allowing technicians to replace the power head without draining the loop or using specialized tools

making it a standard inventory item for technicians servicing residential heating systems

What causes a B1370159 pressure switch to fail

the TER35-HW100 provides exceptional durability against corrosion and pressure spikes

Johnson Controls W42AA-1 Humidistat 323269-701 allowing technicians to replace theThe Johnson Controls W42AA 1 Humidistat is a heavy duty, 3 wire humidity controller designed for precision management of both humidifying and dehumidifying equipment. Engineered with a stable 150 strand human hair sensing element, this unit provides superior sensitivity and long term accuracy compared to synthetic alternatives. It operates on line voltage (120 240 VAC) or low voltage circuits, utilizing a Single Pole Double Throw (SPDT) snap acting