A Carrier HVAC HK06NB023 Pressure Switch opens or closes its contacts in response to airflow pressure changes to keep the unit cycling safely.
The pressure switch senses pressure levels in the furnace and confirms that the heating and cooling system is operating within the required draft or airflow conditions before allowing key functions to proceed. Its dual-switch design and calibrated pressure settings matter because they provide precise safety verification for the HVAC system, reducing the chance of improper operation under unsafe venting or pressure conditions.
The pressure switch may need to be replaced if the furnace cycles improperly, fails to start consistently or shuts down when pressure readings in the heating and cooling equipment are not being detected correctly. Common indicators include visible wear or cracked tubing connections, while environmental signs may include moisture exposure, dirt buildup or corrosion that could interfere with accurate switch performance.
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