Plumb a Direct Water Line Filter Kit on Your Keurig K2500 Brewer

Time needed: 30 minutes.

Follow these instructions in order to directly connect your Keurig 2500 brewer to a direct water line filter kit. In just 30 minutes of installation you will enjoy fresh-tasting, filtered water in every beverage you brew! The filter has the added benefit of descaling your brewer as it removes impurities, helping to prolong the longevity of your K-2500 coffee maker throughout the years.

NOTE: You do not need a water reservoir tank in order to plumb your the K2500 brewer to your water supply. If your Keurig K-2500 came with a water tank you can remove it. Alternatively, if you don’t want to plumb the coffee machine to your water source, you can use a separate water reservoir tank as a sort of pour-over method, although you will need to constantly refill the tank. 

  1. Make Sure You Have All the Parts Handy

    Before you begin the installation process, ensure you have the Direct Water Line Filter Kit which includes the following required parts:

    PureWater Filters Purification & Scale Control Filter, Mounting Head with Screws and Bracket, the Keurig Direct Water Line Connector & Elbow, (2) Lengths of NSF Certified Food-Grade Water Line, a Ball-Valve, Angle Stop Valve, and a One-Way Check Valve.

  2. Attach the HEAD UNIT to the BRACKET with the (4) SCREWS

    Please observe the sides marked “IN” and “OUT” on the head. You’ll need to make sure the “IN” side is facing to the right as shown in the below picture.

    how to connect keurig k2500 kq8a kq8 gmt 5572 direct water line plumb filter kit step 1

  3. Remove the YELLOW cap from the top of the WATER FILTER

    Your filter may have a yellow plastic cap inserted into the top of the filter. If so, you’ll need to remove this before installing. This is just here to keep the filter fresh while not in use. If your filter does not have this, simply proceed to the next step.

    how to install keurig k2500 direct water line plumb filter kit 5572 kq8a kq8 step 2

  4. Attach the WATER FILTER to the bottom of the HEAD UNIT

    You’ll do this by simply twisting the filter until it fully and securely screws into the head unit.

    install keurig k-2500 direct water line plumb filter kit kq8a omnipure step 3

  5. Insert one end of the WATER LINE into the ONE WAY CHECK VALVE

    Note that the One Way Check Valve is already connected to the Grey Ball Valve. You’ll insert one end of the water line into the other free end of the One Way Check Valve. The other end will run to and ultimately connect at your water supply inlet.

    keurig k2500 direct plumb water supply filter kit 5572

  6. Insert the GREY BALL VALVE into the HEAD UNIT at the side marked “IN”

    Note: DO NOT remove the grey, plastic rings as seen in the picture below.

    connect keurig k2500 brewer to direct water line supply plumb

  7. Connect the open end of the WATER LINE to your cold water source

    You’ll do this by either using the included 1/4″ Adapter or the Angle-Stop Valve. Make sure you TURN OFF your water source before doing this, otherwise you could be in for a wet surprise.

    how to install keurig k-2500 coffee maker direct water line plumb filter kit 5572 kq8

  8. Flush the WATER FILTER

    Now you’ll want to FLUSH the water filter to rinse out the carbon and prepare it for filtering. Hold the open end of the water filter over a sink or large bucket, so that the side marked “OUT” on the Filter Head is facing into the sink/bucket. Next, turn on your water supply (if nothing comes out, you may need to twist the green lever on the Grey Ball-Valve to the “OPEN” position).

    You MIGHT see a bunch of GREY water come out of the filter. This is completely normal. Make sure to flush the filter with at least 5 gallons of water (or until the water runs clear) prior to use.

    Finally, turn off your water supply or turn the green switch on the Grey Ball-Valve to the “OFF” position again.

  9. Attach the COFFEE MACHINE CONNECTOR to your K-2500

    It will simply screw on to your brewer. Next, you’ll want to insert a small length of water line into the other end of the connector (your Kit may already come with the water line attached). Go ahead and trim this length of line to an appropriate size- just enough to be able to comfortably insert the water line into the side of the Head Unit marked “OUT”. If your Kit came with an extra elbow, you may opt to use it here to get a better angled fit.

    keurig k2500 direct connect water line filter kit

  10. Attach the BRACKET to the back of your brewer

    You’ll slide the bracket down and over the 2 existing screws that are already screwed into the back-top of your Keurig K2500. Once snugly fit, go ahead and tighten the screws. If you did everything correctly, the back of your machine should look like the picture below.

    kq8a 5572 keurig k2500 water filter plumb kit connection install

  11. Turn on your water supply

    Finally, turn your water supply back on and ensure the green switch on the Grey Ball-Valve is turned to the “ON” position. The installation is complete. You’re ready to brew!


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