Based on elevated "24V DC Cooling Fan" to increase the heat around the fan's own speed, while increasing air flow (exhaust volume). Using a thermostatically controlled fan to sense the temperature of the thermistor, is mounted on the fan hub sensor capable of detecting a temperature through the fan. In this configuration, the required DC fan is installed correctly, when the "24V DC Cooling Fan" installation is complete, the thermistor sensor wires through a special connection. In operation, a temperature-controlled fan will operate at a faster rate if the thermistors sense higher temperatures; and at lower temperatures, will operate at a lower speed; at these higher and lower intermediate, DC "24V DC Cooling Fan" speed will hardly change due to temperature.