How many BTU are required to cool a 12 x 24 room?

To calculate the BTU needed to cool a 12 x 24 room, you first find the area, which is 288 square feet. A general rule of thumb is to use about 20 BTU per square foot for cooling. Therefore, for this room, you would need approximately 5,760 BTU (288 sq ft x 20 BTU). However, factors like ceiling height, insulation, and sunlight exposure may require adjustments to this estimate.