We are not able to confirm if the AS-61579-12 heat exchanger is suitable for the furnace model (RGPS-07-NAMER) you reference.
The screenshot below (taken from Document 92-42800-RGPS 2020) provides the Heat Exchanger group parts for the RGPS series.
Before purchasing, we strongly encourage you to consult a licensed heating technician who is familiar with your equipment and can assist in making the correct Heat Exchanger selection.
Replied on February 15, 2024 by Ori from Industrial Stores
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