Keurig Duo vs Duo Plus Showdown: Discover the Ultimate Coffee Maker for Your Morning Routine

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This is our comparison review of the Keurig Duo vs Duo Plus coffee makers.

Here’s the verdict for those of you who don’t want to read the whole article:

Our winner is the K-Duo Plus. We think it’s a better product than the K-Duo, as it offers more convenience, functionality, and quality, although it’s also more expensive. Overall, the K-Duo Plus is an improvement on the K-Duo.

Buy the K-Duo Plus on Amazon.

Keurig K-Duo Single Serve K-Cup Pod & Carafe Coffee Maker, Black


Keurig® K-Duo Plus™ Single Serve & Carafe Coffee Maker

K-Duo Plus




Ease of use









Value for money



Want more details?

The next section gives a quick rundown of both coffee makers and the section after that will detail the metrics we used to rate them.

Keurig Duo vs Duo Plus: At a Glance

OK let’s get into it. First up is the Keurig K-Duo.

Keurig K-Duo

The Keurig K-Duo Coffee Maker is a dual-function coffee machine that can brew single-serve pods or ground coffee in a carafe.

It has a 60 oz water reservoir, a brew strength button, a pause and pour feature, and a heating plate.

Some reviews online mention poor water distribution, weak coffee, confusing interface, and low brewing temperature. Personally, we didn’t notice these problems.

The K-Duo doesn’t come with a water filter kit.

Next, let’s quickly outline the K-Duo Plus.

Keurig K-Duo Plus

The Keurig K-Duo Plus is a similar product, but with some improvements.

It has a swivel water reservoir that can be positioned on the side or the back of the machine, a thermal carafe that keeps the coffee warm for longer, and a more sleek and modern design.

The product also has the same features as the K-Duo, such as brew strength, pause and pour, and auto-on/off. Some reviewers have complained that the carafe pour spout tends to drip.

Keurig K-Duo vs K-Duo Plus: Head to Head Comparison

keurig duo vs duo plus

OK… let’s dive into our metrics. First up is performance.


We found that both the K-Duo Plus and K-Duo brew k-cups in the same amount of time, just under two minutes for an 8 oz cup.

For a full pot of coffee, they both brew in about 8 minutes, faster than traditional coffee makers.

We also tested the temperature of coffee from both and found it to be around 160 degrees F, indicating they heat water to similar temperatures.

Finally, we did a taste test and found no discernible difference between coffee from the two machines. So their performance in brewing speed, temperature, and taste is essentially identical.

Winner: It’s a tie!

Ease of Use

The control panels function the same way on both machines – you select k-cup or pot, then select brew size. They are equally easy to operate.

But the K-Duo Plus has a much larger water reservoir with an easy to grip handle. It’s very simple to remove and refill.

The K-Duo’s reservoir is a little more awkward with no handle.

The K-Duo Plus also allows you to move the water reservoir to the back or side for a smaller footprint. The K-Duo’s reservoir is fixed in the front.

Overall, the K-Duo Plus’s reservoir makes it slightly more convenient and easier to use.

Winner: K-Duo Plus


The K-Duo Plus has a more sleek and modern design with rounded corners and no warming plate. This gives it a smaller footprint.

On the other hand, the K-Duo has a more traditional coffee maker design with a glass carafe and warming plate that stays on for 2 hours.

The K-Duo Plus can accommodate travel mugs up to 7.75″ tall. The K-Duo fits the same size mugs.

The Plus model seems to use higher quality materials and parts. The K-Duo has some plastic pieces that make it feel cheaper.

Overall, the K-Duo Plus has a more premium and versatile design.

Winner: K-Duo Plus


Both allow you to brew a single cup or a full pot in various sizes. They can be programmed to start brewing at a certain time.

The K-Duo Plus lacks a warming plate, instead using an insulated thermal carafe to keep coffee hot.

The K-Duo has a warming plate that stays on for 2 hours after brewing. This ensures the coffee stays hot but uses more electricity.

The K-Duo Plus is described as being slightly quieter when brewing.

Overall the features are very similar, with the warming plate being the main difference. But we’re giving the edge to the K-Duo.

Winner: K-Duo

Value for Money

The K-Duo Plus costs a little more than the K-Duo.

Considering its advantages in design, ease of use, noise level, and quality, we feel the K-Duo Plus is worth the extra cost.

The K-Duo gets you comparable performance and features for less money, but it’s a slight step down in quality from the Plus model.

So the Plus represents a modestly better value for those who want a more refined product, while the K-Duo is better value for budget-conscious buyers.

Winner: K-Duo Plus

Overall Winner: The Keurig K-Duo Plus

Both models are solid. But our overall winner for this comparison is the Keurig K-Duo Plus.

In comparing the Keurig K-Duo and K-Duo Plus, both models offer similar brewing capabilities, accommodating both K-Cups and standard coffee grounds for up to 12 cups.

The main distinctions lie in their design, footprint, and additional features.

The K-Duo Plus, with its higher price point, boasts a more compact design, superior water reservoir, and versatility with the ability to adjust the position of the water tank.

Despite its slightly larger size, the K-Duo offers a traditional coffee pot with a warming plate.

The K-Duo Plus is the better machine overall, due to its refined features and efficient use of space, making it a preferable choice for those valuing premium quality and versatility in their coffee maker.

Our Testing Process

breville barista express vs pro

We test all of our coffee makers using the same process and criteria.

Our process of reviewing coffee and coffee makers involves several steps.

We start by doing comprehensive online research to get information from various sources such as official product websites, blogs, and press releases to understand the product’s specifications and purpose.

After this, we look at customer reviews on e-commerce websites, forums, and social media to assess overall satisfaction and identify common issues.

The product is then compared with its competitors to evaluate its features, pricing, and performance for better market positioning insights.

Whenever possible, personal testing or hands-on experience is obtained to gain practical insights into the product’s usability and quality.

Check out how we review products in more detail.

Keurig Duo vs Duo Plus: Decision Time

Hopefully you now have everything you need to make an informed decision.

Our winner is the Keurig K-Duo Plus. It’s a better product with a more refined design and its easier to use. Yes, the Duo Plus is a little more expensive but you get better value for money. The K-Duo costs less while still delivering comparable performance and features.

If you’re dead set on Keurig and want a less expensive coffee maker, check out our Keurig K-Mini review and our best coffee maker under $100 roundup.

Check the price of the Keurig K-Duo Plus on Amazon by clicking the button below.

Buy Keurig K-Duo Plus

Frequently Asked Questions

What is the difference between Keurig Duo and Duo Plus?

The K-Duo Plus is considered the superior model with a more premium design and easier to use water reservoir. But it costs more than the very similar K-Duo, which lacks some refinement but still delivers great performance and features for a lower price point.

Is Keurig K-Duo Plus worth it?

The Keurig K-Duo Plus is worth the extra cash due to its more premium design, easier to use water reservoir, quieter operation, and versatility, providing a better long-term coffee making experience.

How long should a Keurig Duo last?

Most customers report Keurig coffee makers lasting between 3-5 years.

Which Keurig is the best for home use?

Some of the best Keurig coffee makers for home use include the K-Slim, K-Mini, K-Duo, and K-Duo Plus. These models are inexpensively priced and are terrific for casual coffee lovers.

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My name is Colm O’Regan. I’m a self-confessed coffee nut who probably drinks a little too much of the stuff every morning. And I founded Moderno Coffee with the goal of providing the best coffee guides and reviews on the web.