The present investigation explores the impacts of heat transfer in a two-dimensional flow of a viscoelastic nanofluidic flow over a penetrable channel. The consequences of internal heat generation/absorption, viscous dissipation, thermal diffusivity, and joule heating accompanied by variable properties of the nanoliquid are considered in the model flow laws. With the aid of suitable transformation inequalities, the boundary layer partial differential (PDEs) reduces to governing coupled nonlinear ordinary differential equations convenient for computation. Using MATHEMATICA syntax, a programming algorithm, the analytical homotopic scheme is imposed explicitly for attaining the dimensionless solutions of fundamental equations. The attained numerical outcomes are analyzed for diversified parameters on different flow fields. The convergence and stability criterion is established for the precision of the governing parameters. The present work has dynamic prominence in medicine and engineering, which develops interest among young researchers. In addition, the impression of system parameters on drag force, heat, and mass flow coefficient with 3D graphs is also debated. The comparison is done and acquired results show that they are in remarkable agreement with the numerical method.