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Keurig K-Duo Review

Access the convience of pod brewing or drip coffee making with this convertable-style brewer
Keurig K-Duo
Credit: Keurig
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Price:   $190 List | $139.99 at Amazon
Pros:  Brews pods and ground coffee, detachable water tank
Cons:  Poor water distribution, weak coffee, confusing interface
Manufacturer:   Keurig
By Liz Nelson ⋅ Review Editor  ⋅  Apr 29, 2022
Our Editors independently research, test, and rate the best products. We only make money if you purchase a product through our links, and we never accept free products from manufacturers. Learn more
49
OVERALL
SCORE


RANKED
#12 of 13
  • Brew Quality - 30% 3.7
  • User Friendliness - 35% 6.3
  • Ease of Cleaning - 20% 5.2
  • Consistency - 15% 3.5

Our Verdict

If you cannot choose between a pod-brewer or a drip coffee maker, the Keurig K-Duo gives you the flexibility to do both. However, we found the brew quality is compromised in this convertible brewer. Proper brew temperature and effective water distribution are key elements in preparing a good cup of coffee. The K-Duo does not reach the industry standard for water temperature, nor is it capable of an even water distribution from its spray head. This brewer makes subpar coffee at a high price.

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Price $190 List
$139.99 at Amazon
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Overall Score Sort Icon
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Pros Brews pods and ground coffee, detachable water tankEasy cleaning, simple design, can use podsInexpensive, automatic brew featureEasy to use, almost no cleaning, barcode reader, water tank swivelsSimplistic interface, easy to clean
Cons Poor water distribution, weak coffee, confusing interfaceSmall water tank opening, fill to brew volumeHard to fill, bulkyPods are expensive, requires specific pod, lacks brew qualityPoor brew quality, no automatic shut off, short carafe handle
Bottom Line Access the convience of pod brewing or drip coffee making with this convertable-style brewerThe combination of features and affordability make this a great budget optionThe most affordable and straightforward coffee maker that consistently brews decent coffeeAn excellent choice for those who appreciate an appliance with single-button simplicityA decent budget option if you like the simplicity of a single-button brewer
Rating Categories Keurig K-Duo Hamilton Beach 2-Way Black+Decker 12-Cup... Nespresso VertuoPlus Mr. Simple Brew 12-...
Brew Quality (30%)
3.7
6.0
5.6
4.7
4.4
User Friendliness (35%)
6.3
6.3
5.1
6.2
4.3
Ease of Cleaning (20%)
5.2
7.5
6.0
7.4
7.3
Consistency (15%)
3.5
6.5
7.1
3.5
7.1
Specs Keurig K-Duo Hamilton Beach 2-Way Black+Decker 12-Cup... Nespresso VertuoPlus Mr. Simple Brew 12-...
Cup Capacity 12 12 12 1 12
Single Serve Yes Yes No Yes No
Automatic Brewing Yes Yes Yes No No
Brew Temp (°F) 159.88 166.14 161.98 167.9 160.36
Preinfusion No No No Yes, not adjustable No
Filter Shape Flat, pod Flat Flat Pod Flat
Energy Usage 1470 watts 950 watts 975 watts 1350 watts 975 watts
Dimensions (H x W x D) 13" x 11" x 12.8" 13.9" x 12.2" x 11.1" 8.2" x 12.2" x 11" 12.8" x 8.7" x 12.7" 12.3" x 9.3" x 13.8"
Weight 10.7 lbs 5.0 lbs 4.75 lbs 10.1 lbs 2.8 lbs

Our Analysis and Test Results

Above all else, the Keurig K-Duo provides the flexibility to brew with pods or ground coffee. However, brew quality is compromised in this convertible model. We were disappointed that the Duo seemed to underperform in most metrics compared to the others in our lineup. However, we did find that it was just slightly above average in its ease of use, although it should be noted that one must read the manual thoroughly before diving in headfirst.

Performance Comparison


Keurig K-Duo coffee maker - the keurig k-duo convertible brewer with the option of the pod or...
The Keurig K-Duo convertible brewer with the option of the pod or batch brewing.
Credit: Laura Casner

Brew Quality


The flexibility of brewing with the K-Duo means you do not have to choose between a pod brewer or drip brewer, and it does both. The Keurig K-Duo brews at the default temperature of 179 degrees. This temperature is much lower than the industry standard. Precise brewing temperature is essential for proper extraction and cup quality. Equally as important is an even water distribution. After examining the brew basket post-brewing, the grounds appear to be pulled inward and away from the side of the brew basket. Without pre-infusion or an effective spray head, the K-Duo cannot produce an even saturation or, otherwise — a decent cup of coffee.

Keurig K-Duo coffee maker - unfortunately, the k-duo spray head does not do an effective job of...
Unfortunately, the K-Duo spray head does not do an effective job of evenly saturating the coffee.
Credit: Laura Casner

User Friendliness


Pod-style brewers are typically easy to use; however, we found the interface of this brewer quite confusing. The Keurig K-Duo is programmable and even makes an adjustment for high altitude brewing. Additional features include a strong brew button, pause & pour, and a brew & pause setting that actually stops the brewing process. If you brew an entire pot of coffee, you can take your time drinking it because the K-Duo efficiently keeps your coffee warm even two hours after brewing.

Keurig K-Duo coffee maker - the keurig-duo interface is slightly confusing at first.
The Keurig-Duo interface is slightly confusing at first.
Credit: Laura Casner

Ease of Cleaning


Generally, pod brewers are easy to clean and keep clean. However, the K-Duo isn't the best. Unlike some other coffee makers, none of the Keurig K-Duo components are dishwasher safe. The brew filter is easy to rinse and clean but the carafe and filter basket need to be cleaned by hand. The pour assists on the carafe also limit accessibility for cleaning. Cleaning the outside of the K-Duo is straightforward at least. The smooth and dark exterior hides fingerprints and is super easy to wipe clean.

Keurig K-Duo coffee maker - without any difficult little crevices, the k-duo is straightforward...
Without any difficult little crevices, the K-Duo is straightforward to wipe down.
Credit: Laura Casner

Consistency


The K-Duo did not do well when it came to consistency. Our testing shows that this coffee maker is not designed to brew multiple batches of coffee consecutively. This brewer could satisfy a single person or a household that does not consume more than one pot a day. The Keurig K-Duo is not capable of back-to-back brewing without significantly losing water temperature. If you are making multiple batches of coffee in the morning, give the brewer some time to warm back up between brews.

Keurig K-Duo coffee maker - to test the consistency of the k-duo brewer we consecutively brewed...
To test the consistency of the K-Duo brewer we consecutively brewed five batches of coffee and measured the results.
Credit: Laura Casner

Value


The Keurig K-Duo is quite pricey. If cost suggested quality, then we could justify buying this machine. However, due to the low quality of coffee made with this brewer, we suggest looking at some of the other high-performing products in the review.

Keurig K-Duo coffee maker
Credit: Laura Casner

Conclusion


The Keurig K-Duo provides the convenience of a pod brewer or drip coffee maker in one appliance. However, K-Duo lacks the temperatures and proper water distribution required to brew great coffee. This model makes below-average coffee at a high price. If you are looking for a convertible brewer with better cup quality, we suggest looking at other higher-quality coffee makers in our review.

Liz Nelson
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