This heat load calculation report analyzes the cooling and heating requirements for renovating the AC system at PT. INDONESIA STANLEY ELECTRIC. It includes a summary table listing the heat loads, floor areas, and airflow requirements for 5 rooms. Detailed input data is provided for the first room analyzed, including dimensions, construction materials, occupancy information, and indoor/outdoor design conditions. The report calculates both the sensible and total heat loads as well as the peak cooling and heating requirements for the building to size the appropriate AC system.