Miroljub Petrović develops heat-saving patent called Srpski lonac

Miroljub Petrović, a 74-year-old inventor from Ivanjica, has developed a patented device named “Srpski lonac” (Serbian Pot) designed to maximize thermal energy efficiency in households. The invention is intended to be retrofitted onto existing boilers to capture heat that would otherwise escape through the chimney.

The system utilizes approximately 15 meters of piping to circulate cold water through the exhaust path, redirecting heat to warm radiators, water heaters, washing machines, and other household appliances. Petrović claims the device can significantly increase energy utilization, addressing the issue where average households lose roughly 60 percent of their thermal energy.

Petrović stated that he patented the invention with the Intellectual Property Office six years ago. He is currently seeking partners for mass production to help reduce heating costs and lower air pollution by minimizing waste.