Description
The Mr. Coffee 2129512 is the switch version of the brand’s five cup machine. There is no clock and no timer. You put water in, put grounds in, press the switch, and a light tells you the machine is on. The rest of the feature list is short: a Grab-a-Cup auto pause valve, a Lift and Clean filter basket, and an updated glass carafe with ounce markings.
Mr. Coffee sells the same capacity with a programmable timer as a separate model, and the choice between them is the whole decision. Within the coffee maker category this is the cheaper half of that pair, and the 2191951 programmable five cup is the version to buy if you want coffee waiting for you.
Brewing System and Capacity
Gravity drip into a glass carafe on a warming plate. The product description gives the useful number rather than the marketing one: the machine makes up to 25 ounces of coffee, which it describes as two 12 ounce cups. The five cup figure on the title uses the five ounce drip serving, and 25 divided by 5 is where it comes from.
Both numbers describe the same carafe and the gap between them causes real disappointment. If two people in a household each want a full mug, this machine brews exactly one round with nothing spare. There is no small batch setting and no strength control, so the only variable you have is how much coffee you put in the basket.
The Ounce Marked Carafe
Mr. Coffee describes the carafe as updated and ergonomic, with ounce markings for measuring and a shape designed for easier pouring and handling. Marking a carafe in ounces rather than in cups is a small but genuinely useful decision on a machine this size, because it lets you dose water against the mug you are actually filling instead of against a five ounce convention nobody uses.
The carafe is glass, which the listing states explicitly. Glass is easier to see through and easier to clean than stainless, and it is also the part that breaks. On a machine at this price a replacement carafe can cost a meaningful fraction of the whole appliance, and the listing does not say whether one is sold separately.
Grab-a-Cup Auto Pause and the Lift and Clean Basket
The auto pause valve stops the brewing cycle when you pull the carafe out, then resumes when you put it back. Mr. Coffee does not state how long the valve holds before the basket overflows, which is the number that matters. On a 25 ounce machine the whole cycle is short enough that the feature is a convenience rather than a necessity.
The Lift and Clean filter basket comes out in one piece for washing. One owner review raises a specific complaint about it worth repeating: paper filters do not sit neatly in the holder, although the same owner notes it does not affect how they perform. The same review observes that this five cup carafe is easier to dry than the smaller four cup model because a hand fits inside it, which is the kind of practical detail no specification sheet records.
The Height Figure Is Wrong
The imported dimensions read 10.7 inches deep by 9.8 inches wide by 7.2 inches high. The height cannot be right. A five cup glass carafe is close to seven inches tall on its own, before the brew basket, the water tank and the lid above it are accounted for, and the closely related Mr. Coffee five cup programmable measures 10.63 inches high with a smaller footprint.
These read as packaging dimensions for a box lying flat rather than as measurements of the machine standing up. Assume the real height is somewhere around ten to eleven inches, which will still clear a standard wall cabinet, and do not plan a shelf around the 7.2 inch figure. The item weight of 2.93 pounds is plausible for a small plastic bodied brewer with a glass carafe.
Other Faults in the Record
The first bullet point Amazon shows for this product is a boilerplate instruction to consult the user guide before first use. It carries no information and it occupies the position where the most important claim should be. The same placeholder appears on several other listings covered on this site, so it is a seller template rather than anything specific to this machine.
The Filter Type attribute says Reusable while the manufacturer’s own bullets describe only a removable basket that lifts out for cleaning, with no permanent mesh insert named anywhere. The Model Name field reads 5-Cup, which is a capacity rather than a name, and the real identifier is the item model number 2129512. The Department field reads Unisex-Adult, which is a clothing taxonomy value applied to a coffee maker. The Special Feature field lists Compact and Auto Pause alongside an easy to view water window, which duplicates the bullet points rather than adding to them. Between the boilerplate opening bullet and the recycled attributes, this listing carries fewer usable facts about the machine than almost any other record covered on this site, which is why so much of this review is about what is absent. The record dates the listing to January 2021.
What the Specifications Do Not Settle
There is no brew temperature, no wattage and no brew time. There is no automatic shutoff named anywhere in the bullets, and on a switch only machine that means the warming plate stays on until someone turns it off. The product description ends with a care and maintenance note that is cut short in the imported data, so the descaling instructions are not available here.
It is not stated whether the carafe or the basket is dishwasher safe, whether the basket takes cone or basket shaped paper filters, or what the cord length is. The Special Feature field lists an easy to view water window, which none of the manufacturer bullets mention, so it is not clear whether the reservoir has a level marking at all.
Who It Suits
This suits one person, or two people who each drink one mug, who are in the kitchen when the coffee is made and who want to spend as little as possible. The ounce marked carafe and the removable basket are sensible touches, and a machine with a single switch has almost nothing on it that can fail.
Look elsewhere if you want coffee ready at a set time, if you need an automatic shutoff, or if anyone wants a second cup. The Capresso 426.02 Mini Drip adds a timer and a permanent goldtone filter at the same capacity, and if the carafe itself is the part you would rather not deal with, the single serve brewer category removes it entirely at a higher cost per cup.
