Lochinvar’s CREST condensing boilers include three new models with 750,000, 1 million and 1.25 million Btu/hr. inputs. Featuring Wave fire-tube design and advanced combustion technology, the models deliver 96.2% thermal efficiency and up to 20:1 modulation turndown. They are designed with a top-mounted micro-metal fiber burner engineered specifically for fire-tube technology. The models feature an 8” touchscreen and multi-color interface SMART TOUCH operating system, a built-in cascading sequencer, and six venting options. It also permits direct-vent air intake and exhaust runs up to 100 equivalent ft.