How To Replace A Reverse Osmosis Filter

Reverse osmosis water filtration systems are some of the top options on the market. However, as with most other household water filtration systems, water quality is only as good as the filters you choose to invest in. This means that if you have dirty, overused filters, it is highly unlikely that you will have an output of purified, clean, and safe drinking water.

If you’re at that point where you finally need to change your reverse osmosis water filters, it can be a daunting task. This guide will not only make sure that you are able to go through this process smoothly but also serve as an evaluation of your ability to carry out the process. If this seems confusing or beyond your plumbing abilities, we would recommend working with a service provider to ensure that you have the right filters and proper installation. To support you in doing this well, we have compiled a quick guide to replacing a reverse osmosis filter properly.

Purchasing The Right Replacement Filter

Different brands, units, and versions can have vastly different filters. When purchasing your replacement filter, make sure to have a clear idea of what unit, version, and type of reverse osmosis system you have. If possible, either bring a photo of your unit or an old filter to the store to ensure that you make the right purchase.

Shutting Off Your Water Supply

Before you get started on removing any compartments, make sure that you shut off the water supply at the main waterline as well as at the point where water enters your reverse osmosis tank. Make sure to turn the valves completely to ensure a watertight seal. Not only will this be crucial to being able to work on the replacement process, but can also save you time from cleaning up a watery mess! If you’re unsure on whether the water has been properly turned off, you can check by turning on the faucets and seeing if there is any water coming out.

Removing the Old Cylinders and Filter

Carefully unscrew the cylinders on your reverse osmosis system until they come off the unit. You will then be able to take out the filters and replace them with new ones. Take note that the cylinders will be filled with water and we would recommend having a bucket ready under your setup in order to catch any spills and dump out the contained water.

Proceed to repeat this for all the cylinders and filters in your unit.

Clean The Empty Cylinders and Install the New Filters

Take note that the cylinders will likely contain sediment, dirt, and other contaminants. We highly recommend cleaning and rinsing out each part before putting in the new filters. 

When installing your new filters, make sure that you are putting them in the right order as some units might involve having different filters in a different order. Carefully referring to the installation guide can ensure that your filtration system is at its best.

Now, after everything is screwed tightly back into place - simply turn on the waterline and you’re done!