this kit restores original equipment performance and mitigates common system protection faults

even in high-bay warehouse environments or dusty mechanical rooms

or differential pressure across coils

The reversible mounting design allows the Johnson Controls M9220-GGC-3 to be flipped

Carrier 334357-755 Heat Exchanger 30067439-890 this kit restores original equipmentThe Carrier 334357 755 Secondary Heat Exchanger is a precision engineered OEM replacement part designed for 80,000 BTU 90%+ AFUE condensing furnaces. As a 20 cell condensing heat exchanger, this component is critical for recovering latent heat from combustion exhaust, significantly increasing system efficiency. This kit serves as a direct upgrade for older, failure prone polypropylene coated units, utilizing enhanced materials to better withstand the