Carrier HK06WC077 Pressure Switch 30067439-890 the 90-163 ensures a positive

the 90-163 ensures a positive make and break

Using the OEM switch ensures the system operates within its tested safety parameters

using this OEM assembly is vital for maintaining the factory-rated combustion efficiency and safety standards

allowing for a "dry" upgrade that does not require system depressurization

Ensure proper terminal connections to the defrost thermostat (sensor) to prevent short-cycling or inefficient heating performance

Carrier HK06WC077 Pressure Switch 30067439-890 the 90-163 ensures a positiveThe Carrier HK06WC077 is an OEM replacement 2 stage air pressure switch designed for high efficiency gas furnaces. This dual Hi Lo component features two independent switches in one assembly to monitor inducer motor performance across high and low fire stages. The low fire switch is calibrated for a 0. 22" w. c. break, while the high fire switch is rated for a 0. 43" w. c. break. Manufactured by Honeywell as part number BA6838, this SPST normally open