How to Install An Under-Sink Water Filter


Improving the taste of your home’s water is easy!

Every municipal water supply that I have drank from has always tasted and smelled like chlorine or other chemicals. Luckily there are filter options for just about every complaint you may have with your water supply these days. In my previous home I installed an in-line water filter below my kitchen sink and after moving to our new home this past summer I was instantly reminded of how effective those inexpensive under-sink water filters are.

The water filter I chose was one that I had good results with previously. It’s very budget friendly and installs in just a couple minutes. The kit comes with the filter, a hanging bracket, two flexible hoses, and some hardware. While every kit may contain slightly different instructions to install the filter the general process is the same. They are all super easy to install.

Check your materials before installing you water filter

First locate where you want to install the filter. You need to make sure that there is enough height to allow for changing of the filter and that the bracket is close enough to the water supply for the hoses to reach. Once a desired location is found, mark where you need to install the mounting screws. Install the screws loosely so that the bracket can be slipped on and off.

 Locate where you want to install the water filter

The existing supply line has some water in it still so after you remove it from the supply pipe you will drip some water on the bottom of your cabinet. Place a few towels down to catch this water.

Prepare for a little water to drain out.

Make sure you turn the water off before removing the existing supply line. Use a wrench to remove the supply hose. This is a standard size so you should be able to use the same wrench to install the new line later. Don’t remove the other end from the faucet. We won’t need to mess with that side of the hose.

Shut off the water supply before unhooking the supply line!

The kit should come with an adapter to connect the new hose with the end of the existing supply line. These kits use slip in connections that are super easy to work with. With the adapter in place, firmly insert one end of the new hose into the adapter. You shouldn’t be able to pull the hose out of the adapter by pulling on it. If you ever need to disconnect one of these connections you will have to push the plastic retaining bushing into the fitting in order to remove the hose.

Making the connections

Then connect the other end of the hose into the exit side of the bracket.

Making the connections

Slip the nut and compression ring onto one end of the remaining hose and insert the sleeve into the same end of the hose.

Making the connections

Then attach it to the supply pipe. As you tighten down the nut the compression ring will tighten and form a water tight seal on the flexible hose.

Making the connections

Then attach the other end of that hose to the intake side of the filter bracket. Make sure both connections on the filter bracket are firmly in place.

Making the connections

Before installing the filter itself, mount the bracket on the previously installed screws and tighten down the screws. My kit came with a third screw to use during the final installation. Then insert the filter cartridge. Turn the water on slowly and make sure you don’t have any leaks. If one of the slip connections is leaking water odds are you didn’t push the hose in far enough.

Attach the water filter to the mounting bracket

Something else I like to do is write the date when I installed the filter so I know exactly how long I have been using it. Each filter has a different lifespan so you will have to replace yours as indicated by that particular filter kit. Before drinking from the filtered water you need to flush the filter by running the water for about 10 minutes. After that you should be ready to enjoy your water.

Write the date on the water filter.

There are many filter options out there. I chose one that just removed the chlorine odor and taste as well as any sediment that may be in the system. The was also just an in-line unit for a single sink. There are a lot of different filter options out there that remove a lot more than the one I installed as well as filter a lot more water than just one sink. Do you have a water filter installed in your house? If so what filter setup did you go with and why?


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