Bard 8406-089 - 0.25 in. w.c. Pressure Switch

Bard part 8406-089 is an OEM air pressure switch set to open on a falling pressure signal at 0.25 in. w.c. with a +/- 0.03 in. w.c. tolerance, commonly used as a safety and proof switch in Bard wall-mounted HVAC equipment. It helps the unit verify proper airflow or draft conditions by opening the control circuit when pressure drops below the setpoint, which can prevent nuisance operation and protect key components during start-up and run cycles. When replacing a pressure switch, match the exact setpoint and tubing/wiring connections, and confirm the part number against your unit model and serial so the control sequence and safeties operate as Bard intended.

Technical Specifications
Product number: 8406-089
Manufacturer description: .25" +/- .03" Press Switch Open On Fall
HTS Code: "9032.20.0000"

$20.00 *

* Orders less than $50 may incure a minimum order fee.