Where is the typical location for floor supply registers in a residential HVAC system?

The typical location for floor supply registers in a residential HVAC system is on exterior walls under windows. This positioning is crucial for effective heating and cooling. When warm air is supplied through registers located under windows, it counteracts cold drafts that may enter from poorly insulated or single-pane windows. Additionally, placing registers under windows helps create a layer of warm air that can rise and circulate, assisting in maintaining a consistent temperature throughout the room.

This placement is not only practical but also strategically designed to improve comfort. By ensuring that warm air is delivered directly into colder zones during winter, it minimizes cold spots near windows and enhances overall heating efficiency. Similarly, in the summer, cold air from the HVAC system can cool the air near the windows effectively, tackling the heat gain from sunlight.

In contrast, other choices may not provide the same level of comfort or energy efficiency. For instance, placing registers on interior walls out of drafts may result in insufficient heating in colder areas of the home. Similarly, registers located in front of doors could become obstructed, reducing airflow and efficiency.