Keurig K-Slim (Black)

By Keurig · Coffee Makers · Kitchen & Cooking

  • 46 oz removable water reservoir
  • 3 brew sizes: 8, 10, 12 oz
  • MultiStream Technology for even K-Cup saturation
  • Less than 5 inches wide
  • Auto-off after 5 minutes of inactivity

Lowest price seen
~$109.99 (approx.)
from $109.99 at Amazon

Prices are snapshots. Check the current price with the store.

Summary

The Keurig K-Slim is a pod-only single-serve brewer built for narrow counters: under 5 inches wide with a removable 46 oz reservoir and 8, 10 and 12 oz brew sizes. Independent testing rates it fast and consistent but weak on coffee quality, and it has no Strong or temperature control.

Strengths

  • Under 5 inches wide, so it fits counters a full-reservoir brewer will not.
  • The removable 46 oz tank holds enough for up to four 8 oz cups.
  • Brew time is fast and repeatable: just over 1.5 minutes across five back-to-back cups in testing.
  • Three brew sizes and 7-inch mug clearance cover most mugs.
  • Push-button operation and a 5-minute auto-off make it easy day to day.

Weaknesses

  • Independent testing scored the coffee under-extracted and watery, with the weakest water distribution in its test group.
  • No Strong-brew button and no temperature control, so owners cannot compensate for a weak cup.
  • Brew temperature is inconsistent in tests; one 30-day owner test measured 158°F.
  • MultiStream made no measurable difference: a blind comparison found the coffee indistinguishable from a non-MultiStream Keurig.
  • Owner reports describe units that stop brewing within 1-2 years, and Keurig failures are usually irreparable.
  • Descaling can lock the machine in descale mode, and warranty claims are sometimes denied.

Verified specifications

Model / systemKeurig K-Slim, pod-only single-serve K-Cup brewer.
Region and powerUS 120 V; a Keurig Care answer on Best Buy’s Q&A reports 1470 W.
Brew sizes8, 10 and 12 oz.
Water reservoir46 oz (1.36 L), removable; Keurig says up to four 8 oz cups before a refill.
Footprintless than 5 inches wide.
Mug clearancefits mugs up to 7.0 inches tall with the removable drip tray.
Auto-offturns off 5 minutes after the last brew.
MultiStream Technologythe upper needle saturates the pod with multiple streams; the post-2021 revision uses five needles.
Descaledocumented descaling cycle; TechGearLab describes a 15-20 minute cycle, the fastest it tested.
Smart Startheats then brews in one step after the size and brew buttons are pressed.
High-altitude modeenable above 1,500 m / 5,000 ft by holding brew and 8 oz for 3 seconds.
Brew-strength and temperature controlnone; no Strong button and no temperature adjustment.
Accessoriestakes the Keurig My K-Cup Universal Reusable Coffee Filter and an optional side-reservoir water filter kit, both sold separately.
Dimensions15.2 × 4.7 × 12.1 in (Tom’s Guide); 12 × 5 × 15 in (Consumer Reports); 4.8 × 15.2 × 12.1 in and 6.2 lb (The Coffee Maven).
Full research notes and sources

Brew speed and coffee quality

TechGearLab’s hands-on test scored the K-Slim 55/100: 3.8/10 for brew quality, 6.7/10 for user friendliness, 6.9/10 for ease of cleaning and 5.3/10 for consistency. It called the coffee under-extracted and watery, found no pre-infusion and the weakest water distribution in its test group, yet measured only about 2.5°F of variation between back-to-back cups and a brew time of just over 1.5 minutes from first to fifth cup.

Consumer Reports rates first-cup and repeat speed highly and lists an average coffee temperature of 175°F. Wirecutter notes most Keurig machines brew around 192°F, below the Specialty Coffee Association’s 194-205°F range, and tested the K-Slim specifically to judge MultiStream, finding its coffee indistinguishable from a non-MultiStream K-Classic. A 30-day owner test recorded 158°F. Those figures come from different measurement points, so they are not directly comparable.

Running costs and upkeep

Recurring cost is pods: Tom’s Guide cites roughly $7-$14 per 12-pack, about $0.60-$1.15 per pod. A reusable My K-Cup filter is the main way to cut the per-cup cost, though Wirecutter found reusable-filter results excessively watery unless the grind is very fine. Optional extras include a Keurig water filter, descaling solution, and replacement parts such as the reservoir, drip tray and pod holder. Cleaning follows the manual: rinse the pod holder weekly, wipe the reservoir and lid, clear the entrance and exit needles with a straightened paper clip, and descale every three months or when the machine asks.

Reliability and descaling

Durability is the biggest caution. A Best Buy owner reported a unit bought in July 2020 that powered on but stopped brewing by December 2021, and Trustpilot reviews of keurig.com describe K-Slim units failing in under two months and warranty claims denied for lack of a receipt or serial number. Wirecutter says Keurig machines have a reputation for breaking easily and are usually irreparable once they fail; the pump, heater and control board are not user-serviceable. The one-year limited warranty covers the US and Canada only and may exclude damage from non-Keurig pods or accessories. Descaling is its own recurring pain: a r/keurig thread documents a machine stuck in descale mode, with a community fix based on holding the 8 oz and 10 oz buttons together.

Is it worth it?

The K-Slim makes sense for one job: putting a full-reservoir pod brewer into a very narrow space, bought cheaply. Keurig lists it at $149.99 and has sold the brewer alone for $109.99, with a brewer-and-four-box starter kit at $89.99. Best Buy showed the black unit at $99.95, Walmart listed Black at $98.98 and White at $149.99 with the broader range from about $81 to $150, Wayfair listed $98.99 against a $149.99 reference, and a Target listing showed a $69.99 price. Consumer Reports shows it from $105.

Below about $90 it is good value for a narrow counter. Above roughly $110 it weakens quickly, and the cheaper K-Express adds a Strong button that Wirecutter prefers. If flavor or longevity matter more than footprint, this is not the machine.

Which model this is

This page covers the Keurig K-Slim single-serve K-Cup pod coffee maker in Black, sold with the ASIN B083248S3B. It is Keurig’s narrowest full-reservoir brewer, not the K-Slim + ICED, which adds a BREW OVER ICE button and an iced cycle, nor the K-Mini, K-Mini Plus, K-Express or K-Supreme.

Retailer codes differ and Keurig does not reconcile them: Best Buy lists model 5000363760, a Walmart listing calls it K900, and an early owner video labels the MultiStream revision K190. The post-2021 revision uses a five-needle upper pod needle. The Coffee Maven lists the K-Slim as discontinued, but Keurig and major US retailers still list it, so treat that as that site’s own status label.

Sources

Manufacturer:

Independent reviews:

Owner reports:

Parts and stores:

Buying guides for this category

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