How to Replace Water Softener Resin [A Complete Guide]

After years of exposure to chlorinated water (10 to 15 years), the resin from your water softener will most likely get damaged and thus the need to learn how to replace water softener resin. You will also have to change it if it fails to put out any soft water or runs out of soft water quickly.To tell whether your tank’s resin bed is damaged, check out to see whether the softener is using up the added salt at a regular rate. If it is and you still have no soft water, then, it only means that the resin bed has been saturated with iron deposits or damaged by chlorine and can no longer be regenerated.

Since changing your water softener resin proves to be an expensive service if you have a technician or a plumber do it for you, learn to do it on your own and save some bucks. To carry out this process, you need to familiarize yourself with the softener tank and how the resin bed has together.

To successfully replace your resin, you’ll have to spend a couple of hours since you need to do it carefully for the best results. Listed below are some tips on how to change water softener resin.

How to Replace Water Softener Resin – A step by Step Guide

1. Measure the tank

Start by taking a look at your water softener tank to check the quantity of resin you will require. You can also read the user manual or check the amount on the tank itself to ensure that you get it right. Always ensure that you have the amount prescribed by the company that made the tank.

2. Order your resin

Now that you’ve measured your tank and deciphered the amount of resin required, to order your resin Read Our Buying Guides & experts Reviews of Best Water Softener Resin online or from a local water treatment company. You need to be sure that the resin you intend to purchase is the right one for your tank.

Also, avoid going for the cheapest resin in the market just because you want to save money. Insist on going for one that is specific to your tank and your situation.You also need to purchase a resin funnel, a new riser tube if the old one is damaged and gravel if recommended for your tank.

3. Turn off the water

You can’t work on your water softener tank with the water still flowing in. You, therefore, have to turn off the main water off and turn on a faucet to drain the line. After draining the line, push the bypass over to release the pressure from your tank and then push it back.

After that, detach the water tube from the tank as this will give you the chance to work on the tank alone and also enable you to avoid damaging the water pipe. You also have to unplug the control valve from the electric outlets to prevent injuries.

4. Dispose off the old resin

To reach the old resin, open the top lid of your tank and pull it out using rubber gloves until you see the gravel at the bottom of your tank. Since resin is very sticky, remove it carefully without tugging at the soft tube in the middle. You also need to ensure that you don’t get any resin in the riser tube when moving it out. Dump the gravel too as you’ll need to replace it as well.

If your tank doesn’t require gravel, remove the riser first and then flush the old resin out. You, however, need to be extra careful not to spill it on the surface since its usually slippery. Should you step on it, you’ll find yourself flying in the air only to land on your you-know-what. Lay it on a trash can for your safety.After that, clean the tank with chlorine(bleach) and get ready to replace the water softener resin.

5. Replace the resin

Before replacing the resin, cut a new riser tube to the same height as the one before and insert it into the tank. To prevent resin and gravel from getting into the riser, cover its opening with duct tape or a plastic sandwich and a rubber band.You then have to wash the gravel first before inserting it at the bottom of the tank. The reason why you need this gravel is that it acts as a filter and helps to prevent the loss of your new water softener resin beads.To keep the exercise from getting messy, use the resin funnel to pour it into the tank. Fill it on all sides so that it gets almost to the top (3/4 full). Doing so helps create space for water to sit as it falls into the base of your tank.Pack the resin carefully and ensure that it doesn’t bend the riser or force it to change paths.

6. Close the tank’s lid

Now that you’ve successfully replaced the resin in your water softener tank, close the tank’s lid tightly using a screwdriver. Reconnect the control head to the tank and then connect it to the main water supply. Plug back you the power unit and test to compare the water hardness levels before and passing through the softener.Check the tank properly to ensure that it doesn’t leak after turning the water back on.


If familiar with your water softener tank, you don’t have to spend money on professionals anymore now that you know how to replace water softener resin. Go through all the instructions to familiarize yourself with how to turn the water off, how to remove the lid and most importantly, how to get the old resin out and replace. You’ll realize with it that it’s not a very difficult task after all. Replace your tank’s old resin and enable your family to enjoy soft water.

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