Heil Quaker ICP 1010493 Heat Exchanger 340155-7026 What does the "FT" class

What does the "FT" class rating signify

Technicians should look for visual cracks

providing a wide footprint for stabilized motor support

and HC21ZE115

Heil Quaker ICP 1010493 Heat Exchanger 340155-7026 What does the "FT" classThe Heil Quaker ICP 1010493 Secondary Heat Exchanger is an essential component for restoring thermal efficiency in high efficiency condensing furnaces. Engineered for ICP heating systems, this stainless steel condensing heat exchanger recovery coil is designed to capture latent heat from combustion gases that would otherwise be lost. As a critical HVAC replacement part, it addresses common failure points such as clogged secondary coils, internal