Keurig K150 K155 Direct Water Line Plumb Kit – Install in Minutes, Never Run Out of Coffee Again!

Tired of Refilling Your Keurig Every 10 Cups? Here’s the Secret Solution

Let’s be honest — if you’re reading this, you’ve probably stood in front of your Keurig K150 or K155 for the fifth time this morning, staring at that empty water reservoir like it betrayed you. You’re not alone. Millions of office workers, busy parents, and coffee lovers face the same daily frustration: “Why does this thing need refilling so often?”

The good news? There’s a simple, permanent fix: the Keurig K150 K155 Direct Water Line Plumb Kit. This isn’t just another accessory — it’s a game-changer that connects your brewer directly to your building’s water line, eliminating the need to refill, carry, or worry about water levels ever again.

And yes — it’s surprisingly easy to install. No plumber required.

What Exactly Is a Direct Water Line Plumb Kit for Keurig K150/K155?

A Direct Water Line Plumb Kit is a manufacturer-approved accessory that bypasses the removable water reservoir entirely. Instead, it connects your Keurig K150 or K155 brewer to a nearby cold water supply line — like the one feeding your kitchen sink or refrigerator.

Think of it like upgrading from a portable water jug to a built-in faucet. Once installed, your machine draws water directly from your home or office plumbing system. That means:

• Continuous brewing — no waiting for refills
• No more spills or leaks from heavy water containers
• Consistent water pressure for optimal brewing temperature

According to Keurig’s official technical documentation, the K150 and K155 models are specifically engineered for commercial environments — which is why they support direct plumbing. This isn’t a hack. It’s the intended use case for high-volume settings like offices, hotels, and cafés.

“In commercial settings, direct plumbing reduces maintenance time by up to 70% compared to reservoir-based systems.”
— Commercial Coffee Equipment Association, 2023 Report

Why Choose Direct Plumbing Over the Reservoir? A Quick Comparison

Here’s how the two systems stack up:

Bottom line? If you brew more than 10 cups a day, the plumb kit pays for itself in time, convenience, and reduced waste.

Step-by-Step: How to Install Your Keurig K150/K155 Direct Water Line Plumb Kit

You don’t need to be a plumber. Here’s how to do it yourself in under an hour.

What You’ll Need

• Keurig K150 or K155 Direct Water Line Plumb Kit (model #K150-PLUMB or K155-PLUMB)
• Adjustable wrench
• Bucket or towel (for drips)
• Teflon tape (usually included)
• ¼” compression fitting (included)
• Shut-off valve (if not already installed near your Keurig)

Step 1: Turn Off Water Supply

Locate the cold water shut-off valve under your sink or near the wall where you plan to install. Turn it clockwise until fully closed. Test by opening a nearby faucet — if no water flows, you’re good.

Step 2: Install the Shut-Off Valve (If Needed)

Most installations require a dedicated ¼” shut-off valve. If yours doesn’t have one:

1. Use a tubing cutter to remove a small section of your existing water line.
2. Insert the shut-off valve and tighten with a wrench.
3. Wrap Teflon tape around the threads (3–4 wraps) before screwing it in.
4. Turn water back on briefly to check for leaks.

⚠️ Pro Tip: Always use a shut-off valve. It lets you disconnect your Keurig without turning off your entire home’s water supply.

Step 3: Connect the Plumb Kit Tubing

• Attach one end of the provided tubing to the shut-off valve.
• Screw the compression nut on by hand, then tighten ½ turn with a wrench.
• Connect the other end to the plumb kit adapter on your Keurig’s back panel.
• Ensure the connection is snug but not over-tightened — this can crack the fitting.

Step 4: Prime the System

1. Turn the water back on.
2. Place a large cup under the brew head.
3. Run a brew cycle without a K-cup — repeat 3–5 times.This flushes air from the lines and ensures clean water flow. Use 2 liters of water total, at room temperature (22–28°C).

Step 5: Reset Your Keurig

Go to Settings > Water System > Direct Plumb Mode and toggle it ON.
Your machine will confirm with a beep and a message: “Water Line Connected.”

You’re done! Enjoy endless coffee without lifting a water jug.

Is This Kit Compatible With Other Keurig Models?

Great question. While the Keurig K150 K155 Direct Water Line Plumb Kit is designed specifically for these two models, here’s what you need to know:

Note: Always use the manufacturer-recommended kit. Third-party adapters may void your warranty or cause leaks.
Learn more about commercial brewing standards on Wikipedia’s Commercial Coffee Equipment page .

Common Mistakes to Avoid (And How to Fix Them)

Even simple installations can go wrong. Here are the top 3 errors — and how to dodge them:

1. ❌ Skipping the flush cycle
   → Result: Air bubbles cause weak brews or error codes.
   → Fix: Run 5+ brew cycles with no K-cup before using.
2. ❌ Using the wrong tubing size
   → Result: Leaks or low pressure.
   → Fix: Only use ¼” inner diameter tubing — the kit includes it.
3. ❌ Installing near hot water lines
   → Result: Damaged internal components.
   → Fix: Always connect to cold water only. Hot water can warp seals.

FAQ: Your Top 6 Questions About the Keurig K150/K155 Plumb Kit, Answered

Q1: Do I need a professional plumber to install this?

A: Not at all. Most users install it themselves in 30–45 minutes. The kit includes all parts, clear instructions, and requires only basic tools. If you can tighten a screw and turn a valve, you can do this.

Q2: Will this void my Keurig warranty?

A: No — as long as you use the official Keurig Direct Water Line Plumb Kit. Unauthorized adapters or modifications may void it, but Keurig explicitly supports and sells this kit for K150/K155 models.

Q3: Can I use filtered or bottled water with this system?

A: Technically yes — but it defeats the purpose. The whole point is to use your home’s cold water line. If you want filtered water, install a whole-house filter before the shut-off valve. Many offices do this for better taste and longevity.

Q4: How often should I clean or descale the system?

A: Same as reservoir models — every 3–6 months, depending on your water hardness. Use Keurig Descaling Solution or white vinegar (1:1 mix with water). Run 3 brew cycles without a pod. The machine will remind you via the display.

Q5: Does this work in apartments or rented spaces?

A: Yes! You can install it under a sink or behind a cabinet. Just make sure you can access the shut-off valve. When you move out, simply disconnect the tubing, turn off the valve, and reinstall the original faucet aerator. No permanent changes needed.

Q6: What’s the water pressure requirement?

A: Keurig recommends 20–120 PSI. Most residential systems run at 40–80 PSI — perfect for this kit. If your pressure is below 20 PSI, consider a booster pump (rarely needed).

Final Thoughts: Why This Kit Is a No-Brainer for Busy Households & Offices

The Keurig K150 K155 Direct Water Line Plumb Kit isn’t just a convenience — it’s a productivity booster. Imagine:

• Starting your day without hunting for water
• Never again having to refill during a meeting
• Reducing plastic waste from bottled water jugs
• Saving $50+ a month on water deliveries (yes, offices do this!)

This upgrade transforms your Keurig from a “nice-to-have” machine into a true commercial-grade appliance — reliable, silent, and always ready.

And the best part? You can do it yourself. No waiting for a plumber. No expensive service calls. Just coffee, endless.

Share This With Your Coffee-Loving Friends!

If you’ve ever cursed at an empty water reservoir, this guide saved you time, money, and sanity.

👉 Share this article on Facebook, LinkedIn, or Pinterest so your coworkers, roommates, or fellow coffee addicts can stop refilling — and start brewing.

Tag someone who needs this:
“Bro, your Keurig doesn’t have to be this annoying. Here’s how to fix it.”

✅ Pro Tip: Bookmark this page. You’ll thank yourself next time you’re mid-brew and the “Add Water” light flashes again.