Carrier 321975-201 Filter Retainer Rod 318172-701 also known as the KP34

also known as the KP34 pressure switch

Snap-On Integration: Features a side-mounted configuration for fast

Precision Sensing: The bulb and capillary design ensures accurate readings even in environments with high ambient temperature fluctuations

This blocked vent safety switch monitors flue gas temperatures and automatically interrupts the burner circuit if it detects hazardous conditions

Carrier 321975-201 Filter Retainer Rod 318172-701 also known as the KP34The Carrier 321975 201 Filter Retainer Rod is a critical genuine OEM replacement part engineered to maintain the structural integrity of the filtration system in high efficiency Carrier HVAC units. As a veteran grade HVAC filter support, this rod is designed to apply precise tension across the media, preventing filter bypass and ensuring that all return air passes through the filtration interface. Properly secured 321975 201 retainer rods are