Review and Comparison of Keurig K-Duo and K-Duo Plus

Last Updated: February 2020

A few years ago, Keurig Introduced Keurig 2.0 as a way to brew a single cup of coffee as well as a carafe. Keurig 2.0 used multiple sizes of K-Cup pods (K-Cup, K-Mug and K-Carafe), you could not use ground coffee unless you’re using a refillable filter, which doesn’t always lead to the best results.

Now, Keurig is introducing a much better option for anyone looking for a single cup and full carafe coffee maker. K-Duo and K-Duo Plus are Keurig’s only coffee makers (as of the time of writing this) that can use both K-Cup pods and ground coffee (in an actual paper or permanent filter).

In this post, you’ll read about the features of each of these models and how they compare to each other.

Features of Keurig K-Duo Coffee Maker:

  • Easily and conveniently brew a single cup or a carafe, using either K-Cup pods or ground coffee.
  • Choose from multiple sizes for each brew type. Single cup: 6, 8, 10 and 12 oz. Carafe: 6, 8, 10 or 12 cups.
  • Strong brew option for single-serve brewing allows the K-Cup pod to steep a bit longer for a stronger taste.
  • Single cup side can accommodate travel mugs up to 8” tall.
  • Programmable settings for carafe brewing: setup your machine auto-brew for up to 24 hours in advance.
  • Pause & Pour: automatically pauses mid brew for 20 seconds allowing you to pour a cup before the full brew cycle is complete.
  • Large 60 oz water reservoir, shared between both single-serve and carafe brewing.
  • Includes: 12-cup glass carafe.
  • Compatible with all K-Cup pods including branded and non-branded pods from 3rd party brands. It is NOT compatible with K-Carafe, K-Mug, Vue or Rivo pods.
  • Dimensions: Height: 12.92” Width: 10.94” and Depth 12.76

Click here to learn more about Keurig K-Duo, read the customer reviews and buy it.

Features of Keurig K-Duo Plus:

  • Brew a single-cup or a carafe.
  • Multi-serve sizes: 6, 8, 10 and 12 oz for single-serve cups and 6, 8, 10 and 12 cups for carafe brewing.
  • Strong Brew option for single-serve brewing.
  • 60 oz water reservoir that can be repositioned to left, right or back of the machine.
  • Programmable auto-brew allows you to setup auto brewing up to 24 hours in advance.
  • Pause & Pour: automatically pauses mid brew for 20 seconds allowing you to pour a cup before the full brew cycle is complete.
  • Includes a thermal 12-cup carafe that keeps your coffee hot for up to 2 hours.
  • Dimensions (with reservoir positioned at the back): Height: 14.19”, Width: 7.68” , Depth: 15.88”
  • Compatible with all K-Cup pods including branded and non-branded pods from 3rd party brands. It is NOT compatible with K-Carafe, K-Mug, Vue or Rivo pods.

Click here to learn more about Keurig K-Duo Plus, read the customer reviews and buy it.

K-Duo vs. K-Duo Plus, What’s The Difference?

For the most part, the K-Duo and K-Duo Plus perform the same tasks for brewing a single cup or a carafe using either K-Cup pods or ground coffee. But here’s a few things that set them apart:

Design:

  • K-Duo has two sides, on the right is single cup brewing and on the left is carafe brewing with the water reservoir positioned at the back of the machine where both sides share it.
  • K-Duo Plus is a slimmer machine with only one spout that can be used for single serve brewing or carafe brewing. The reservoir of the machine is repositionable, so you can swivel it to either side of the machine or keep it at the back.

Included Carafe:

  • K-Duo includes a 12-cup glass carafe. The machine does have a heating plate that runs for 2 hours before automatically shutting off.
  • K-Duo Plus has a 12-cup thermal carafe that keeps the coffee hot for up to 2 hours. The machine does not have a heating plate (as it’s not needed).

Common Questions:

What Kind of Filters Do Keurig Duo Machines Use?

Like any other coffee makers, you can use either a flat bottom paper filter or you can use a gold-tone reusable filter.

Does Keurig Duo machines have timers?

Yes, both K-Duo and Duo Plus have timers that can be programmed for auto brewing.

Does the Keurig Duo Need a Water Filter?

The machine will work whether you use a water filter or not. If you use tap water or distilled water, a water filter is highly recommended to keep your machine as clean and durable as possible. It also makes your coffee taste better. The Duo machines are compatible with Keurig’s water filter starter kit.

Which One Do You Buy? K-Duo or K-Duo Plus?

Sale
Keurig K-Duo Plus Coffee Maker, Single Serve and 12-Cup Carafe Drip Coffee Brewer, Compatible with K-Cup Pods and Ground Coffee, Black
  • What’s in the box: 12 cup thermal carafe and mesh reusable ground coffee filter included with your brewer
  • Brew a cup and a carafe: Use both ground coffee and k cup pods
  • Strong brew: Brew a stronger, more intense single cup and carafe
  • Multiple brew sizes: Brew a 6, 8, 10, or 12 cup carafe and a 6, 8, 10, or 12 ounces cup
  • Multi position 60 ounces; Water reservoir: Can be positioned to the right, left, or along the back of the brewer to optimize counter space
Sale
Keurig K-Duo Coffee Maker, Single Serve and 12-Cup Carafe Drip Coffee Brewer, Compatible with K-Cup Pods and Ground Coffee, Black
  • What’s in the box: 12-cup glass carafe included with your brewer along with a heating plate to keep coffee hot.
  • Brew a cup and a carafe: Use both ground coffee and k-cup pods.
  • Multiple brew sizes: Brew a 6, 8, 10, or 12-cup carafe and a 6, 8, 10, or 12 ounce cup.
  • Compatible with keurig gold tone mesh filter accessory: A reusable coffee filter you can use to brew your perfect carafe (sold separately).
  • Large 60 ounce water reservoir: The 60 ounce water reservoir is shared between the single serve and carafe brewing, saving you time and simplifying your morning routine. Removable reservoir makes refilling easy.
  • Picking between the K-Duo and K-Duo Plus would depend on, whether you want a thermal or glass carafe and if countertop space in a priority to you.
  • K-Duo Plus, being slimmer and with a repositionable reservoir, would be the best choice for someone with limited countertop space.
  • Other than dimension and carafe material, you are getting the exact same features from both models.

Comparisons:

Keurig K-Duo vs. K-Duo Essentials:

Keurig K-Duo Essentials Coffee Maker, with Single Serve K-Cup Pod and 12 Cup Carafe Brewer, Black
  • MULTIPLE BREW SIZES: Brew an 8, 10, or 12-cup carafe and an 8, 10, or 12 oz. cup.
  • 60oz. SINGLE RESERVOIR: The 60 oz. water reservoir is shared between the single serve and carafe brewing, saving you time and simplifying your morning routine. Removable reservoir makes refilling easy.
  • PAUSE & POUR: Automatically pauses your coffee maker mid-brew for 20 seconds, allowing the carafe to be poured.
  • SIMPLE BUTTON CONTROLS: Just insert any K-Cup pod or ground coffee and use the button controls to brew a delicious cup and carafe.
  • BREW A CUP AND A CARAFE: Use both ground coffee and K-Cup pods.

K-Duo Essentials is the basic version of the K-Duo line. It does everything a Keurig K-Duo does, but for a more affordable price, it lacks a few options:

  • It doesn’t have a digital clock/timer.
  • It does not have a strong brew option.
  • It has less serving sizes: 8, 10 and 12 cups for carafe, or 8, 10 and 12 oz for single serving size.

Keurig K-Duo vs. K-Elite – What’s The Difference?

Sale
Keurig K-Elite Coffee Maker, Single Serve K-Cup Pod Coffee Brewer, With Iced Coffee Capability, Brushed Silver
  • Included in the box: A bonus 6 count k cup pod variety pack, one water filter handle, and one filter to help ensure your beverages taste their absolute best
  • Coffee in no time: Brews k-cup pods in under a minute.
  • Large 75 ounces water reservoir: Allows you to brew 8 cups before having to refill, saving you time and simplifying your morning routine; removable reservoir makes refilling easy
  • Removable drip tray: Accommodates travel mugs upto 7.2 inches tall and holds a full accidental brew for easy cleanup
  • Brewer maintenance reminder: Alerts you when it is time to descale your coffee maker; Descaling is an important process that removes built up calcium deposits, ensuring the best tasting brew possible

Keurig K-Elite is a great product, but it’s not comparable to the K-Duo line as it only brews single-serve cups, so it’s not a dual coffee maker.

If you want a Keurig machine that does single-serve only, the K-Elite is something to consider:

  • It has 5 serving sizes: 4, 6, 8, 10 and 12 oz.
  • Iced coffee setting which automatically adjusts the temperature and brew settings to brew a cup of coffee that won’t taste watered down when the iced melts.
  • Strong Brew option.
  • Hot water on demand.
  • Adjustable temperature.

Other Dual Coffee Makers to Consider:

While the K-Duo and K-Duo Plus are great, they’re not the first to implement the idea of dual coffee makers that have both carafe and pod brewing. There are solid options to choose from, click here to see our recommendations.

Keurig K-Duo vs. Keurig 2.0, Which Is Best?

While Keurig 2.0 does brew single cup and carafe, it did so using pods only. You had no option of brewing a carafe of coffee in the traditional way, which many people still preferred. Using K-Duo, you have the choice of brewing a carafe using your favorite brand of ground coffee, no pods necessary. And for single cup brewing, you can use any type of K-Cup pod, either by Keurig or from other brands (as long as they are K-Cup Pods, and not Vue, Rivo or K-Carafe, K-Mug).

Keurig K-Duo vs. Hamilton Beach FlexBrew:

Hamilton Beach Flexbrew is one of the earlier dual coffee makers that brew both full coffee pot as well as K-Cup pods. So it’s pretty much what the Keurig K-Duo does. But is there an actual difference between them? Which of them should you go for?

The Hamilton Beach FlexBrew (model 49976 to be exact) has a 12-cup pot side and a single serve side that can accommodate a cup or a travel mug. Much like the K-Duo, it is programmable, and it can brew 4, 6, 8, 10 or 12 cups of coffee. Here’s where they’re different…

  • The water reservoirs on the Hamilton Beach are separated for the single serve and full pot sides.
  • It includes a filter basket and adapter for the single serve brewing side that allows you to brew your coffee either using a K-Cup pod or ground coffee.
  • Using the Keurig K-Duo, if you choose to brew a single cup using ground coffee, you can do so using the Universal My K-Cup pod, which you’ll have to buy separately.

These two machines are pretty similar. However, it seems like – according to customer ratings – that the Hamilton Beach has some quality and longevity issues where the machine starts leaking few months in. So that’s one thing to keep in mind when making your choice.

Click here to learn more about the Hamilton Beach FlexBrew, read the customer reviews and buy it.

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