Keurig K-Duo Single Serve & Carafe Coffee Maker review: get the best of both worlds each morning

A top-tier, easy to use coffee machine suitable for those at-home baristas

Keurig k-duo pouring coffee on review
(Image: © Future / Casey Clark)

Top Ten Reviews Verdict

When you are looking for a cup of coffee to drink whether before work or a long day, the Keurig K-Duo Single Serve & Carafe Coffee Maker can get the job done quickly and efficiently. With two brewing options, you’re given the chance to decide what type of beverage you're itching for and can even change your mind. It’s super easy to clean making it ideal for families and the whole process from start to finish is less than five minutes so you don’t have to wait to go about your day.


  • +

    Large reservoir (60 oz)

  • +

    Can be used with ground coffee or K-cups

  • +

    Programmable features and auto brew available

  • +

    Sleek, compact design ideal for tiny kitchen spaces


  • -

    Potential for leaks

  • -

    Pricey for seemingly simple functions

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As a coffee enthusiast, I know how important it is to have an easy-to-use, quality coffee machine at home. Yes, I do like a cold brew from Starbucks every once in a while - however, that can quickly add up. That said, there are coffee makers out there suitable for in-home use, like the Keurig. I’ve been using a Keurig for as long as I can remember, but they’ve come a long way and are now considered a household name. I love my Keurig K-Select, but I decided it was time to try something new. Enter Keurig K-Duo. 

The Keurig K-Duo is exactly what it sounds like — it has the ability to brew both ground coffee and coffee cups in its two-in-one system. Without spilling too much, this coffee machine can be programmed to brew at the same time every day and has options available for different-sized cups depending on your caffeine needs for the day. 

Without further ado, keep on reading to see our full review of the Keurig K-Duo, as it may just be one of the best coffee makers out there. Want the machine like, now? You can find it on Amazon, where it has close to 18,000 five-star ratings, so you know you're going to be on to a winner already.

Casey Clark bio pic
Casey Clark

Casey Clark is a freelance writer from NYC who covers shopping, food, and lifestyle content. She has bylines in The Wall Street Journal, Huff Post, INSIDER, TIME, and more. She’s tested many products, from coffee machines to mattresses, and loves giving readers the inside scoop on what’s worth the purchase. 

I drink coffee nearly every day and prefer it bittersweet and more earthy. I tested the Keurig K-Duo for two weeks and am able to keep it for ongoing use. 

Keurig K-Duo Single Serve & Carafe Coffee Maker: First impressions

Upon opening the coffee machine from the packaging, I immediately noticed how lightweight, sleek, and polished it was. It’s not super fancy. However, it is more elevated than my K-Select. In terms of size, it is a bit larger than a standard Keurig because of the additional carafe, but it’s still small enough to keep on my kitchen counter in my tiny apartment. 

Each part of the Keurig K-Duo was individually packed. As a Type A person, it was ideal for me to keep track of everything during the initial setup process. It came with the machine, a water filter, a reservoir, and a separate carafe, all of which were super easy to put together using the instructional booklet. 

It didn’t come with K-Cups (these can be bought from Amazon) or ground coffee beans, so I had to supply that myself. I first went through the process of setting it up, which involved setting up the time and doing a “cleansing brew.”

keurig k-duo arrives with a helpful instruction manual

The Keurig K Duo comes with a useful instructional booklet (Image credit: Future / Casey Clark)

I set the LCD digital clock using two buttons labeled “H” and “M” and selected the brew button to solidify. Next, the cleansing brew involved running water through the filter as if you were making a cup of coffee. I filled up the 60 oz reservoir, stopped at the MAX fill line, waited for the water to heat up, and then selected the 8-ounce button as instructed in the directions. The “cleansing brew” was a pretty seamless process that lasted less than five minutes. I followed the same process for the carafe just to make sure it was thoroughly rinsed and ready for use.

What really stood out to me was the LCD screen and buttons. They were easy to read and set up in an intuitive way that you could figure out how to use the machine even without directions. I appreciated how they lit up for easy indication to let you know when it was time to brew and to highlight how many ounces and the type of brew selected.

I was a bit bummed that it only was available in one color, but black is always a solid choice for a kitchen appliance as it blends right in.

Keurig K-Duo Single Serve & Carafe Coffee Maker: Key specifications

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The specs of the Keurig K-Duo Single Serve & Carafe Coffee Maker review unit
Row 0 - Cell 0 Row 0 - Cell 1
Type:Single serve/carafe
Dimensions (in):12.92 (H) x 10.94 (W) x 12.76 (D)
Weight (lb):10.71
Settings:Brew size, buttons for brew strength, and auto-on and digital clock display
Type of coffee needed:K-cups, ground coffee beans
Cord length (in):30 in
Pressure: N/A
Heating Time:4 mins

Keurig K-Duo Single Serve & Carafe Coffee Maker: Price & availability

At the time of writing, you’ll find the Keurig K-Duo on the Keurig website for $98.99 - it’s on sale from its standard price of $189.99, and you can choose/add on other options - and on Amazon for $78.14

Score: 4.5/5

Keurig K-Duo Single Serve & Carafe Coffee Maker: Design

The Keurig K-Duo Single Serve & Carafe Coffee Maker features a 60-ounce reservoir to hold water, a glass carafe, and a heating plate. Its sleek and contemporary design makes it suitable for any modern kitchen while remaining functional. The buttons are big enough to see from far away, and they illuminate with light when selected for ease of use. 

Score: 5/5

design elements on the keurig k-duo

The Keurig K Duo has clever easy to see design elements (Image credit: Future / Casey Clark)

Keurig K-Duo Single Serve & Carafe Coffee Maker: User experience

Similar to other Keurig machines I’ve used in the past, I’ve found the K-Duo to be easy to use. It’s slightly more complicated since there’s both a carafe and a single-serve option, but at the end of the day, that just gives you more variety than hassle. 

To start the testing process, I started off by using the single-serve option. I filled up the reservoir, put it in the pod, selected 6 ounces, and let it work its magic. I followed the same process with different pods over the course of the week for 8, 10, and 12 ounces too. It was a pretty seamless experience. My only note is that I needed to use a bit of force to get down the handle to get the K-Cup into place — think about it – it has to puncture the cup for the water to go through. I also brewed a cup once and clicked the ‘strong’ button to see if I could get a strong, darker cup. 

Over the course of the two weeks, I also played around with the different program settings, like the brew and pour and pause and pour. Since I like my coffee hot, I appreciated the pause and pour setting because it dispensed hot water mid-brew without having to wait longer. As someone who is forgetful, I also thoroughly appreciated the Auto-Off button because it let me leave the house worry-free in the morning without second guessing whether or not I unplugged the coffee machine. There was a bit of excess dripping after the brew (1-3 drops max), but nothing too noticeable. 

using the k-duo with a pod

Using a coffee pod for the single serve option (Image credit: Future / Casey Clark)

As for the carafe, I used one tablespoon of my favorite ground coffee beans (as noted in the instructions) and put a filter into the designated area. I put the carafe on the heating plate, and in less than five minutes, I had a nice, hot, fresh cup of joe. I appreciated how the heating plate stayed on for two hours after brewing, so if I wanted to go back for a second cup, it wouldn’t be cold. 

My favorite part about this coffee machine was not just the coffee but also the reservoir. I didn’t find myself having to refill it constantly. I was able to get a solid 2-3 days' worth of coffee out of it before needing to refill it. If I drank less than two cups a day, then it would last more like 5-6 days. 

The only setting I couldn’t use was the high-altitude button since I don’t live about 5,000 feet. However, in order to enable it, you have to hold down the pod and carafe buttons and then select the mountain icon. 

using the carafe on the keurig k-duo

Using freshly ground coffee for the filter method (Image credit: Future / Casey Clark)

That said, both the pod and the carafe settings made a bit of squeaking noise when heating up, but nothing too extreme — 52 dB, to be exact. Also, I found both sides very easy to clean. I’d put the reservoir in the washing machine and then would do a hot water brew to clean out the inside of the pod and filter holder. It was also easy to clean the drip tray with a damp cloth. You’ll, of course, want to do this after the machine has cooled down a bit, so don’t injure yourself. Check out our guide on how to clean a Keurig for more top tips.

Score: 4.5/5

Keurig K-Duo Single Serve & Carafe Coffee Maker: Taste Test

Now that you know how to use the coffee machine and all of its features, let’s talk about arguably the most important part: the taste. 

As I mentioned above, I like my coffee bittersweet and nutty. This machine was able to brew me a cup that was up to par and coffee shop quality — not too bitter and not too acidic. I will say that I preferred the flavor of the carafe over the pod. I think it was a bit more flavorful and aromatic, enhancing the overall experience. The pod was still a really good option, but if I had to choose a favorite it would be the carafe. 

If you like a stronger cup, then I’d definitely suggest selecting the ‘strong’ button before brewing. This will give you a more earthy and strong taste than a regular brew. 

Score: 5/5

pouring coffee from the keurig k-duo carafe

Both brewing methods deliver delicious coffee results (Image credit: Future / Casey Clark)

The Keurig K-Duo Single Serve & Carafe Coffee Maker: How Does it Compare?

I’ve tried the Keurig K-Select before, and it’s similar to the K-Duo. However, the latter is definitely a step up from the former with the addition of the carafe. In terms of taste, both machines make a high-quality, tasty cup of coffee in less than five minutes. That said, the K-Select is slightly cheaper, but that makes sense, given its size and functions. 

If you’re looking for a slightly more elevated version minus the carafe, you’ll want to check out the Keurig K-Supreme Smart Coffee Maker. It’s very close in price when the K-Duo is not in sale, and you get a few more features.

Should you buy the Keurig K-Duo Single Serve & Carafe Coffee Maker?

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Score card: The Keurig K-Duo Single Serve & Carafe Coffee Maker
Price & availabilityIt’s a great value considering you can choose from two preparation methods. In terms of availability, it’s only available on Amazon and the brand’s website. This isn’t necessarily a bad thing, however, if you’re looking to other retailers like Bed Bath & Beyond or Target, you might not be able to find it. 4.5/5
DesignI gave this coffee machine a 5 / 5 rating because there’s nothing that it lacks. It’s small enough for kitchen spaces either large or small and boasts a chic modern design justifies the price point. 5/5
PerformanceFrom heating time to delivering rich, flavorful coffee, this machine hits the nail on the head. Although it may leave a drop or two behind, that easily falls into the drop tray for a mess-free experience that’s complete in less than five minutes.4.5/5

Buy it if...

You like to have options when it comes to your cup of coffee

If you’re indecisive, then you’ll like this coffee maker because there are lots of options. From the type of brew to the strength and amount, you have full freedom over how you want your coffee made. 

You like a strong aromatic coffee 

Coffee connoisseurs will enjoy a cup of coffee from the K-Duo, especially if it’s made using the ‘strong’ setting. Even if you don’t, the regular option is just as tasty and satisfying so there’s really no wrong option. 

You don’t like to refill the reservoir  

I’m not a morning person, and the last thing I want to do is refill the water reservoir before brewing my cup of coffee. The large reservoir makes refills less necessary as it holds more water.  

 Don’t buy It if…  

You’re looking for a statement coffee machine 

Although it’s sleek and modern looking, it’s only available in one color (black), so there’s no room to make it a statement in the kitchen. 

You’re not a fan of using a carafe  

For some people, the ease of a coffee pod is what seals the deal. If you don’t envision yourself using a carafe, then there’s no need to spend additional money on it. 

You’re looking for fancy features (milk frothers, etc.) 

Although this machine does have some programmable settings, it doesn’t offer additional features for the coffee itself (milk frothers, steamers, etc.)  

How I tested the Keurig K-Duo Single Serve & Carafe Coffee Maker

  • Used the machine to make a cup of coffee (or two) every day for two weeks
  • Brewed cups with both the pods and coffee beans 
  • Followed the instructions carefully for set up and assembly

I reviewed the Keurig K-Duo Single Serve & Carafe Coffee Maker at my apartment in Florida. I also had other people (friends and family) taste the coffee to see what they thought about third-party credibility. 

Read more about how we test

Casey Clark
TTR Contributor & Freelance Writer

Casey Clark is a freelance writer from NYC who covers shopping, food, and lifestyle content. She has bylines in The Wall Street Journal, Huff Post, INSIDER, TIME, and more. She’s tested many products from coffee machines to mattresses and loves giving readers the inside scoop on what’s worth the purchase.