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Lochinvar, LLC releases the NOBLE™ Fire Tube Combi Boiler for residential applications. With three models ranging from 110,000 to 199,999 Btu/hr., the Noble boiler offers easy installation and serviceability, true instantaneous response time and a user-friendly interface. In addition to 10:1 turndown and 95 percent Annual Fuel Utilization Efficiency (AFUE), the Noble Fire Tube Combi Boiler is designed, engineered and assembled in the USA. 




What is modulation? Let’s say your home is heated by a KNIGHT with 285,000 Btu/hr heating power. When it’s just “pretty cold” outside, the boiler starts by firing at a fuel-saving 57,000 Btu/hr, only 20% of its maximum heating potential. As the temperature drops to “really really cold,” KNIGHT is designed to “modulate” upward to the 100% maximum 285,000 Btu/hr of heating power

KNIGHT automatically adjusts its firing rate to exactly meet demand for heat.Modulation eliminates the frequent, noisy on/off cycling heard from boilers or forced-air systems that can only fire at 100%. This helps reduce wasted fuel,and ensures a (quiet KNIGHT) for your home.

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