Carrier HK06WC090 Pressure Switch

The Carrier HK06WC090 Pressure Switch is a factory-authorized SPST (Single Pole Single Throw) safety component engineered for precise inducer blower vacuum sensing in residential gas furnaces and heat pumps. This OEM Carrier replacement part features a standard 1/4" barb connection and is factory-calibrated to a 0.18" W.C. (Inches Water Column) set point, ensuring safe combustion cycles by verifying proper venting and airflow before ignition. As a veteran-grade HVAC pressure control, the HK06WC090 provides a reliable interface with the integrated furnace control board to prevent unsafe operating conditions such as flue blockages or inducer motor failure.

Designed for backward compatibility, this 0.18" WC pressure switch is the direct performance replacement for several legacy and obsolete models. It serves as the primary substitute for HK06WC088, HK06WC076, HK06WC086, and FS6536-866. The robust housing and precise diaphragm response make it a staple for contractors maintaining Carrier, Bryant, and Payne equipment. Ensure the existing mounting bracket is retained, as modern service replacements typically utilize the original hardware for a secure fit.

• Universal Compatibility: Serves as a direct replacement pressure switch for multiple discontinued Carrier and Bryant part numbers, simplifying truck stock.
• Reliable Safety Interlock: Precise 0.18" W.C. vacuum rating ensures the furnace only initiates ignition when proper draft is established.
• Robust SPST Circuit: High-cycle Single Pole Single Throw switch design provides consistent electrical continuity for years of operation.
• OEM Specifications: Guaranteed fit for 1/4" tubing installations, eliminating the need for field modifications or adapters.

• What does a 0.18" W.C. rating signify? This indicates the specific negative pressure (vacuum) required to close the switch contacts and signal the control board that the inducer is moving sufficient air.
• Will this replace the HK06WC088 model? Yes, the HK06WC090 is the authorized successor to the HK06WC088 and several other older furnace air switches.
• Does it include a new mounting bracket? Most current production runs require you to reuse the legacy bracket from the unit being serviced.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.