Cooling pad and fan systems provide effective evaporative cooling for greenhouses. Evaporative pads installed in sidewalls provide large wet surface area. Exhaust fans create negative pressure, pulling air through pads. Water recirculation system keeps pads consistently wet. Temperature reduction of 10-15 degrees achievable in dry climates. Automatic control maintains target temperatures. Pad maintenance includes regular cleaning and water treatment. Combined with shading, summer heat management becomes effective.