How often to change reverse osmosis filters

Clover Dane

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How Often To Change Reverse Osmosis Filters

The changing of the filters is necessary for the reverse osmosis system’s functioning. The filter changes depending on the quality of water as well as the total using the amount of the water. ideally replacement of Ro filters be done in every 12 months. But in some cases, you will need more frequent adaptations of the filters. The below are some tips through which you will understand when it’s time to replace the filter. By the way, you can enhance the life of the reverse osmosis system. With the appropriate changing of the filters, you can also maintain the quality of the water. Now you want to comprehend how often to change reverse osmosis filters.     

How often to change Sediment Filter

The sediment filter is the first line filter of the reverse osmosis system. Generally, the purpose of this system is to eliminate sand, rust, dirt, and other things. Moreover, it is the most critical filer that can increase the life of the system.

This filter has a large filtering capacity. It removes all the dirt and sand and extends the life of other filters. Otherwise, other filters may clog when this filter needs to change.

The changing of the sediment filter depends on the condition of the water. If the water is full of sediments, then this pre-filter has to change after every six months. Significantly, the well water is with many types of residue.

On the other hand, if the water is low with sediment, then pre-filter can change after one year. You can also see the condition of the filter through the transparent chamber of the system.

How Often To Change Reverse Osmosis Filters

How often to change Granular Activated Carbon and Coconut Carbon Block Filter

The granular carbon filter is for the protection of the reverse osmosis membrane. The five stages of the reverse osmosis system use two types of carbon filters. This granular activated carbon is excellent for eliminating the chlorine from water. This filter removes the chlorine before reaching the membrane of the system.

The second carbon filter ensures the elimination of the chlorine’s remaining traces. If the filters will not change on time, then the chlorine reaches the membrane. In this case, there are more chances of the breakdown of the membrane.

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As a result, it will lead to the failure of the system. The lifespan for such filters is not long. You have to change these filters after every six months or one year. The replacement of these filters depends on the quantity of chlorine in the water.

How often to change Reverse Osmosis Membrane

The membrane of the reverse osmosis is the star of it. It enables to remove the dissolved solids, including heavy metals, pesticides, etc.

Due to the hard-working work of the pre-filters, the reverse osmosis membrane lasts longer. Usually, it will last for up to one year. Even if use soft water, the membrane lasts for more than three years.

Hard water decreases the lifespan of the filters and the membrane of the filter. Therefore, the lifespan of filters depends on the condition of the water.

If you find flavors in the output water, then any filter is not working accurately. Furthermore, the test of water with a TDS meter helps you to know about the issue in performance.

The TDS meter tells you any issue with the filters. If you find a problem, then immediately replace that filter. It requires instantly maintaining the system through the changing of the filters. The RO membrane needs to change after every 1 to 2 years.

How often to change Carbon Polishing Filter

The carbon polishing filter contains the activated coconut shell carbon. After passing through all filters, the water moves through this filter. As compared to other filters, this filter has not much functioning. The purified water moves through this filter. It is different from the pre-filters. The lifespan of the filter is about 1-2 years. Thereby, you have to change after 1-2 years.

Flushing the System

When you replace the filters, and then also consider the cleaning. The sterilization of the filters is essential as it prolongs the filter life. Moreover, add sanitizer in the storage tank and tubing. It will ensure the delivery of safe and clean water. Otherwise, there no confirmation that water is safer or not for drinking.

On the positive side, it will also prevent the build-up of bacteria and other things. For flushing the system, firstly turn off the input valve from where water enters the system. Secondly, drain the storage tank. When you will replace the filters of the system, clean the entire system at that time.

Bring out all the filters from the reverse osmosis system. You will also have to remove the RO membrane and the polishing filter. No matter if there is no need for their replacement. Remove them from the system. At last, screw the covers of the housing without installing the filter.

Add the one cup of hydrogen peroxide in the first stage housing. After that, turn on the water input. Fill the entire storage tank with water. Finally, turn on the faucet of reverse osmosis and again drain the tank for once. At last, fill the tank one more time.

Next, switch the position off of the input valve. Drain the storage tank, and so then install all the new replacement filters. The last step includes the running of the system with one last more cycle for rinsing. Now, the reverse osmosis system becomes excellent to use.


With this article, you will get your answer about how often to change reverse osmosis filters. The changing of the filters is essential. When you do not replace the filter for a long time, then they are suitable for nothing.

After the lifespan of the filters, they are not able to perform their function very well. From time to time, the system needs to replace the filters. Whenever you replace the filters, then the cleaning of the system is also necessary. After flushing the system, you can install all other filters.