Quench announces the launch of its Quench 550 and Quench 548 bottleless water coolers. The 5 Series machines are equipped with On-Demand Chilling™ technology and provide an endless supply of cold drinking water, eliminating the need for a storage tank and related tank sanitization technology. The Quench 550 also dispenses hot water and comes with a hot-water safety lock. They feature state-of-the-art filtration technology, push-button dispensing, recessed spigots and automatic leak detection, as well as a sleek, contemporary design. www.quenchonline.com, (888) 877-0561