the MARS 66 features a 35-amp contact rating at 277 VAC and a non-positional design

Utilizing stainless steel heat exchanger tubes significantly reduces scaling and fouling

providing a seamless interface for indoor fan motor operations

Can I use this to replace a silver-end-cap 3

As a veteran-preferred component for boiler water level control

Williams P625473 Control Board 320074-702 the MARS 66 features aExperienced HVAC contractors recognize the Williams P625473 Control Board as the essential genuine OEM replacement part for maintaining the operational integrity of Williams Comfort Products heating systems. As a primary furnace control board, this component functions as the central logic unit, regulating critical sequences such as ignition, blower timing, and safety circuit monitoring. Engineered for a drop in fit, it eliminates the calibration