with an internal storage tank do not allow water to enter it until.

12. Fill the storage tank (if the tank is applicable)

After you’ve let water flow through your faucet for five minutes, shut off the water and open the valve to connect to the tank for storage. Allow your tank to fully fill and then close the valve that connects to your refrigerator or ice maker If applicable.

Your reverse osmosis water filter unit is now ready for be used again.

How to Replace the Reverse Osmosis Membrane

If you’re replacing an RO membrane procedure is slightly different

1. Clean up and prepare

Then follow the steps 1 to 4 above, removing the water supply, and wash your hands prior to starting.

2. Disconnect the the tubing

On the right-hand side of the housing for the tubing which connects to the cap on the membrane housing. Unconnect the tubing and press into the small band surrounding the tubing and doing this.

Step 3: Take off the any membrane that is no longer in use.

Remove the cap from and remove the cap from the RO membrane housing, then remove the membrane from the housing. It may be necessary to use additional tools to take out the membrane, if it’s stuck in the housing.

Step 4: Clean the membrane housing

I’d recommend taking the moment to wash the membrane cap since you likely haven’t cleaned it for at least two years. To do this, unplug the tubes from the opposite part of the membrane cap. If it helps you remember, label or color code the tubes to ensure you know which direction to place them once you’re finished.

Clean the interior part of the membrane housing with the bowl of warm, soapy water. Then, rinse thoroughly under the faucet. Clean the housing of your membrane thoroughly before attaching it back to the RO system.

Step 5: Insert new membrane

Take off the packaging of the membrane you are replacing and then put it in the housing. Make sure the O-ring’s end goes first. Continue to push until you feel that the O-ring makes contact with the bottom of the housing. It is important to use some force to ensure that your membrane sits installed.

Step 6 Removing the membrane cap and tubing

Now, you can screw the cap back into the membrane housing, and then connect the tubing that you took out earlier. It’s crucial to push the tubing in the fitting until it can’t go further, this will ensure that it’s secured properly and will stop any leaks. Make sure to give the tubing one quick pull after having done this to secure it into the right position.

Step 7. Run, flush and test the system

Follow the steps 10-12 above to complete the installation and ensure that you have your reverse osmosis system in operation once more.

What can I tell whether my reverse osmosis (RO) filter is faulty?

The most efficient way to determine when it’s time to replace the filters of your reverse osmosis device is to write it down. After you have installed the filters, make note on your calendar to mark when they require replacement. Remember that your carbon filter, post-filter and sediment filter all have a slightly different life span.

Of of course, we’re all not well-organized enough to note the exact time when our filters need replacing. If you’re relying on guesswork by yourself, here are three indicators to look out for that indicate that your reverse osmosis system has become faulty:

1. Low pressure water

Reverse osmosis systems are typically capable of supplying you with pure water in a matter of minutes. If you’re waiting impatiently for your water bottle to refill, it could be an indication that your reverse osmosis cartridges are in need of a change. This is because a blocked older water filter will take a lot longer to complete its task than a clean filter.

2. Bad taste

If your water begins to smell bad, it’s probably an indication that you’re required to change the filters to the system of your RO. If you’re in the need of changing your carbon filter it is possible that you taste chlorine particularly the water you drink.

3. Poor efficiency

Also the last thing to consider is that the RO system might not function in the same way if water filter cartridges need to be changed. Be aware of the sounds of the system running. If it appears to be always on this is a sign it’s running more slowly, and for longer.

Does each reverse osmosis filters identical?

Yes, and I am referring to this by replacing a water filter within the reverse osmosis process. The majority of systems come with various sizes of housing for the filter and a single reverse osmosis filter is not likely to work in an equipment manufactured by an entirely different manufacturer.

Some reverse osmosis water purifiers also come with a greater number of filters. They will require more frequent filters to be changed.

Furthermore, the frequency at which you need to change your water filters can depend on how good the item is. This is why it’s always recommended to spend a little bit initially on a product made by a manufacturer of water treatment that you can be confident in.

What do I do to tell whether my RO membrane requires replacement?

If you find that your RO system requires an upgrade to its membrane, you’ll likely see similar indicators to those the case of an upgrade to its filter.

Usually, two things take place when the membrane needs to be replaced The system will become less efficient in removing contaminants, and the amount of the water that is filtered might decrease. Both of these are unfavorable since it means you’ll drink in unfiltered waters ordealing with more waste water.

In the course of your time using this type of treatment for water, you’ll begin to know the way in which the RO water filter works. If the quality of your water is declining or your water flow decreases and the device is operating more intensely, over a longer period it’s a sign that it’s time to have the RO membrane replaced.

What factors affect the life expectancy that is affecting the life span RO filtering water?

There are a few factors that can affect the frequency at which your RO filters should be replaced. Your water consumption per day is one of the most significant. Manufacturers are unable to predict the length of time the filter will last by calculating the average amount of water used and in the case of many children and your filter may get blocked more quickly.

Another factor that can influence the RO filtration system lifespan is water’s quality. The more contaminants your water has the more energy the system will need to function and the more quickly the filters will get blocked. If you reside in an area that has particularly polluted water, follow your gut and replace the filters more often when necessary.

How much does changing cartridges for Reverse Osmosis Filters cost?

The price of a filter replacement typically depends on the manufacturer or brand that you purchase from. It’s common to buy a set of all the filters you require in a single unit for between $60 and $100, while RO membranes by themselves will cost you anywhere between $30 and $75. This is a relatively tiny investment considering that you will only have to buy new filters every 6 months, which is the minimum.

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