According to Le Chatelier's principle, when a system in equilibrium is subjected to a change, the system will shift its equilibrium position in a way that opposes the change. In the given reaction, lowering the temperature will cause the equilibrium to shift in the direction that produces heat.

The reaction is exothermic, meaning it releases heat. Therefore, lowering the temperature will cause the equilibrium to shift in the direction that produces heat, which is towards the products. In this case, the products are H2O and CO, so the equilibrium will shift to the right.