Answer
Apr 20, 2026 - 11:57 AM
The Suburban 2613A core is designed specifically for NT-30SP and NT-34SP furnaces and will not fit an NT-22-FCA cabinet.
Furnace cores are model-specific and must match the exact cabinet size, airflow, and mounting configuration, even within the same NT series.
While both units may be used in park models, they are not interchangeable.
Unfortunately, parts for NT-22-FCA units can be difficult to source, and in many cases a full furnace replacement may be the more practical solution.
Furnace cores are model-specific and must match the exact cabinet size, airflow, and mounting configuration, even within the same NT series.
While both units may be used in park models, they are not interchangeable.
Unfortunately, parts for NT-22-FCA units can be difficult to source, and in many cases a full furnace replacement may be the more practical solution.
A model like the SF-25Q or SF-30FQ would be the closest equivalent, offering updated direct spark ignition and improved efficiency.
These are not direct drop-in replacements for the old cabinet, but they are the recommended long-term solution with much better parts availability going forward.
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