Keurig K-Slim Single Serve Coffee Maker Review

The slimmest Keurig, for counters with no room to spare

Counter space is the reason to look at the Keurig K-Slim, a single serve pod coffee machine under 5 inches wide that still holds enough water for several mugs. It keeps to three cup sizes and little else, so the question is whether you will miss the settings that wider Keurigs add.

Spec-led review. Built from the manufacturer’s published specification and price rather than hands-on testing. Figures we could not find stated are left blank instead of estimated. Updated when we get one in.

Where you can buy itUS confirmed

Confirmed on Amazon US, which is where this link points. Availability in other Amazon stores has not been checked, and a regional store may substitute a different product.

Our rating
6.3/ 10
Decent
8 of 8 scored, out of 95.5 points · 4.5 not judgeable from specs

How we rate pod & capsule machines : what each criterion measures, and what we cannot.

Drink Quality (pump pressure not published)5.7 / 10
worth 13.5 of 95.5 · 4.5 unpublished · partly evidenced
how we got 5.7

what this measures, and what we cannot

What it was scored onScored from specs that predict this rather than measure it. 67% published.
Pump pressurenot published in this category—
Capsule systemK-Cup pods, plus the My K-Cup universal coffee filter for ground coffee1.5 / 3.0
Milk systemnot in our data1.25 / 2.5
Drink sizes8, 10 and 12 oz1.5 / 2.0

The rows that apply here are worth 7.5 between them and this one took 4.25, which is 5.7 out of 10. That 0 to 10 result is what the criterion's 13.5 of 95.5 points are then scaled by.

The 2.5 points we could not find a figure for are scored at the middle of the scale rather than as a zero, which awards 1.25 of them: the greyed figures above. We will not guess a specification and we will not mark the product down for our own missing research.

Capsule System & Choice6.8 / 10
worth 16 of 95.5 · thinly evidenced
how we got 6.8

what this measures, and what we cannot

What it was scored onScored from the specs the maker publishes. 35% published.
Not locked to one suppliernot in our data1.5 / 3.0
Third-party capsulesnot in our data1.75 / 3.5
Reusable capsuleYes, the My K-Cup universal coffee filter, sold separately3.5 / 3.5

The rows that apply here are worth 10.0 between them and this one took 6.75, which is 6.8 out of 10. That 0 to 10 result is what the criterion's 16 of 95.5 points are then scaled by.

The 6.5 points we could not find a figure for are scored at the middle of the scale rather than as a zero, which awards 3.25 of them: the greyed figures above. We will not guess a specification and we will not mark the product down for our own missing research.

Running Cost Per Cup6.2 / 10
worth 16 of 95.5 · thinly evidenced
how we got 6.2

what this measures, and what we cannot

What it was scored onScored from the specs the maker publishes. 25% published.
Cost per cupnot in our data2.5 / 5.0
Cheaper third-party podsnot in our data1.25 / 2.5
Refillable optionYes, the My K-Cup universal coffee filter, sold separately2.5 / 2.5

The rows that apply here are worth 10.0 between them and this one took 6.25, which is 6.2 out of 10. That 0 to 10 result is what the criterion's 16 of 95.5 points are then scaled by.

The 7.5 points we could not find a figure for are scored at the middle of the scale rather than as a zero, which awards 3.75 of them: the greyed figures above. We will not guess a specification and we will not mark the product down for our own missing research.

Ease of Use & Speed6.8 / 10
worth 12 of 95.5 · partly evidenced
how we got 6.8

what this measures, and what we cannot

What it was scored onScored from the specs the maker publishes. 50% published.
Warm-upnot in our data1.5 / 3.0
Auto shut-offYes, 5 minutes after the last brew2.0 / 2.0
Drink sizes8, 10 and 12 oz2.25 / 3.0
Milk frothernot in our data1.0 / 2.0

The rows that apply here are worth 10.0 between them and this one took 6.75, which is 6.8 out of 10. That 0 to 10 result is what the criterion's 12 of 95.5 points are then scaled by.

The 5.0 points we could not find a figure for are scored at the middle of the scale rather than as a zero, which awards 2.5 of them: the greyed figures above. We will not guess a specification and we will not mark the product down for our own missing research.

Build Quality & Reliability5.5 / 10
worth 12 of 95.5 · thinly evidenced
how we got 5.5

what this measures, and what we cannot

What it was scored onScored from specs that predict this rather than measure it. 30% published.
Weight2.82, published as 6.22 lbs2.0 / 3.0
Warrantynot in our data2.0 / 4.0
Capsule binnot in our data1.5 / 3.0

The rows that apply here are worth 10.0 between them and this one took 5.5, which is 5.5 out of 10. That 0 to 10 result is what the criterion's 12 of 95.5 points are then scaled by.

The 7.0 points we could not find a figure for are scored at the middle of the scale rather than as a zero, which awards 3.5 of them: the greyed figures above. We will not guess a specification and we will not mark the product down for our own missing research.

Maintenance & Cleaning6.9 / 10
worth 8 of 95.5 · thinly evidenced
how we got 6.9

what this measures, and what we cannot

What it was scored onScored from the specs the maker publishes. 38% published.
No descaling programme needednot in our data1.0 / 2.0
Tank1.36, published as a removable 46 oz reservoir3.0 / 3.0
Capsule binnot in our data1.5 / 3.0

The rows that apply here are worth 8.0 between them and this one took 5.5, which is 6.9 out of 10. That 0 to 10 result is what the criterion's 8 of 95.5 points are then scaled by.

The 5.0 points we could not find a figure for are scored at the middle of the scale rather than as a zero, which awards 2.5 of them: the greyed figures above. We will not guess a specification and we will not mark the product down for our own missing research.

Machine Value for Money7.4 / 10
worth 8 of 95.5 · well evidenced
how we got 7.4
Waste & Disposal5.0 / 10
worth 10 of 95.5 · thinly evidenced
how we got 5.0

what this measures, and what we cannot

What it was scored onScored from the specs the maker publishes. 0% published.
Capsule materialnot in our data1.5 / 3.0
Take-back scheme namednot in our data1.0 / 2.0

The rows that apply here are worth 5.0 between them and this one took 2.5, which is 5.0 out of 10. That 0 to 10 result is what the criterion's 10 of 95.5 points are then scaled by.

The 5.0 points we could not find a figure for are scored at the middle of the scale rather than as a zero, which awards 2.5 of them: the greyed figures above. We will not guess a specification and we will not mark the product down for our own missing research.

The verdict

The Keurig K-Slim is a K-Cup coffee maker less than 5 inches wide with a removable 46 oz reservoir, 8, 10 and 12 oz cup sizes and MultiStream Technology. It shuts off 5 minutes after the last brew and weighs 6.22 lb. Keurig lists it at $149.99, with an $89.99 sale price shown.

Pros

  • Less than 5 inches wide
  • Removable 46 oz reservoir, up to 4 cups before a refill
  • 8, 10 and 12 oz cup sizes at the push of a button
  • MultiStream Technology, which Keurig says extracts more flavor and aroma than its K-Classic
  • Fits travel mugs up to 7.0 inches tall
  • Works with the My K-Cup filter for ground coffee

Cons

  • No warranty term, wattage or warm-up time published
  • No milk frother, hot water or temperature control listed
  • Only three cup sizes, no small 6 oz cup
  • My K-Cup filter is sold separately
  • Keurig shows two prices, $149.99 and a sale price of $89.99
  • Uses K-Cup pods, and the page publishes no price per pod
From $149.99

Keurig's K-Slim single serve coffee maker is a K-Cup brewer less than 5 inches wide, with a removable 46 oz reservoir that holds enough water for up to four 8 oz cups before a refill. It brews 8, 10 or 12 oz cups at the push of a button, shuts itself off 5 minutes after the last brew, and uses MultiStream Technology, which Keurig says extracts more flavor and aroma than its K-Classic brewer. Keurig lists it at $149.99, with $89.99 shown as the sale price on keurig.com.

What is the Keurig K-Slim single serve coffee maker?

It is a pod brewer from Keurig's current line, built to take up very little counter space. Keurig describes it as less than 5 inches wide, and its dimensions out of the box are 12.14 inches high, 4.76 inches wide and 15.2 inches deep, or 17.28 inches high with the handle open. It comes in four colors on keurig.com: black, white, scarlet red and storm blue.

You lift the handle, drop in a K-Cup pod, close it, pick a cup size and press brew. The water comes from the reservoir at the back, which is removable, so you can carry it to the sink. It keeps a multiple-cup reservoir, so you are not filling it for every mug.

Keurig K-Slim specs

Pod systemK-Cup pods, plus the My K-Cup universal coffee filter for ground coffee (sold separately)
Cup sizes8, 10 and 12 oz
Water reservoir46 oz, removable, up to 4 cups of 8 oz before refilling
Brew technologyMultiStream Technology
Auto off5 minutes after the last brew
Travel mugsRemovable drip tray fits mugs up to 7.0 in tall
Size12.14 in H x 4.76 in W x 15.2 in D out of the box
Weight6.22 lb
Power120 V, 29 in cord

Keurig's page does not publish a wattage, a warm-up time or a warranty term for the K-Slim, so none of those are claimed here.

How the Keurig K-Slim MultiStream brewing and reservoir work

MultiStream Technology is the one change Keurig puts first in its feature list. The company says it extracts more flavor and aroma in every brew, measured against its K-Classic brewer with an Original Donut Shop K-Cup pod. That comparison is Keurig's own and nobody has tested it for this page, so treat it as the maker's claim and not a measured result.

The reservoir is the practical difference from a one-cup design. At 46 oz it lets you brew up to four cups of 8 oz before refilling, and because it lifts out, you can fill it at the tap. The drip tray also comes out, so a travel mug up to 7.0 inches tall fits underneath, and Keurig says the tray holds a full accidental brew, which makes cleanup easier. The auto off feature turns the machine off 5 minutes after the last brew.

If you prefer your own ground coffee, the My K-Cup universal coffee filter is listed as compatible. It is sold separately, so it adds to the cost.

Keurig K-Slim vs Keurig K-Mini

The Keurig K-Mini is the closer rival on width, since it is also under 5 inches wide. It lists at $71.00, uses a 0.35 l single cup reservoir that is filled for each brew, takes cups from 8 to 12 oz and shuts off 90 seconds after the last brew. The K-Slim costs more but swaps the fill-per-cup reservoir for a 46 oz tank, brews 3 set sizes, and waits 5 minutes before turning off.

The K-Mini's published travel mug clearance is 178 mm, about 7.0 inches, which matches the K-Slim's 7.0 inch figure. So the choice comes down to filling the tank once for several cups against filling a small reservoir for each mug.

Keurig K-Slim vs Keurig K-Express

The Keurig K-Express lists at $69.99, draws 1001 W and also brews 8, 10 and 12 oz cups with a 5 minute auto off. Both use K-Cup pods. Keurig's K-Slim page states a width of less than 5 inches and a removable multiple-cup reservoir with MultiStream, which are the two things to weigh against the K-Express's lower list price. The K-Express page publishes a wattage, which the K-Slim page does not.

Is the Keurig K-Slim worth it?

At the $149.99 list price it sits at the top of Keurig's basic single serve range, and the sale price of $89.99 shown on keurig.com is a different proposition, so check what it costs on the day you buy. For that money you get a narrow footprint, a reservoir that is not refilled per cup and MultiStream. What you do not get is a milk frother, a hot water function or temperature control, since none appears in Keurig's feature list. Nobody has tested it for this page, so there is no claim here about taste, speed or noise.

K-Cup pods are the running cost, and Keurig's page publishes no price per pod. If you are comparing pod brewers on price and features, the pod and capsule machines category has the full list.

The numbers that matter when you compare it are the reservoir, the width and the cup sizes: 46 oz, less than 5 inches and 3 sizes from 8 to 12 oz. Weight is 6.22 lb, so it is light enough to move from a counter to a cupboard, and the cord is 29 inches long, which limits how far the outlet can be from the machine.

Who should buy the Keurig K-Slim (and who should not)

It suits a small kitchen, an office desk or a dorm where width matters but you do not want to fill a tiny tank for every cup. The 7.0 inch clearance takes most travel mugs, and the 3 sizes cover a regular mug.

It is not for someone who wants lattes, a frother, a 6 oz small cup or app control, none of which Keurig lists for this model. If you want those, look at a Keurig with a milk system. Anyone who wants a price guarantee should also remember that Keurig's page shows two prices.

Frequently Asked Questions

How wide is the Keurig K-Slim?

Keurig says less than 5 inches wide, with out-of-box dimensions of 12.14 in high, 4.76 in wide and 15.2 in deep.

How big is the water reservoir?

It is a removable 46 oz reservoir, enough for up to 4 cups of 8 oz before refilling.

What cup sizes does it brew?

8, 10 or 12 oz at the push of a button.

Can I use my own ground coffee?

Yes, with the My K-Cup universal coffee filter, which is sold separately.

Does it turn itself off?

Yes. The auto off feature turns it off 5 minutes after the last brew.

Will a travel mug fit?

The removable drip tray accommodates travel mugs up to 7.0 inches tall.

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