Bunn-O-Matic came out with a different drip-brew machine. In this type of coffeemaker, the machine uses a holding tank or boiler pre-filled with water. When the machine is turned on, all of the water in the holding tank is brought to near boiling point (approximately 200–207 °F or 93–97 °C) using a thermostatically-controlled heating element. When water is poured into a top-mounted tray, it descends into a funnel and tube which delivers the cold water to the bottom of the boiler. The less-dense hot water in the boiler is displaced out of the tank and into a tube leading to the spray head, where it drips into a brew basket containing the ground coffee. The pourover, water displacement method of coffeemaking tends to produce brewed coffee at a much faster rate than standard drip designs. Its primary disadvantage is increased electricity consumption in order to preheat the water in the boiler. Additionally, the water displacement method is most efficient when used to brew coffee at the machine's maximum or near-maximum capacity, as typically found in restaurant or office usage. In 1963, Bunn introduced the first automatic coffee brewer, which connected to a waterline for an automatic water feed.

If you make your coffee at home, you want to make sure that you’re getting a great-tasting and convenient cup of coffee whenever possible. The best way to do this is to invest in the right equipment. In the home, no piece of coffee equipment is more important than the coffee maker. In most cases, you add the water and the grounds, and the coffee maker takes care of the rest. With many types of coffee makers available on the market today—including French presses, stovetop makers, pour overs and traditional drip coffee brewers—it can be difficult to choose the right one for your needs.
When it comes to features, our top pick’s little sister, the OXO On 9-Cup Coffee Maker, looks and feels much the same: a single-button dial, programmable start times — even the timer that lets you know how old the coffee is after it’s been brewed is identical. On this version, the water reservoir isn’t detachable, but it brews coffee significantly faster than the 12-cupper’s 14 minutes(!) and it’s $100 cheaper. It’s a great machine that didn’t earn our top spot simply because the coffee it makes didn’t perform quite as well as the other three top picks in our taste tests, and it doesn’t let you tinker with water temperature and extraction the way the larger machine does.

The Hamilton Beach 12-Cup BrewStation coffee maker offers convenient one-hand dispensing without a conventional glass carafe. There's no pouring or spills, and nothing fragile to break and replace. No matter how much you try, it’s impossible to get freshly brewed flavor from coffee that’s been sitting on a hot plate too long. That’s why the Hamilton Beach BrewStation was created, the only coffeemaker that keeps coffee tasting fresh for up to four hours. This best-selling coffee maker...
Great for active, busy lifestyles, it’s Great for active, busy lifestyles, it’s the BLACK+DECKER Personal Coffeemaker. It brews single Servings of your favorite coffee directly into the 16-oz. Travel mug, which fits most car cup, holders. The permanent grounds filter is compatible with coffee grounds and pre-packaged soft pods, and it’s easy to rinse clean in the sink. The one-touch operation quickly delivers the morning coffee you need, with a compact design that’s perfect for small...
†Programmable Brew Time: Conventional wisdom frowns at grinding beans early and programming a pot to brew later. The aromatic compounds in coffee beans start to oxidize as quickly as 15 minutes after grinding, which causes coffee to start losing aroma and flavor. But Michael Ebert, senior consultant at Firedancer Coffee Consultants, LLC, assured us that, given the trade-offs for convenience, “grinding the night before will still make a great coffee — just not as great as it could be.” Seven of the 10 pots we tested are programmable, including three of our top picks (all but the Bonavita).
The simplicity starts with its design: a single button with a scrolling dial underneath an LED interface. That button is the only one on the entire machine. With it, you set the time, set the water temperature, set how many cups you want brewed, and when you want the brewing to start. It takes a second to get the hang of it, but we were impressed with how intuitive it is — a stark contrast to a machine like the Moccamaster KBT 10-Cup Coffee Brewer, which had so many extra pieces, it required constant consultation of the instruction manual.
The Scoop Single-Serve Coffeemaker goes where no coffeemaker has gone before, brewing hotter, faster and better-tasting coffee than most gourmet machines out there. And, its benefits don’t stop there. The Scoop Coffeemaker utilizes the simplicity of ground coffee and brews a customizable cup quickly: an 8 oz. cup in less than 90 seconds or a 14 oz. travel mug in under two-and-a-half minutes. Aside from its versatility in using inexpensive coffee grounds to brew a great-tasting cup, The...

That said, it’s not as elegant to use as the OXO machines. (Nor is it as nice to look at. One tester described its tall, bulbous body and squat carafe as “UFO-like.”) Take its eight-button controls, for example, which you use to toggle among brew modes, scroll up and down within the menu, and engage a manual brewing feature. Programming it to start brewing at a certain time was about as intuitive as setting an alarm on a clock radio — easy enough, but more technical than sleek. OXO definitely feels like the future; Behmor is more, “If it ain’t broke, why fix it?”
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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