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the A-4400-608 protects the integrity of pneumatic control systems
it maintains structural integrity under 2000 CFM airflow
it serves as a universal mechanical thermostat replacement for hundreds of legacy White-Rodgers and competitive vertical-mount units performance-tested over decades
or a malfunctioning fan belt
this unit is a versatile solution for powering contactors
Lennox 79J08 Pressure Switch the A-4400-608 protects the integrityFor service calls involving residential or commercial HVAC equipment, the Lennox 79J08 Suction Pressure Switch is the direct OEM replacement for maintaining critical system safety and efficiency. This low pressure switch is factory calibrated to actuate at 25 PSI and features a reset point of 55 PSI, making it a vital component for protecting the compressor against low charge conditions or evaporator freeze ups. Engineered specifically for R22