CR’s take: Our highest-rated drip brewer with an insulated, thermal carafe, the Ninja Bar Brewer CF085 has plenty to recommend it. CR’s testers find that it offers superb brew performance and is very easy to use. In our member surveys, Ninja drip coffee makers received an Excellent rating for owner satisfaction. (We don’t yet have enough data to judge reliability.) This model has a full suite of features, including an unusual over-ice brew mode for making iced coffee. Ninja claims its thermal carafe will keep coffee hot for 2 hours, and the machine comes with a milk frother and a standalone French-press brewer. These features come at a price, of course; the Ninja Bar Brewer is the second most expensive model on this list.
It can take a little while to get to know the ins and outs of a new coffee maker. In CR’s labs, each drip coffee maker we test brews roughly 65 cups by the time our engineers are through with it. And brewing is just one of many aspects we look at. We test for handling and convenience, too, so you can choose a model that helps you sail through morning madness. 
One of the many issues with other coffee makers is that the brewing process is inconsistent, with temperature fluctuations that can potentially affect the acidity, aroma, and final flavor of your beverage. The OXO On Barista Brain Coffee Maker is fixed with an intelligent microprocessor that monitors ambient temperatures throughout the brewing process.
If you’re shopping for coffee at the grocery store, “check the roast date, rather than the ‘best by’ date,” says Awan. With mass market roasters, the “best by” date can obfuscate the window in which coffee beans are at their best: about 4 days after roasting, when some, but not all, of the carbon dioxide has escaped from the beans. (Too much carbon dioxide captured within beans tends to create uneven extraction, as the gas escapes — this is what pre-infusing tries to counter. Conversely, too little carbon dioxide in the bean can lead to a loss of flavor.)
At the beginning of the twentieth century, although some coffee makers tended to uniformity of design (particularly stovetop percolators), others displayed a wide variety of styling differences. In particular, the vacuum brewer, which required two fully separate chambers joined in an hourglass configuration, seemed to inspire industrial designers. Interest in new designs for the vacuum brewer revived during the American Arts & Crafts movement with the introduction of "Silex" brand coffee makers, based on models developed by Massachusetts housewives Ann Bridges and Mrs. Sutton. Their use of Pyrex solved the problem of fragility and breakability that had made this type of machine commercially unattractive. During the 1930s, simple, clean forms, increasingly of metal, attracted positive attention from industrial designers heavily influenced by the functionalist imperative of the Bauhaus and Streamline movements. It was at this time that Sunbeam's sleek Coffeemaster vacuum brewer appeared, styled by the famous industrial designer Alfonso Iannelli. The popularity of glass and Pyrex globes temporarily revived during the Second World War, since aluminum, chrome, and other metals used in traditional coffee makers became restricted in availability.
The Bunn 13300.0004 VP17-3SS2U Pourover commercial Coffee Brewer The Bunn 13300.0004 VP17-3SS2U Pourover commercial Coffee Brewer with Three Warmers One Lower and Two Upper in Stainless Steel is perfect for convenience stores family restaurants cafes or diners. Totally portable it can be used anywhere there's a plug. Just pour cold water in the top and coffee brews immediately ...  More + Product Details Close
6 month warranty for Spinn Original, Original Plus, and Original pro. If your machine is defective (DOA) when you receive it, we’ll make it right immediately. For US customers, if it develops a problem later that’s our fault, we’ll either (at our option) ship you the parts that need to be replaced along with detailed instructions, or ship it back to us for repair or replacement – in either case, for free, including shipping. For international customers, parts and repairs are free, but shipping is not included. The warranty covers everything except water filters. Unfortunately, if you modify your firmware, we can’t cover your Spinn under warranty (because it’s easy to break your Spinn by modifying your firmware!)
Certified by the SCAA and SCAE, this coffee maker exceeds the stringent quality control guidelines set forth by international coffee organizations. The inventor of this coffee maker, Gerard C. Smit has dedicated his life to creating coffee makers that do away with planned obsolescence, ensuring that this model – and every following model – is long-lasting, reliable, and energy-efficient.
Whole bean coffee that you grind yourself is preferable to pre-ground, too. The bean’s exterior traps and protects all of the delicate, volatile, and water-soluble oils that give coffee its flavor. As soon as you break the protective shell, it’s easy for the flavor to get contaminated, and much of the aroma escapes as soon as the oils are exposed to air.
Our brew-performance tests measure the brew temperature and contact time (how long water stays within a sweet spot of 195° to 205° F for brewing). We measure concentration using a refractometer, a device that measures the amount of coffee dissolved in each brew. Our convenience tests look at how easy it is to set timers, fill the reservoir, clean the machine, and more. And for the first time, we’re incorporating predicted reliability and owner satisfaction ratings into the new Overall Score for each model. We determine these ratings for each drip coffee maker brand using survey data collected from thousands of CR members.
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