Rcd hk06wc090 Spst Pressure Switch 0.18 Inches Wc

Product Description

The RCD hk06wc090 is a single-pole single-throw (SPST) pressure switch designed for use in gas furnace and air handler applications. It monitors draft pressure to verify proper inducer operation before allowing ignition to proceed, functioning as a critical safety device within the combustion air proving circuit. The switch is rated at 0.18 inches water column (WC), which defines its setpoint for making or breaking the control circuit. Licensed HVAC technicians install and replace this component as part of routine furnace diagnostics and safety-circuit service.

This pressure switch is suited for residential gas furnace installations where a draft inducer assembly is present. It connects to the inducer housing or flue system via a rubber pressure hose and interfaces with the integrated furnace control board. Common service scenarios include nuisance lockouts caused by a failed or out-of-calibration pressure switch, inducer motor issues, or blocked condensate or flue passages. Verify the cause of lockout before replacing the switch to avoid repeat callbacks.

Key Features

• SPST configuration opens or closes a single control circuit based on sensed draft pressure
• 0.18 inches WC setpoint for precise draft proving in low-pressure sensing applications
• Designed as a direct replacement for OEM pressure switches in compatible gas furnace systems
• Compact form factor fits standard inducer-port hose connections

Compatibility

Designed as an OEM-style replacement pressure switch for residential gas furnace control systems requiring a 0.18 inches WC SPST draft-proving switch.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut down power to the furnace and close the gas supply valve before servicing any pressure switch or combustion safety circuit. Inspect the pressure hose, hose barb fittings, and inducer port for cracks, clogs, or moisture before installing the new switch, as these conditions can cause the replacement switch to fault. Work should comply with applicable local mechanical codes and the furnace manufacturer installation instructions.

Technical Specifications

• Switch Type: SPST (Single-Pole Single-Throw)
• Pressure Setpoint: 0.18 inches WC

Standard Information

• Brand: RCD
• Manufacturer Part Number: hk06wc090