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.
Our combination coffee espresso machine will give you all the benefits of an individual drip coffee maker and espresso machine while saving on counter and storage space. Each feature is designed to achieve the ultimate coffee experience while ensuring functionality and ease of use. With the 10-cup capacity of our drip coffee carafe, you’ll be able to serve delicious cups of coffee to friends and family. Never be without coffee for long as our removable water tank allows quick and convenient refilling. The non-stick warming plate means that your machine is always as easy to clean as it is to use.