It's built to spec for Burnham ES2 Series boilers (including ES23 to ES26) and Burnham Series 3 boilers (303B to 306B)

and ventilation systems across various Johnson Controls brands

Replacing a brittle or corroded harness assembly restores voltage stability across the control board and system sensors

this auto-reset limit switch is engineered to monitor heat exchanger temperatures

Heil Quaker ICP 1185864 Service Valve 328140-751 It's built to spec forThe Heil Quaker ICP 1185864 is a Liquid Line Service Valve engineered for heavy duty refrigerant management in high pressure HVACR systems. As a critical point for system evacuation, charging, and isolating the refrigerant charge, this OEM replacement part is built with a high grade brass body to withstand the corrosive effects of moisture and environmental exposure. It provides a reliable seal to prevent refrigerant leaks and features a precision