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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