Keurig K50 vs Keurig K55: Whats The Difference?

The Keurig K50 vs K55. Whats the difference? They look like identical twins. At a first glance your not going to be able to tell much of a difference, but in fact there is, but how?

That’s why you’ve ended up here. We’ve compared them both to help draw up the main differences between the two, so you’ll be better informed to choose which one you want.

fresh coffee next to fire

What To Consider

You’ve got your eye on one of these coffee makers ey? Well, that’s a good thing. They’re good at making coffee, and many people think so. But is this coffee maker going to suit you?

They’re Single Serve

If you’re after a coffee maker that’s going to brew a large carafe of coffee each morning, then you’re probably best off looking for something else. The Keurig K50 and K55 have different brew sizes, but they’re all still single servings (6, 8, and 10 ounces).

If you’re not bothered about having an entire carafe each morning, and you’re happy with a couple of cups, then these will be ideal. Whenever you want a brew, you can pop in your favourite K Cup, and voila – a fresh brew.

If you’re after something slightly larger than a single serve, but smaller than a large carafe, try 5 cup coffee makers for a perfect middle ground.


They’re pretty compact coffee makers, so if you don’t have a lot of room in your kitchen, or office, then that’s not a problem. Make sure you take note of the exact measurements though. There’s nothing worse than buying your coffee maker, waiting for it to arrive in the post, and realising when it arrives, it’s too big.

If you’ve got a lot of room, you can maybe afford to go for something larger, like a coffee maker that can make more than just filter coffee. Check out the Keurig K Cafe if you like milky espresso based drinks, like cappuccinos or lattes.

A Quick Peak

Keurig K50

keurig k50 vs k55

The Keurig K50 is super user-friendly, with very easy to navigate buttons instead of an LCD screen. It was the first model out of the two to be released, and for a while they were out at the same time. The Keurig K50 has since been discontinued, but you can still purchase it from online retailers at the moment.

It includes a Strong Brew option which is ideal for those of us that like a bolder cuppa. An auto off feature turns the coffee maker off after 30 minutes, meaning its energy efficient. It also includes a 48 ounce water reservoir which allows you to brew about 6 or 7 cups at full capacity.

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Keurig K55

keurig k50 vs k55

The Keurig K55 is pretty similar to the K50 in many ways. It has the same 48 ounce reservoir, but is also compatible with Keurigs charcoal water filters. Charcoal is such a great material for water filters because it’s a natural, and effective at removing many toxins from water. It does this without the use of chemicals, which also remove salts and minerals that are good for us.

The K55 has a few more modern features. For example, it has a maintenance reminder which lets you know you need to descale your Keurig, which keeps your coffee flavourful and of top quality.

A light that flashes to let you know there isn’t enough water in the water reservoir for the desired cup size. Also energy efficient, as it turns off 2 hours after your last brew.

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Feature Comparison

Weight7.6 pounds11 pounds
Dimensions9.8 x 13 x 13.3 inches9.8 x 13 x 13.3 inches
Brew SpeedOne and a half minutesOne minute
Brewing Capacity6, 8, 10 ounces6, 8, 10 ounces
Auto Off FunctionYesYes
Water Reservoir48 ounces48 ounces
Drip TrayRemovableRemovable
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Firstly, it’s important to note that the brew speed in the table above is once the machine has warmed up properly. From switching it on first thing on a morning, it’s going to be around 5 minutes until you have your first cuppa. Still a good time, but your second and third cup are going to be closer to that one minute mark.

The K50 brews a coffee at around one and a half minutes, which is pretty quick. You have just enough time to put some toast in the toaster before your brew is ready for you. The K55 puts in a slightly quicker time of almost one minute exact, so not much of a difference there.

The brew temperature for both machines are 89°C, which is between the ideal temperatures to brew coffee.

When it comes to the filters of each machine, this is where the difference in performance lies. With the K50, you have a standard mesh reusable filter, which isn’t the best quality. You will probably find yourself replacing after not much time.

The K55 on the other hand has those charcoal filters we mentioned above. Because of the benefits you get with charcoal, you notice the difference in your coffee. It’s that bit smoother and flavourful. Now, you pay for what you get, the price of charcoal filters are slightly more expensive, so whether the extra smoothness and flavour justify the price, that’s up to you.

coffee finished being poured from coffee machine


The taste for both machines is good, and almost exactly the same. We couldn’t really tell much of a difference. The only thing you do notice is that slight texture change from the charcoal filter in the K55, but that’s about it.

It highly depends on what K Cups you use. You can get some good K Cup brands, with exceptionally tasting coffee, and you can also use a reusable K Cup to explore ground coffee.

With the choice of different brew volumes, you can choose your strength, which is a highlight of both machines. For instance, if you have a friend that likes their coffee super strong, no worries, simply use less water with the same amount of coffee. Or even more so, if you’re using a reusable K Cup, you can fill that up as much as you like to create the desired brew strength.

Both machines produce good tasting cuppas, so I don’t think taste is going to be a deciding factor on which one’s best.

Cleaning and Maintenance

Because this is such an under-rated but important part of every coffee lover’s routine, it’s an important topic to cover when looking for a good coffee maker. Keeping yours clean means your coffee is going to be consistently extracting all the flavours out of the coffee, so you get the most out of every cup.

Descaling your Keurig, is an annoying, but necessary thing to do. With the K55 having a warning to remind you to do it, you’re not going to forget. For those of you leaning towards the K50, it’s going to be important to remember to do it once every 3 to 6 months, depending on what water you use.

Water with a higher concentration of bicarbonate or calcium causes scale to build up much more rapidly than water with lower concentrations.

Both Keurigs come with a removable water reservoir, which makes refilling it much, much easier. If you have ever had one with a water reservoir that doesn’t detach, then you know it can be a little awkward, and can sometimes result with water over the counter.

Also, the removable drip tray also makes cleaning it easier too, and means giving it a rinse out happens much more often.


Weighing in slightly heavier is the K50, by a few pounds. The dimensions are pretty much identical though, so they’re going to take up the same amount of room in your kitchen.

They’re not super bulky machines, but they’re also not overly compact like some of the other K Cup brewers out there. Mostly made of plastic, their build quality is okay. They feel sturdy, but upon a closer inspection you can see that they aren’t made of the best quality materials.

The design of the buttons on the top of the machine are easy to use and aesthetically pleasing, especially with the blue light underneath the cup size. Some coffee makers like to overcomplicate things with a big LCD screen and different buttons, but I really like the user interface with these machines.


Our final point is the durability of the machine. This is important because we don’t want to be buying a coffee maker every few months. These things aren’t cheap, so if you buy one, you’re going to want it to stand the test of time.

The K50 and the K55 both come with Keurigs one year warranty. Most of the time, if anything is going to break due to manufacturing faults, then it’s going to happen within the first year. That being said, we have had some reports of their Keurigs breaking after a year or so, which isn’t too long. However, these reports are few and far between, and the majority of Keurigs last a long time.

2 espresso shots being poured at the same time

The Pros, and The Cons

Keurig K50


  • Brews fast coffee
  • Easy user interface
  • Strong brew option
  • 6, 8 and 10 ounce serving size
  • Auto-off feature
  • Removable water reservoir
  • 1 year warranty
  • Removable drip tray


  • Slower to brew coffee than K55
  • No descale reminder
  • More instances of breaking down

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Keurig K55


  • Brews coffee in a minute
  • Easy user interface
  • Charcoal water filter
  • Descale reminder
  • 6, 8, and 10 ounce serving size
  • Auto-off feature
  • Removable water reservoir
  • 1 year warranty
  • Removable drip tray


  • No brew strength option

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The Verdict

The main thing to take away from this article, is that there really isn’t much difference between the two Keurigs. The K55 is basically the newer, and slightly upgraded version of the K50.

If I had to choose between the two, I’d go for the K55, for the simple reason that it does everything the K50 does, with a better filter, and seems to be slightly more reliable.

That being said, the only thing that the K50 has that the K55 doesn’t, is the brew strength feature.

In a nutshell, to me the Keurig K55 seems to be the better coffee maker, what do you think?

You can find more Keurig reviews to help continue your search!

Let us know which one you went for in the comments!

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Tom Bolland

Tom Bolland

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