Where should heated air ideally enter rooms in a warm air heating system?

In a warm air heating system, the ideal entry point for heated air into rooms is through baseboard registers located on the outside wall. This configuration takes advantage of the natural movement of warm air, as it rises and creates a circulation pattern throughout the space.

When warm air is introduced near the floor from the outside wall, it begins to rise, displacing cooler air and promoting even heat distribution throughout the room. This method also helps counteract drafts and maintains a comfortable temperature closer to where people typically sit or stand.

The outside wall is generally the coldest surface in a room, so introducing warm air there helps to effectively warm up the space from the ground up, enhancing comfort and efficiency. This method also aligns with principles of thermal dynamics, ensuring that heat is distributed efficiently and consistently.