The Amana-Goodman B1370190 Primary Limit Switch is a critical OEM replacement part engineered for precise thermal regulation within residential and commercial HVAC furnace systems

this specific part is manufactured with a 1/2" bore

the FTG18A-600R mounting kit includes a 1/8" FPT connector on the sensing tube and 1-1/2" square duct mounting flange for a leak-proof seal

this is an automatic reset pressure switch that will close the circuit once the system pressure rises above the designated reset threshold

or wavering pilot flame

Carrier HH79NZ013 Temperature Sensor Els PW 17895 The Amana-Goodman B1370190 Primary LimitThe Carrier HH79NZ013 Temperature Sensor is a high precision OEM thermistor assembly designed for critical monitoring in industrial and commercial HVACR applications. As a direct replacement for the obsolete HH79NZ037 and HH79NZ003 models, this clamp on temperature probe ensures seamless integration with existing control logic without requiring invasive pipe modifications. Engineered for the Carrier 30GB 200 550 chiller series and compatible 48JK 500