Keurig K-Classic [K55] Coffee Maker Review 2021

The Keurig K55, also called the K-Classic, is an iconic Keurig single-serving coffee maker. It features a minimalist control panel, a large water reservoir, and multiple brew sizes. The brewer comes in any color you want, as long as it’s black (or red). While it is on the larger side of single-serving coffee makers, it is the perfect brewer for any number of venues from an upscale office to a studio apartment. If you’re looking for a no-frills way to get into brewing single-serving coffee, look no further than the Keurig K-classic.

In this review, you’ll find everything you’re looking for to help you decide if the K55 is for you.

Keurig K-Classic Coffee Maker Review




The size of the Keurig K-Classic is a bit bigger than the other Keurig models, taking up approximately 10.1 inches by 13.2 inches of counter space. You’ll want to make sure you have at least 17.6 inches of clearance under your cabinets so that you can fully open the brew head. When the brewer is closed, it’s around 13.3 inches tall.

The design of Keurig K55 features excellence in quality with its large water tank, easy use interface and removable drip tray.

The design is compact and elegant enough to suit your kitchen’s theme. Moreover, the interface is simple to operate so that everyone can use the machine with convenience.


Keurig K-Classic Coffee Maker


The K-Classic is compatible with all K-Cup brand coffee pods, allowing you to choose coffee blends from a variety of well-known names in coffee market. You’ll have endless coffee flavors to explore and can rest assure that your favorite coffee likely comes in a K-Cup.

K55 is capable of brewing multiple brew cup sizes. You can pick from 6, 8, or even 10 oz. cups of coffee. All you have to do is insert a K-cup, select the button corresponding to the size you want, and a delicious, freshly brewed coffee will be ready for you in under a minute.

It features a 48oz large water reservoir, which allows you to brew at least 6 or more cups of coffee before needing to refill it. This will get you easily through your work week and then some. The reservoir size is perfect for a week for a person who wants one cup of coffee daily.

The interface of this K-Classic is easy to use and offers exceptionally simple use. There are only five buttons. Three of them are for selecting the size of the coffee, one is for powering on & off the device, and the last one is for enabling the “Auto Off” feature.

Auto-off ensures power saving by turning off the machine when it’s not in use from a specific time. This feature is great for those who seem to be in a perpetual hurry and have a habit of forgetting to turn off their kitchen appliances.


The control panel also has several LED indicators, making it easy to tell when it’s time to add water or de-scale the brewer. That indicator feature weighs up the durability of the machine by keeping its user aware of required maintenance.

It can also fill up your travel mugs, all you have to do is remove the drip tray at the base of the machine and you can brew into travel mugs up to 7.1 inches tall.

Cleaning the Keurig K55 is a breeze. You’ll want to be sure to keep it clean and follow all maintenance procedures from the manual to ensure your brewer performs at its best for years to come.

The drip tray is removable, so you can easily dump it out in the sink when it gets full. Over time, you may find that some coffee residue builds up in the drip tray. Thankfully, the drip tray is top-rack dishwasher safe.

Descaling is an important part of maintaining any coffee maker. Using for years, the machine will build up calcium deposits on the internal components. To make sure your cup of coffee isn’t impacted by the buildup, you’ll want to descale your machine on a frequency outlined in the manual. It’s best to use Keurig’s descaling solution to make sure the internal components stay good as new over time.

The Keurig K-55 comes with two water filters to get you started. They are easy to install in the water tank and should be changed every 60 days to ensure your Keurig continues brewing delicious coffee.



  • Multiple brew sizes

  • 6, 8, and 10-ounce cups of coffee

  • 48 oz. water tank

  • Minimalist user interface

  • Easy to clean

  • Accommodates travel mugs

  • Strength and temperature settings

  • Removable drip tray

  • a pretty large coffee maker

  • Unsophisticated user interface

  • No strong mode

  • Few color choices

  • A bit noisy

Our Verdict:

The Keurig K55 is the perfect addition to any kitchen, big or small. It’s a mid-sized machine that is capable of brewing any K-Cup brand on the market, opening up a wide range of coffee and tea options. It comes in only two colors, rhubarb and black, but both blend in with nearly any kitchen design. It’s a great machine for those looking to switch over from their old-fashioned Bunn drip coffee maker to a sleek, new way of brewing coffee. It’s very reasonably priced for the quality of the system. It doesn’t have all the bells and whistles of higher-end Keurig machines, but still brews that delicious cup of joy you starve for in the morning. Also, its features are good enough to impress any user. So, we highly recommend the Keurig Classic as an introductory machine for the office or home use. Great Keurig Coffee Maker Collections

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