Utilizing genuine Carrier HVAC parts ensures that your repairs meet the original equipment manufacturer’s standards for internal pressure management and flow regulation

This kit replaces legacy part numbers including GKT30020

Reliable 230V Operation: Designed for stable performance in 230V commercial and residential heating electrical circuits

Utilizing OEM-spec materials

as the HH19ZA940 is specifically tuned for systems requiring this exact 55-degree differential to maintain safe airflow cycles

Trane SWT3179 Pressure Switch Kit Freon Utilizing genuine Carrier HVAC partsFor veteran HVAC contractors, the Trane SWT3179 Pressure Switch Kitwhich is functionally identical to the SWT03179is a critical component for restoring furnace ignition sequences. This 0. 8" WC setpoint switch is a Single Pole Double Throw (SPDT) configuration, making it highly versatile for monitoring induced draft blower performance and ensuring proper venting before the gas valve opens. Engineering wise, this OEM replacement part is built for snap