The precision-machined brass housing provides superior thread engagement and corrosion resistance

making it ideal for high-flow applications such as fan coil units

it monitors the air pressure generated by the inducer motor to ensure proper venting of combustion gases

The Johnson Controls V43BS-3 is a 2-inch

Heil Quaker ICP 1190281 Board 322056-301 The precision-machined brass housing providesThe Heil Quaker ICP 1190281 Defrost Control Board is a critical OEM replacement component designed for high performance heat pump systems. As a veteran grade HVAC defrost control, this board manages the transition between heating and cooling modes to prevent ice accumulation on the outdoor coil. It is an exact drop in ICP replacement part for many Heil, Tempstar, Comfortmaker, and Arcoaire models, including the NXH5 and NXH6 series. This circuit board