Low-pressure heat treatment processes are commonly used in industry, especially in such industries as automotive, machine construction, energy, etc. Due to their specificity, they are energy-intensive, which leads to high manufacturing costs of products in which they are used. The article presents an analysis of the selected low-pressure carburizing process due to energy consumption. Two vacuum furnace systems were taken into account, which consume the most energy in heat treatment processes: heating and pumping systems. Experimental studies were conducted using a vacuum furnace for heat treatment. Energy reduction was possible after limiting unnecessary work of both systems during the application of acetylene and nitrogen to the furnace chamber. After analyzing the characteristics of temperature and pressure changes during the carburizing process, changes in the control of the heating and pumping systems were proposed, which allowed for the reduction of energy consumption. After verifying the research in industrial practice, they can be implemented in the procedures of low-pressure carburizing of steel products.