Line of CREST Condensing Boilers includes three new models with 750,000, 1.0 million and 1.25 million Btu/hr inputs. Featuring Wave fire-tube design and advanced combustion technology, the new CREST Boiler models deliver 96.2 percent thermal efficiency and up to 20:1 modulation turndown. Line now includes 10 condensing commercial boilers with inputs ranging from 750,000 Btu/hr up to 5.0 million Btu/hr. With an 8-inch touchscreen and multi-color interface, the CREST Boiler’s SMART TOUCH operating system provides control and easy-to-use monitoring functions. Boilers operate over a wide range of flow rates with very low pressure drop, allowing for a full flow system. This streamlines installation by eliminating the additional time and materials costs required for primary/secondary piping and the pumps needed to maintain flow in a water-tube boiler. Lochinvar.