How to Install Under Sink Water Filter the Right Way?

Are you fed up of paying several hundred dollars a month on water bottles? Are you tired of having to carry around large five-gallon water bottles? Most likely, you’ve seen ads for water filters under sinks and would like to know more about the fuss is all about.

A water filter under the sink offers you maximum convenience , and at a less than the price of bottle water. It’s also well in giving your family pure water that is clean and free of contaminants. water straight to the kitchen sink.

How do you install it is it, you might be asking? It’s quick, simple and requires only a little understanding of plumbing. In this brief guide, we provide steps-by-step instructions to DIY under-sink water filter installation. However, if you’re not certain you’ll be able to complete the task by yourself, hiring a plumber could cost you about 200 dollars.

The Installation of a Under Sink Water Filter System and Materials You’ll Will Need

If you’ve ever tried any plumbing task around the home, the chances are you have the equipment you need. But, the procedure will require only a few tools accessible at:

  • Hardware stores of any kind (Lowe’s, Home Depot, Menard’s),
  • Or on the internet (e.g. Amazon)

Here’s a list:

Installation of an under Sink Water Filter Step-by-Step

The water filter under the sink is installed inside the cabinet beneath the sink. It is plumbed into the water lines for cold. If you are using an RO unit, then you’ll require setting up the water storage tank within the cabinet. Certain under-sink filters have a separate faucet to collect water that will require an additional process.

Here’s how you can install an under-sink water filer:

1. Stop your Cold Water Supply Valve

If you open the cabinet for your kitchen sink you will find an empty drainpipe and two in-coming water lines. It is necessary to shut the valve that supplies your cold line because the filter is used only to provide cold water.

Bonus Tips Are you unsure what pipe is meant for cold water? Switch on the hot water faucet in the sink. Next, press the lines to determine what one of them is the most hot. Let that one go and move on to the next.

Check cold water line underneath and water shutoff valve.

2. Take off your Cold Water Tubing

You must cut the connection that supplies cool water from the tap in the kitchen. Make use of an wrench to loosen the nuts and disconnect all tubing that is connected to the line.

3. Install the adapter/feed Valve

The next step is to connect an adapter to the water line that feeds your. Make use of an copper T-adapter and an extension to connect the 1/4-inch tubing connector.

  • Cover Teflon tape around the threads to ensure good seal.
  • Then, carefully connect the T through that cold water line.
  • Make sure you use two wrenches, It’s necessary to ensure that you get the perfect fit. Keep in mind that you shouldn’t over-tighten.

What’s next? You should connect the tubing from the water filter under the sink with the T made of copper.

  • Connect the shut-off valve to the tubing of plastic. This valve is small and makes replacing cartridges very simple.
  • Slide the nut into the slide which is part of the fitting for T.
  • Insert the copper into the pipe to allow it to remain in place.
  • Connect the tubing to the copper T and tighten the fitting.

4. Make a hole in your Sink

If your sink’s filtering system includes an additional faucet (dispenser) to filter water it is necessary to create a hole on the countertop. It is also possible to make use of the hole that is already drilled for soap dispensers. In any case the most common dimension to use for tap holes is 35mm or 1 3/8 inches.

If you own granite countertops then you’ll need grinders to do the task. It’s a bit tricky as well as messy and may cause damage to the granite if you don’t know how to perform it right. This is a useful video that we found on the internet which clearly explains the process:

5. Installation of the New Faucet

When you’ve successfully drilled an opening in your countertop, now it’s time to install the additional faucet. You may need a companion or someone else to support the faucet on top as you tighten the fitting within the cabinet.

If you’re using an already-drilled hole it could be larger than what you require. To ensure that no water gets in the faucet, put some putty under the gasket on the faucet.

Utilize a set of nuts, washers and brass inserts for the tubing in the cabinet then connect it to the tubing for filtering. Make sure the fittings are tightened.

6. Install the Filter System

Place the water filtering system on the rear or side of the cabinet, and mark where you’ll require holes. Then, you can drill the holes with the drill machine.

Make sure you leave plenty of space beneath the unit so that you can take the housings off quickly. Be sure to attach the unit to the cabinet since it will have to support the weight of a significant amount.

7. Connect the plumbing

Connect the stages of the filter with the connections you’ve created. Find the ports to either one side. One port is to allow water inflow, and the other is for outflow.

The water feed line for cold needs to be connected with the adapter inside at the top of the filter head. In the same way, the tubing that comes from the faucet must be connected to the adapter outside.

8. Re-connect the water

Then, turn on the valve you initially turned off. Then, you can close the shut-off valve on your filter by sliding it vertically towards the tubing.

It is essential to slowly open the valve otherwise you could damage the valve in the event of sudden high pressure. Press the release button located on the top to let out any air that is trapped.

9. Look for Leaks

Be sure to check the connections in search of leaks or drips. Repair them immediately.

10. Let the RO System Flush

Switch off the faucet that is cold, and allow the water to run for a couple of minutes. It is essential to flush out new filter cartridges, and to remove any pollutants in the water line. There is no need to waste water, use it to wash your dishes or to provide water to your plants.

You can also take advantage of a myriad of benefits due to the recently installed under sink filter.

That’s it. That’s how you install a water filter under the sink in 10 steps.

In case you’ve got any concerns regarding installation of under sink water filter systems, don’t hesitate to post your comment below!

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