 A computational fluid dynamics, CFD, model was developed to optimize the placement of the absorber plate in a solar air heating system, SAHS. The model was validated against experimental data and found to be accurate. It was determined that the best configuration for the SAHS was a type 5 configuration with a gap of 0.012 meters between the absorber plate and the collector base. This configuration resulted in increased thermal efficiency, heat transfer coefficient, and Nusselt number compared to other configurations tested. This article was authored by Haywa Ablamarov and Muhammad Shamsi.