5 Best Coffee Makers with a Water Line: Enjoy Your Coffee Without Water Refills

Coffee Geek Lab / 5 Best Coffee Makers with a Water Line: Enjoy Your Coffee Without Water Refills
Yurii Brown

Certified Barista

October 21, 2020

Best Coffee Makers with a Water Line

Tired of filling the reservoir in your coffee machine?

Or maybe you simply don’t have the time for that?

Whatever the case is, you may find a solution today. We are going to take a look at the best coffee makers with a water line. Let’s learn how to find a good device that would deal with refills on its own!

Brew Express BEC-110BSBest Overall — Editor’s Choice — Brew Express (BEC-110BS)
  • 10-cup thermal carafe;
  • Hot Water on Demand feature (no need to wait for the water to heat up);
  • multiple brewing sizes;
  • stainless steel construction;
  • suitable for commercial use.
9.5Check current price on Amazon
Keurig K150PBest Single-Serve Coffee Maker with a Water Line – Keurig (K150P)
  • direct water line plumbing compatible;
  • 5 cup sizes;
  • touchscreen controls;
  • can accommodate taller travel mugs.
9Check current price on Amazon
 Brew Express BE-110 BSBest Thermal Carafe Coffee Maker with a Water Line – Brew Express (BE-110 BS)
  • available in 2 colors;
  • stainless steel finish;
  • thermal carafe;
  • 10-cup carafe capacity;
  • multiple brewing sizes.
8.5Check current price on Amazon
BUNNBest for Multiple Brewing Sizes – BUNN
  • commercial single-serve machine;
  • brews cup sizes from 4 to 16 ounces with 0.25 increments;
  • adjustable mug tray;
  • touchscreen interface.
8Check current price on Amazon
Keurig K-3500Best High-End Option – Keurig K-3500
  • 5 brewing sizes;
  • adjustable temperature;
  • strong brew mode;
  • touch screen controls;
  • certified for commercial use.
8Check current price on Amazon

Our Reviews of the Best Coffee Makers with a Water Line

Best Overall — Editor’s Choice

Brew Express (BEC-110BS)

Brew Express BEC-110BS
  • brewing style: drip;
  • 10-cup carafe (stainless steel);
  • auto-fill system;
  • adjustable brewing size selector;
  • hot water on demand.

The Brew Express has the right to be among the best coffee makers with a water line for a number of reasons. This sturdy device is easy to use and can become a great addition to almost any kitchen.

This model is programmable and can start brewing at your desired time. This is a very convenient feature as you can wake up to freshly brewed coffee.

Now, keep in mind that programming might not feel too intuitive the first couple of times. However, once you get through the learning curve, you will be able to enjoy multiple benefits this coffee maker has to offer. The Brew Express makes coffee fast, which is ideal for busy mornings. Plus, it allows for various brewing sizes, including a single cup and a half of the carafe.

ProgrammableThe programmable settings may require a learning curve
Brews coffee fastCan’t fit travel mugs (anything taller than 5 inches)
Suitable for both home and commercial use
Easy to install
Multiple brewing sizes
Quality thermal carafe

Overall, this coffee maker is a rare find. It is fast, reliable, and quality made. Suitable even for commercial use, it makes coffee brewing as effortless as possible.

Best Single-Serve Coffee Maker with a Water Line

Keurig (K150P)

Keurig K150P
  • 5 brewing sizes;
  • brewing temperature adjustments;
  • touchscreen controls;
  • programmable brewing and shut-off;
  • removable drip tray to accommodate taller cups.

A good coffee maker with a water line doesn’t have to be bulky, and Keurig is here to prove that. This single-cup machine belongs to the best Keurig coffee makers and it’s suitable for both home and office use. This model can brew delicious coffee, tea, and cocoa straight into your mug without the fuss of refilling every time. This single-cup machine brews delicious coffee, tea, and cocoa straight into your mug without the fuss of refilling every time.

What makes this model stand out from the competitors is the adjustable temperature. You can control the brewing temperature in the range from 188 to 198 degrees Fahrenheit to achieve the best flavor.

Now, while the Keurig is ready to be connected to the water line, you will have to buy the plumbing kit separately. The installation process is quite simple, so you’ll be able to enjoy your coffee in no time. There are 5 brewing sizes. The Keurig even works with taller travel mugs when you need your coffee on the go.

Super easy to useThe plumbing kit is sold separately
Supports a variety of K-cupsThe coffee might not be hot enough for some users
Multiple brewing sizesQuite noisy, may not be ideal for quiet mornings
Adjustable temperature
Easy to install
Programmable timer

To tell the truth, the Keurig managed to surprise me. Yes, I had to buy the water line kit separately, but the results (and the coffee) are worth it!

Best Thermal Carafe Coffee Maker with a Water Line

Brew Express (BE-110 BS)

Brew Express BE-110 BS
  • thermal carafe;
  • programmable timer;
  • adjustable brewing sizes;
  • can be attached to the refrigerator or under-sink water line;
  • pause-and-brew sensor.

If you want a top-rated thermal carafe coffee maker, the Brew Express might interest you. This machine makes excellent coffee and, most importantly, keeps it warm without altering the flavor.

What’s peculiar about this model is that it doesn’t just sit on the counter. This is a built-in machine, which means it will save you lots of space (if you are ready to sacrifice portability, of course).

Whether you need to brew a single cup or a full carafe, the Brew Express got your covered. You can also pause the coffee maker mid-brew to sneak a cup, and it will prevent spilling automatically thanks to its sensors. And thanks to the adjustable cup selector, the Brew Express can be used as a great 5-cup coffee maker (or pretty much for any cup quantity you would like). This is a programmable model, so you can plan your coffee breaks in advance.

Doesn’t take much space thanks to the wall integration designMay be too pricy for some users
Fully programmableNeeds to be reprogrammed again in case of a power outage
Adjustable brewing sizesMay seem too noisy to some users
Quality thermal carafe
Pause-and-brew function

To sum up, the Brew Express might seem a little pricey, but it’s a worthy investment. It’s a space-efficient machine that shows consistently good results with every cup of coffee.

Best for Multiple Brewing Sizes


  • works with coffee pods only;
  • adjustable brewing sizes with 0.25 increments;
  • touchscreen interface;
  • automatic ejection of brewed coffee pods;
  • internal waste storage.

If you are looking for the best all-in-one coffee maker, you might want to consider the BUNN. Even though this model can’t grind the beans for you or froth the milk, it allows for multiple brewing configurations. Plus, it works with coffee pods, which means you don’t really have to do anything.

Ideal for a small office, this model is ETL and NSF certified. This means the BUNN meets the sanitation and safety standards and was approved by the independent third-party testing.

Working with coffee pods, this coffee maker automatically pumps water, brews coffee, and even ejects the used pods. The BUNN allows for serving size customization with conveniently small increments. It also has a hot water dispense function for tea or instant soups.

Quality constructionExpensive, more suited for commercial use
Brews coffee fastDoesn’t work with ground coffee, which may disappoint some users
Easy to use
Multiple brewing sizes
Great coffee quality

Overall, the BUNN is a serious guy in the world of coffee makers. This model can become an impressive addition to your office lounge room. And there’s a brewing size for any user!

Best High-End Option

Keurig K-3500

Keurig K-3500
  • color touchscreen;
  • auto-ejects used K-cups;
  • 5 brewing sizes;
  • hot water dispersion on demand;
  • adjustable temperature.

The last item on our list of top-notch coffee makers with a water line is another Keurig. This fancy machine would be ideal for someone who wants intuitive operation, quality design, and, of course, delicious coffee.

This model has a special High Altitude feature which makes it suitable for people living in high altitude areas (> 5,000 feet). This way, the Keurig eliminates all the possible issues you may have with the pressure inside the coffee pods.

The Keurig K3500 is a commercial-grade machine that can easily compete with some of the best coffee makers. It is well-made and allows for multiple brewing adjustments. You can control the temperature, the brew strength, and the size of your beverage. The machine will automatically eject the used pods, which means less effort on your part.

Intuitive controlsExpensive, more suitable for commercial use
Quality materialsThe plumbing kit needs to be bought separately
ProgrammableQuite noisy
Multiple brewing options
Bold brew for stronger coffee
Hot water on demand

To summarize, the Keurig is certainly worth your attention. Suited for commercial use, this model can save you a lot of time when brewing coffee.

Coffee Makers with a Water Line Explained

A coffee maker with a water line eliminates the need for constant refilling. Such coffee machines allow users to connect them to a water supply. They automatically pump water and use the needed amount to brew coffee.

Also known as plumbed coffee makers, such devices are usually quite large and can brew lots of coffee at once. They are mostly made for commercial use, although there are suitable models for home brewing as well.

Now, there are two main types of plumbed coffee machines. The first type comes with all the needed extensions and can be connected directly to your main water supply (or even your fridge water intake). The second type is home brewing machines that are compatible with plumbing kits. They allow for more freedom as you can use such machines on their own or buy the plumbing kit and connect them to the water line.

Some high-grade commercial models come with multiple carafesPlumbed coffee makers can work with both ground coffee and pods, depending on the model. 

Keep in mind that they tend to be quite expensive, especially the commercial stainless steel models, so you aren’t going to find such models among budget-friendly coffee makers under $100. If you buy a water line kit separately, you need to make sure your coffee maker is compatible with it. Manufacturers usually mention that information on the product page, but it never hurts to double-check.

Using a Coffee Maker with a Water Line: Pros and Cons

A coffee maker with a water line might not be everyone’s “cup of tea”.

At the same time, these machines can offer a lot of benefits.

So, let’s look at the most common pros and cons of using a plumbed coffee maker. Hopefully, this will help you decide whether you really need one or not.


  • super convenient because you never have to fill the water reservoir;
  • fresher flavor, as you don’t use the stale water that has been sitting in the tank for quite some time. This makes plumbed machines a safer option as there can be germs spreading in the reservoir (1);
  • ideal for large families of coffee lovers and frequent brewing;
  • can be used for commercial purposes.


  • limited portability. A plumbed coffee machine has to be placed close to the water line in your house, so you might not be able to move it around or put your coffee maker in a convenient spot;
  • the installation process may be tricky for inexperienced users. You may have to hire a professional, which means extra expenses;
  • prone to leaks due to extra plumbing (especially when installed incorrectly).

As you can see, there are some potential pitfalls. But if you plumb the coffee maker properly and take good care of it, the benefits will surely outweigh the potential drawbacks

Most of coffee makers with a water line look rather bulky. And while some can be mounted into the wall, others require a lot of counter space. If you have a small kitchen, then a regular model with a water tank would work better for you.

How to Pick the Best Coffee Maker with a Water Line

Water line coffee machines aren’t your typical home coffee makers.

Therefore, you should be careful when looking for a suitable model and pay attention to the most important factors. They can determine how convenient (or inconvenient) using your new device will be.

So, here’s what you might want to consider when shopping:

  • Customization. Depending on how much control over your coffee you want, you can pick a more advanced machine that allows for customization. Some models offer temperature controls within the optimal brewing range, like the SCAA certified coffee makers, for example. Simpler (and cheaper) coffee makers typically brew on a certain number of preset modes and don’t allow for many adjustments.
  • Materials. Most manufacturers use plastic in their coffee machines. You can also find stainless steel models, which are more durable and pricier. As for the plastic, it’s better to pick coffee machines that use BPA free components (at least for the sections that are in direct contact with coffee or water).
  • Type. If you aren’t sure what you want, the market has a lot to offer. There are filter coffee machines, automatic espresso makers, and multiple manual types of devices (2). If you need your coffee fast, you may want to consider a capsule model. If you want better quality beverages, an automatic pour-over machine may come in handy (like these). This type brews delicious coffee but doesn’t require much effort from you (unlike manual models).
  • Functionality. Now, this aspect will depend on your budget. Simpler (hence, cheaper) models typically have a rather basic functionality and just one brewing option. If your budget allows for it, you can get a programmable model, a good dual coffee maker (which would allow for multiple brewing sizes), or even a grind brew maker (for the freshest coffee).
  • Size. Usually, water line coffee makers are quite bulky, so you need to make sure you’ve got enough counter space. If you feel like such a large device may be too much and you want to consider something more compact, check out these. There are also plenty of models in between, like good 4-cup coffee makers or larger 10-cup devices.
  • Water line type. The market offers two basic types: direct and indirect. A direct type implies that a coffee maker has all the extensions suitable to be connected to your house water system. An indirect type means that a coffee machine can work with its water tank, but you can also connect it to the water line by using a special kit. The latter gives users more exploitation freedom. However, keep in mind that not all coffee makers are compatible with plumbing kits.
  • Water filter. Poor water quality can add unwanted flavors to your coffee or make it taste flat (3). Additionally, it can lead to calcium build-up inside the machine and decrease its lifespan. Therefore, a water filter is a needed bonus. The good news is, some manufacturers include a filter in the kit.

Where to Use a Coffee Maker with a Water Line

These days, people get most of their caffeine intake at home. Which leaves a rather small target market for plumbed coffee makers.

Coffee consumption by location

Source: http://www.city-data.com/blog/4744-coffee-consumption-united-states/

Still, there are many places (and situations) when a coffee machine with a water line may come in handy:

  • Offices. Due to their large capacity, plumbed models are a great option for a busy office. Your employees don’t have to waste their time constantly filling the water reservoir while still getting their caffeine fix and staying energized.
  • Restaurants and canteens. Customers aren’t typically keen on waiting for their coffee for too long. Therefore, an automatic water supply would save you some time (and effort) when making beverages, especially on a busy day. 
  • Airports. Plumbed coffee makers are a popular option for waiting rooms and airport lounge areas. Such machines are large and durable. They brew hot coffee and don’t require too much maintenance.
  • Home. If you are an avid coffee drinker who doesn’t want to be bothered with regular refills, you can get yourself a coffee maker with a water line. It doesn’t necessarily have to be overly large, as there are even pod models compatible with plumbing kits.

When shopping for a new coffee maker, it’s a good idea to check how easy it is to obtain the parts in case of a malfunction.


How to hook up a coffee maker to a water line with a filter?

You need to buy a plumb kit (if your machine doesn’t come with one). You may need some extra tubing and a line adapter. Following the instructions on the packaging, hook it to your water line (you can also use your refrigerator water supply).

How do I descale a plumbed Keurig coffee maker?

First, you need to turn off your water supply and remove the plumb piping from the machine (typically, you just need to unscrew the tubes on the back of the machine). Then you can descale your Keurig by pouring the descaling solution into the reservoir and running a cleaning cycle.

Which is the best coffee machine for an office or restaurant?

The best option would be a coffee maker with a water line. As it doesn’t require you to constantly fill the water tank, it can save you some time in a fast-paced environment. Consider the Brew Express or the commercial Keurig machines for that purpose.


When it comes to coffee makers with a water line, they can offer a lot of benefits.

It’s important to pay attention to the materials when picking one. Also, don’t forget that not all of them come with a plumbing kit. Sometimes you might have to spend a bit more money. But the truth is, it will be worth it.

Want to know which model impressed me the most? It was the Brew Express (BEC-110BS). This coffee maker combines reasonable pricing and impressive performance, which can win almost any user over. It is a sturdy, reliable machine that may step your coffee game up.

Have you picked your favorite? Which coffee maker appeals the most to you? Share your thoughts in the comments!


  1. The Public Health and Safety Organization (2012, October 30). Coffee Makers for Home Use. Retrieved from https://www.nsf.org/newsroom/coffee-makers-for-home-use
  2. Christina Herbst (n.d.). Your Ultimate Guide to Different Types of Coffee. Retrieved from https://www.tasteofhome.com/article/types-of-coffee/
  3. Debra Kelly (2020, February 18). You’ve been using your coffee maker all wrong. Retrieved from https://www.mashed.com/119098/youve-using-coffee-maker-wrong/

Yurii Brown

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