Reznor 197031 Pressure Switch 321894-708 this Carrier relay is the

this Carrier relay is the preferred HVAC part to maintain system efficiency and agency listings

Common Questions What is the difference between the LF777SI and S777 models

replacing a brittle or carbon-tracked 88A12 wire often restores system reliability without requiring a full board replacement

preventing contamination and ensuring consistent performance up to a maximum temperature of 250°F

Reznor 197031 Pressure Switch 321894-708 this Carrier relay is theWhen you are dealing with thin air at elevations above 6000 feet, standard combustion air monitoring just does not cut it. The Reznor 197031 Pressure Switch is the specific high altitude solution required to maintain precise safety setpoints on your Reznor unit heater. This OEM draft switch is factory calibrated to 0. 35" W. C.identifiable by its distinct purple labelto ensure the inducer motor is pulling the correct negative pressure for safe