PC Enthusiast Builds External Water Cooling Loop to Vent Heat Outside

Tired of his PC heating up his room during the winter, a modder known on Reddit as u/Motor_Attention1865 built an automated split cooling system that routes liquid coolant to a radiator placed outside. The setup uses an Arduino Mega and several temperature and humidity sensors to control a motorized three-way valve, ensuring the system kicks on only when extra cooling is needed. To prevent potentially component-damaging condensation, the Arduino constantly monitors the dew point and ambient conditions, closing off the outdoor radiator if the coolant gets too cold. The custom build features high-end water-cooling components for both the CPU and GPU, combining clever programming with heavy-duty hardware to manage temperatures.