The demand for high-purity solvents in semiconductor and chemical industries requires efficient removal of submicron impurities, a challenge for conventional methods. This study introduces a temperature-assisted filtration strategy that utilizes thermally induced aggregation to enhance particle capture. Using polystyrene nanoparticles in water and ethanol as a model, filtration tests at 5, 25, and 55°C revealed a positive correlation between temperature and removal efficiency. Light scattering and SEM analysis confirmed that elevated temperatures promote the formation of larger particle clusters, facilitating their retention by porous media. This phenomenon was successfully replicated with copper and titanium dioxide nanoparticles, demonstrating broad applicability regardless of filter pore size. These findings suggest that temperature modulation offers a scalable, energy-efficient solution for improving physical impurity removal in diverse industrial purification processes.