boilerThe CREST® Condensing Boiler from Lochinvar® brings leading-edge technology and exceptional energy-efficiency to the largest commercial applications, making it the ideal choice for both new construction and energy retrofit applications, says the manufacturer. Available in five models that range from 1.5 to 3.5 million Btuh, CREST offers thermal efficiencies as high as 99 percent. Designed with innovative fire-tube technology integrated with the SMART TOUCH™ operating control, CREST offers design flexibility and the performance characteristics to meet today’s building standards.