According to the second law of thermodynamics, heat moves from:

The second law of thermodynamics states that heat energy naturally flows from regions of higher temperature to regions of lower temperature. This principle explains why, for instance, if you place a hot cup of coffee on a table, the heat from the coffee will gradually dissipate into the cooler surrounding air until thermal equilibrium is reached. Essentially, heat transfer occurs spontaneously in the direction that increases entropy, or disorder, in a system.

In everyday terms, you can observe this phenomenon in many situations, such as feeling the warmth of a radiator (hot) compared to the cooler air in the room. This flow of heat from hot to cold is a fundamental principle that underpins many processes in thermodynamics, including heating systems, refrigeration, and weather patterns. Understanding this concept is crucial for building analysts, as it influences energy efficiency and thermal comfort in buildings.