Rcd hk06mb020 Dual Pressure Switch Hvac

Product Description

The RCD hk06mb020 is a dual pressure switch designed for use in HVAC systems where airflow and draft proving are critical to safe furnace or air handler operation. This switch monitors negative pressure at two setpoints — -0.75 inches WC and -0.30 inches WC — and signals the control board when proper draft conditions are confirmed or lost. It is a direct-replacement component typically installed by licensed HVAC technicians during routine service or system fault diagnosis.

This dual pressure switch is suited for residential and light commercial HVAC applications, particularly in gas furnace systems that require multi-stage draft proving. It is commonly installed in induced-draft and condensing furnace configurations where two distinct pressure thresholds must be monitored to allow safe ignition sequencing. Technicians working on Carrier-branded HVAC equipment will recognize this part number as a listed Carrier parts and accessories replacement component.

Key Features

• Dual setpoint design monitors two negative pressure thresholds in a single switch body
• Setpoints rated at -0.75 inches WC and -0.30 inches WC for multi-stage draft proving
• OEM-style replacement for Carrier HVAC central air and furnace systems
• Compact form factor suited to typical furnace cabinet space constraints

Compatibility

Listed as a Carrier parts and accessories replacement component for Carrier HVAC central air systems. Designed as an OEM-style replacement dual pressure switch for induced-draft and condensing gas furnace applications.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect all power to the furnace and shut off the gas supply before removing or replacing the pressure switch. Verify that rubber tubing connections to the inducer housing and switch ports are secure and free of cracks or blockages before restoring power. Pressure switch replacement work on gas appliances may be subject to local mechanical codes.