Keurig K-Slim Review (2023)

This Keurig K-Slim review analyzes a small single-serve coffee maker that brews any kind of hot drink.

Keurig K-Slim coffee maker

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The Keurig K-Slim coffee maker combines design elegance, ease of use, and top-notch performance with an extremely affordable price tag.

Of all the best Keurig coffee maker models, the Keurig K-Slim is ranked near the top because it is ideal in many ways for regular home users.

(Updated on January 3rd, 2023)

TABLE OF CONTENTS – What’s In This Coffee Machine Review?

Quick Keurig K-Slim Review

Despite its space-saving small footprint, the K-Slim has a large water reservoir. This means you can brew multiple cups of coffee without having to refill it each time.

The key factors of convenience and ability to fit into even small offices and kitchens make the Keurig K-Slim a popular favorite.

In the detailed Keurig K-Slim coffee maker review that follows, you’ll see some more reasons to help you decide if this is the right coffee machine for you.

Our Rating: 4.8/5

A Barista's Daughter Rating 4.8


  • makes hot, delicious coffee in just a minute
  • large 46 oz reservoir
  • compact and saves space on a countertop
  • quiet operation
  • choose from 3 different brew sizes
  • uses Keurig K-cups as well as other pods
  • quick and easy to brew
  • auto shut-off feature saves energy

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  • no temperature or strength control settings
  • only available in black

3 Questions… If You’re In A Hurry

So, you don’t have time to wade through a detailed Keurig K-Slim review. But want to know whether or not to buy this single-serve coffee maker.

Here are just 3 critical questions to answer before you make a decision.

1. Is there anything seriously wrong with the Keurig K-Slim coffee maker?


If you’re worried that by ordering the Keurig K-Slim you’ll be saddled with a coffee machine that has any major flaws, stop!

You can set your mind at peace.

This is a perfectly good model with no serious problems or drawbacks. If you want a hot, delicious cup of delicious coffee ready in just a minute, then the Keurig K-Slim coffee maker is a good no-fuss choice.

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2. Are there any other coffee maker models to consider as alternatives to the Keurig K-Slim?

Alternative coffee makers

There are indeed some other Keurig models that have better or equivalent features to the K-Slim.

  • The Keurig K-Mini coffee maker is more affordable. It also offers a brew choice of 6- or 12-ounce cups of coffee. It has a smaller reservoir, making it very portable.
  • Another option is the Keurig K-Mini Plus model that offers strength control settings, and space to store upto 9 spare pods. It also comes in 5 color options.
  • The Keurig K-Supreme coffee maker is a higher end model with some additional features. Even though it costs more, the added benefits are worth it.

But if all you want is a simple, effective, fast single-serve coffee machine for home use, there’s no question that the Keurig K-Slim coffee maker is an excellent choice.

3. Where to buy the Keurig K-Slim coffee maker?

You can buy the Keurig K-Slim from a retail outlet, or order one for home delivery online.

Regular stores and supermarkets like Best Buy, Target, Safeway or Walmart usually have the best Keurig coffee maker models in stock. If you time your purchase during special seasonal sales, you could even enjoy some great discounts.

A more convenient way is to order the Keurig K-Slim online from e-commerce portals like

You can avoid the time and trouble of visiting a store, and have the coffee machine delivered to your home at no extra cost.

Often, Amazon and other online stores offer deep discounts and cash back coupons which may help save money on your purchase.

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So now that you have a quick overview, let’s dive deeper in.

Keurig K-Slim Coffee Maker Review

Key Features & Technical Specifications

Keurig K-Slim coffee maker review - Overview

Key Features of the Keurig K-Slim Coffee Maker

  • Product name: K-Slim
  • Brew size: 8, 10 and 12 oz
  • Water reservoir: 46 oz, removable
  • Display: Button control panel
  • Temperature control: No
  • Strength control: No
  • Milk frother: No


  • Reservoir: 46 oz
  • Size: 12.14 x 15.2 x 4.76 inches
  • Weight: 6.2 lbs
  • Material: Plastic
  • Brew sizes: 8, 10 or 12 oz cups
  • Milk frother: not included

Keurig K-Slim Review

Style and Appearance

Designed by Keurig in response to demand for a compact coffee machine that can fit on any countertop, the K-Slim coffee maker was intended to be small.

At barely 4.76″ wide, and just 12″ tall x 15.2″ deep, this is among the tiniest single-serve brewers available today.


Keurig K-Slim coffee maker review : Design


But don’t let this fool you. The K-Slim is a power-packed coffee maker which whips up a delicious hot cuppa in record time.

It’s quick and easy to operate, making it a great choice for many homes.

Available in only black, this coffee maker looks chic and trendy. It fits nicely into diverse decors and interiors. It looks right at home in a kitchen, office or pantry.

Constructed from durable and sturdy materials, the Keurig K-Slim appears deceptively fragile. But it’s actually strong and lasts long.

Many happy owners have confirmed in their Keurig K-Slim reviews that these machines work fine for years.

The only design concern is that the machine comes with a very short power cord which restricts placement.

A one-year manufacturer’s warranty safeguards you against manufacturing faults and defects.

Keurig K-Slim Water Reservoir

Water Reservoir

The large 46 oz clear plastic water reservoir can brew five to six 8 ounce cups of coffee from a single refill.

This is convenient. For personal use, it means you only need to refresh the water tank once daily.

Located at the back of the machine, the clear transparent tank lets you see the water level and fill it up whenever necessary.

Being detachable would make this easy. You could just carry the tank to the sink and fill it up. However, you can fill it up by pouring water into the reservoir from a jug. It needs some clearance above the machine, though.

Removable Drip Tray

Many users like brewing coffee in a travel mug. Typically 7″ tall, these cups can fit comfortably into the Keurig K-Slim coffee maker.

By pulling out the drip tray, you’ll gain enough clearance to place a travel mug in the device. This is convenient and quick.

Keurig K-Slim Review


Like any coffee machine review, this one will focus on the Keurig K-Slim’s performance.

Compared with other picks in the best Keurig coffee maker models collection, the K-Slim is no slacker.


Keurig K-Slim coffee maker review : Performance

It is fast and efficient at its task.

In just a minute, you’ll have a hot cup of coffee brewed to your liking.

And the device is easy to operate as well.

Brew Size

One of the features that often tilts a decision in favor of a coffee machine model is the range of brew sizes it offers.

Some coffee lovers brew a single large cup at once. Others prefer smaller hits over the course of a day.

The Keurig K-Slim coffee maker gives you a choice between 8-, 10- and 12-ounce cups.

Unlike the K-Mini and K-Mini Plus models, the K-Slim does not brew all the water poured into the reservoir. Instead, you select the brew size – 8, 10 or 12 ounces – and the machine only uses that to brew.

Coffee Filter

Although the Keurig K-Slim doesn’t require a filter, you’ll enjoy better flavor when you use one. Tiny particles and impurities get filtered out, enhancing the coffee.

Using a water filter with your reservoir also extends the coffee maker’s lifespan and requires descaling less often.

Keurig K-Slim Coffee Maker Review

Ease of Use

The Keurig K-Slim has a simple, uncluttered user interface for easy operation.

There are buttons on the top of the coffee maker to:

  • turn on the machine
  • adjust serving size
  • begin brewing coffee

No complicated settings such as checklists, combinations or touchscreens. You won’t even have to open the user manual for instructions.

It’s all really intuitive and simple.

  • Simply pop the handle up to open the machine.
  • Then place a K-Cup into it, and select a brew size.
  • Punch the flashing K button.
  • Then sit back for a minute, and your delicious coffee will be ready.

It couldn’t be any easier!

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Keurig K-Slim Review

Taste Testing

Coffee brewed with a Keurig K-Slim coffee maker is delicious, fresh and strong.

Taste depends upon the quality of water and keeping the water tank clean. With proper maintenance, you’ll enjoy tasty coffee for years to come.

Rinsing or cleaning the needle between sweet beverages ensures flavor will be retained. And if you’re using the machine after a break, refresh the water tank before brewing.

Keurig K-Slim Coffee Maker Review


Keurig K-Slim coffee maker review : Features

All Keurig coffee maker models are efficient at brewing coffee. And the K-Slim is no exception to this rule.

It has some cleverly engineered features that make this model better than others in some ways.

Auto Turn Off

The Keurig K-Slim automatically shuts down power after 5 minutes of inactivity.

With this auto-off technology, you won’t have to worry about forgetting to switch if off. This feature saves energy and cuts down on your power consumption. It also reduces the risk of electrical accidents.


The Keurig K-Slim coffee machine is compatible with all kinds of K-Cups, be they Keurig or other brands like Green Mountain or Starbucks.

This means you can enjoy a wide range of flavors in your coffee. The machine accepts the universal K-Cup filter. So you can even brew coffee grounds.

For some users, this flexibility in being able to make drip coffee is a deciding factor.

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Keurig K-Slim Review

Clean Up & Maintenance

The Keurig K-Slim is extremely easy to maintain. Cleaning up after use is quick and convenient.

  • All you need is to wipe the exterior with a damp cloth once every week.
  • With a non-fluffy cloth, you can also remove any dirt and dust that collects on the machine.
  • The water reservoir and drip tray can be easily cleaned. Just wash them in soap solution and rinse under running water in a sink. Dry them before slipping them back into the coffee maker.
  • The brewing needle can be cleaned by brewing clear water in a cup (a ‘cleansing brew’).

Descaling the water tank is necessary once in 3 to 6 months. This gets rid of deposits of lime, scale and bacteria. Though it takes some time, this is not really difficult or complicated.

You can minimize scale build up by using bottled water, or by including a water filter.

Keurig K-Slim Review

Simple And Sweet Coffee Maker

Keurig K-Slim review
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The Keurig K-Slim is a nice, simple, effective coffee maker which delights its users.

  • There isn’t a strength control setting. So those who enjoy strong, near-bitter coffee might be disappointed.
  • The machine also lacks temperature control, or facility to make iced coffee.
  • But you can still enjoy a cold drink by brewing your coffee and pouring it over ice cubes!
  • And there’s no reason why you can’t boil hot water in it, and then make tea, oatmeal or hot chocolate drinks using it.

Let there be no question about it. This is by no means a premium coffee machine with loads of special features.

But it is an extremely good coffee machine for the right kind of user.

Keurig K-Slim Review : Should You Buy It?

Even though this popular Keurig coffee maker isn’t very high tech, and doesn’t offer many advanced features, it’s a good and efficient machine.

And hopefully this Keurig K-Slim coffee maker review has helped you learn enough about it to know if it’s right for you.

This coffee machine is ideal for individuals or small homes where taste and speed combined with efficiency are the primary needs.

Being compact and tiny, the Keurig K-Slim is also a great choice for offices and homes with space constraints.

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Despite its small size, the 46 oz water tank lets you brew 5 to 6 cups without having to refill.

And the removable drip tray accommodates even larger 7″ travel mugs.

Although there are other Keurig coffee maker models that offer far more features, this comes at a higher price and with more complexity in operating the machine.

If you’re looking for a simple coffee maker that brews delicious, hot coffee in a hurry, then the Keurig K-Slim coffee maker is an excellent choice.

Keurig K-Slim coffee maker review
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