In aluminum cast houses, scope 1 CO2 emissions mainly come from the remelting process. In a global context of decarbonization, new combustion technologies have been identified to reduce these emissions like oxyfuel burners and hydrogen combustion. To promote the industrial deployment of these technologies, it seems crucial to develop a modeling methodology to better understand their impact on heat transfer in aluminum remelting furnaces and on melting performances. This paper proposes a simplified transient modeling approach of gas-fired aluminum reverberatory melting furnaces. Using the proposed model, the impact on heat transfer, melting time, and energy consumption of oxyfuel combustion and then oxy-hydrogen combustion is presented. Based on the presented results, a discussion is proposed on the pre-design methodology to adopt in industrial burner retrofit projects.