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Keurig K-Classic Coffee Maker Review

Our Rating: 4/5

Keurig K-Classic (aka Keurig K55)


  • Suitable for 6, 8, and 10-ounce cups
  • Removable drip tray and water reservoir
  • Energy-saving auto-off function
  • Indicator lights
  • Descale function for easy cleaning
  • Iced coffee option
  • No heating time
  • Design
  • Functionality
  • Price

Our Rating: 4/5

Keurig K-Classic (aka Keurig K55)


  • Suitable for 6, 8, and 10-ounce cups
  • Removable drip tray and water reservoir
  • Energy-saving auto-off function
  • Indicator lights
  • Descale function for easy cleaning
  • Iced coffee option
  • No heating time
  • Design
  • Functionality
  • Price

Keurig K-Classic Coffee Maker Review Summary

If the Keurig K55 looks familiar, that’s because it’s the next generation of Keurig’s popular K50. Although these models are similar, the K55 improves upon an established favorite. The K55 is larger and heavier than its predecessor, but it’s also faster, more sophisticated, and easier to use.

Perhaps it’s no surprise that the Keurig K55 is a hit — the very same company brought us brands including Dr Pepper Schweppes, Kahlua, Evian, and Cinnabon coffee, after all.

Convenience is a highlight of the Keurig K-Classic. Perhaps the best example of this is its speed — you can have a fresh cup in 60 seconds or less. The 48-ounce reservoir minimizes refills, making it truly a machine that’s always ready to go.

Indicator lights, a descaling function, removable drip tray, and the auto-off are testament to how effortless the Keurig K-Classic coffee maker is. It’s easy to navigate straight out of the box, and it won’t chew through electricity or cost you energy in cleaning time.

Not limited to coffee, the Keurig K55 can whip up tea, cocoa, plain hot water, and specialty drinks too. It’s an all-rounder that stands alone, eliminating the need for other appliances.


  • Brews coffee in under a minute
  • Easy to clean and maintain
  • Energy-saving
  • Intuitive design, indicator lights included
  • Makes tea, cocoa, and other drinks in addition to coffee


    • It’s noisy, especially when new
    • Adjusting brew strength isn’t the easiest task
    • Despite the descaling feature, it clogs easily

    Features and Benefits of the Keurig K55 Coffee Maker

    The Keurig K55 stands out in both concept and practice. Its popularity is justified by its capability, as this really is a coffee maker that everyone can enjoy.

    Here’s why you should consider the Keurig K-Classic, and why it’s a worthy choice over other coffee makers.

    Super Speedy Coffee

    Do you know what’s better than coffee? Fast coffee. 

    One of, if not the best feature, of the K55 is how quickly it will prepare your joe. In less than a minute, to be exact. This is a great feature in general, because who enjoys waiting for coffee? But it’s extra beneficial for those in a hurry, and those who enjoy coffee on the go.

    Variety In Compatibility

    It goes without saying that for best results, you’d do well to use the K-Cup Classic cups, but you don’t have to, and that’s what matters. Although many generic pods won’t work as they won’t fit in your Keurig, you can take advantage of the many generic coffee cups compatible with this machine.

    This coffee maker will brew grounds too, though it’s worth noting that you need to invest in a My K-Cup Reusable Coffee Filter to use this function.

    Your choice of 6, 8, or 10-ounce brews also adds a touch of versatility you’ll appreciate on the days you need more or less caffeine than normal. Even though the Keurig K-Classic doesn’t give you a choice when it comes to brew strength, there is a loophole: the smaller the cup, the more concentrated the coffee. Go ahead and select the six-ounce option if you’re looking for a flavor and strength boost.

    Not Just A Coffee Maker

    This nifty machine will brew whichever cups fit in it, including tea, hot chocolate, and even iced drinks. The K55 can boil water too, although, with all the other delicious options, you might not use this function!

    Effortless Maintenance And Results

    The power of the K-Classic’s descaling function is to be lauded. Regular descaling ensures your machine brews the tastiest coffee it can, and preserves the coffee maker’s lifespan. Clever descaling, combined with the unit intuitive design, means maintenance won’t be a hassle.

    In the same vein, its removable components (drip tray and reservoir) are easy to work with when it’s cleaning time. Not to mention that the reservoir’s size means fewer refills are needed.

    Eminently Easy To Use

    For the technologically disadvantaged coffee aficionados out there, I must emphasize how easy this machine is to use. There’s little set-up involved here, and in the rare instances when manual effort is required, it’s quick and easy.

    All the Keurig K55’s functions are clearly labeled and placed in such a way that error is unlikely. The main buttons, which get your brew started, are visually marked, and vary in size corresponding to the cup size you’d like.

    Here’s how you make coffee with this machine: Insert your K-Cup, select your desired size… and that’s it. The machine will do the rest.

    The indicator lights feel almost fanciful considering how instinctive the K55 is, but they’re a great addition that adds to the user-friendliness regardless. When your reservoir needs filling, it will light up to alert you.

    Keurig left no stone unturned when designing the K55 and it shows. You don’t have to be tech-savvy to find your way around this coffee maker, and rest assured, no shortcuts were taken when Keurig designed this coffee maker.


    You don’t have to think about turning the Keurig K55 off because it’s smart enough to switch itself off. Two hours after your last brew, if it’s still on, the machine will shut down automatically.

    If you’re the forgetful sort who’s always on the move, this is one less thing to worry about. As a bonus, you’ll save money on your electricity bill too.

    Takes A Variety Of Mugs

    This machine is tall enough for all your favorite mugs and cups without being cumbersome or chunky. The biggest benefit here is that it will easily accept travel mugs, once more proving that Keurig covered all bases and shone a light on convenience.

    Great Design

    Sure, this benefit might not be as important as the others, but the Keurig K55 looks nice. It’s not the most dashing coffee maker on the market, but it’ll fit into your kitchen well. The simplistic, minimalist design has its appeal, and it won’t take up much bench space either.

    You can choose between two colors: black and rhubarb, both of which are easy on the eyes, though the latter adds more character to your counter.

    What Do Users Say About the Keurig K-Classic Coffee Maker?

    I’m impressed by the features, function, and design of the Keurig K-Classic. And judging by what I know, there’s little to complain about. But what do buyers have to say?

    The ratings for this coffee maker are stellar. A bestseller, the vast majority of users rate it as one of the best coffee makers on the market.

    Fans praise its durability and many say they’ve had their K55 for years without incident. Users love how fast and easy it is to use, noting that it’s both hassle and mess-free. 

    It’s also worth mentioning that most buyers compliment Keurig’s customer service, and describe how pleasant the company is to deal with when issues arise.

    On the flip side, dissatisfied customers mention the noise, and claim that the K55 clogs easily despite the descale function. Contrary to the majority, some have complaints that the K55 disappointed in durability. Another discrepancy, though purely subjective, is that the plastic cups taint the coffee’s taste.

    All in all, good feedback outweighs the bad.

    Alternatives To The Keurig K-Classic 

    The proof really is in the pudding when it comes to the Keurig K-Classic coffee maker, but you may still have doubts. Perhaps, for the money you’re spending you want a higher-end model or one with eco-credentials?

    For whichever reason, if you’re not sold on the K55, here are your next best choices.

    If you don’t mind paying more, take a look at the Nespresso Vertuo. While it’s more than double the cost of the K55, you do get double, maybe even triple, the functionality.

    This model is better suited to those looking for a sophisticated coffee experience. You’ll get a range of top-class coffees out of this one, all at the single touch of a button.

    Five cup sizes (1.3, 2.7, 5, 8, and 14-ounce)

    Recognizes pod brands and brews coffee accordingly

    Dispenses hot or cold milk froth

    Keurig’s K55 might not suit the eco-conscious coffee fan. Since the plastic K-Cups are not biodegradable, it’s not really a green choice. If this is problematic for you, look at the Lavazza Blue Espresso Machine.

    It’s specifically for espressos, so it won’t give you the full range of coffees that other machines will, but Lavazza eco pods are 100% compostable, so you can enjoy your coffee guilt-free.

    Programmable brewing

    Compact design

    Adjustable cup size


    The Keurig K55 may not be the most advanced coffee maker out there, but what it lacks in sophistication it makes up for in speed and ease of use. Considering its price point, the unit’s functionality and quality coffee are exceptional.

    It’s an excellent choice if you’re looking for a simple machine that works fast and reliably. The Keurig K55 will save you a lot of time and effort in the mornings, and, thanks to its energy-saving properties, might spare you a buck or two as well.

    Keurig K-Classic Coffee Maker FAQs

    Can I Use Any Pod in the Keurig K55?

    Yes and no. Keurig produces its own, dedicated coffee capsules called K-Cups. While it’s better to use K-Cups in your K55, there are generic coffee cups that will fit in your machine. Coffee pods, unfortunately, will not.

    Does the Keurig K55 Have a Water Filter?

    Yes, the K55 has a water filter. This works in tandem with the descaling function to make your coffee crisper, cleaner, and healthier.

    Is the Keurig K55 Better Than the K50?

    Objectively, yes it is. The K55 has better specs, runs faster, and includes features such as descaling, automatic functions, and water filter compatibility. It’s also more durable.