This article theoretically investigates the possibilities of heat transfer of ventilation radiators used in low-temperature heating systems, and methods of their implementation. It has been found that increasing, modifying, or adding convection fenders to existing radiators can improve thermal efficiency. The main focus of the project is on improving the heating efficiency of existing radiators, which is cheaper and easier. Direct ventilation air towards the radiator or compress air between the radiator and the panel, thereby increasing thermal efficiency. Keywords: radiator, heating systems, radiator surface, conductivity, solar panels,