the diagram illustrate various points of where heat is lost and energy is wasted due to air leakage. Also it highlights the location where air escapes or enter the house.
Overall , the house experiences air leakage from multiple locations, ranging from the roof to the foundation, which negative impact negatively energy efficiency. Heat predominant escape through openings in the upper sections, while cold tends to infiltrate through low areas , making temperature regulation more challenging. In the upper part of the house, significant heat loss through the attic hatch a, recessed lights, and plumbing stack vent, as well as through bath room and kitchen fan vents. these openings allow warm air to rise and exit, leading to substantial energy waste . Additionally chase, which house pipes and ducts, serve as another major point of air getting out the house.
The walls contain electrical outlets and recessed lights, which contribute to both air infiltration and exfiltration. Although these opening minor, they cumulatively lead to substantial energy loss over time. In contrast the lower section of the house allow cold air to get into through the crawl space dyer vent, and outdoor faucet. These areas facilitate unconditioned air seepage, making indoor temperature regulation more challenging and increasing heat costs.