The chief goal of the present work is to compare buoyancy motivated energy transit occurrences inside a quadrantal porous inclusion when a uniform (isothermal) and non-uniform (sinusoidal) heat sources are positioned at the bottommost wall. The left upright wall is retained at moderately colder temperature. The crucial parameters altered for this work are Raleigh number (103 ≤ Ra ≤ 106). Results are obtained with the aid of irreversibility and average Bejan number approach. The velocity and pressure are united for the contemporary inquiry using the SIMPLE technique. It has been witnessed from the contemporary revision that the local heat allocation irreversibility significantly varies with Ra, and heating strategies of the bottom wall. Diffusion-mode heat transportation has only been seen at low Ra, whereas convection-driven heat transfer is detected at high Ra.