The influence of the shape and dimensions of the chimney blocks on regenerative heat transfer in a glass-making furnace with a horseshoe-shaped flame is considered. Chimney blocks with various combinations of the cross-section area, height, and wall thickness have been studied. To evaluate the efficiency of the blocks, the regenerator design parameters were used. It has been established that the smallest volume and weight of the high-temperature zone of the packing, limited by a flue gas temperature of 1100°C, can be achieved by using TL 15/15 blocks, characterized by a specific volume of 0.259 m3/m3 and a specific heating surface of 18.9 m2/m3. In the sulfate condensation zone and the low-temperature zone of the packing, TG 15/15 blocks should be used, for which the specific volume and specific heating surface are 0.296 m3/m3 and 17.4 m2/m3, respectively.