Final answer:
To enhance furnace efficiency, the blower's startup is delayed with a timer, leading to more efficient heating and energy conservation.
Step-by-step explanation:
To increase furnace efficiency, the startup of the furnace blower is delayed using a timer. This component is typically part of the furnace's control system and it ensures that the blower does not start immediately when the furnace starts heating. By delaying the blower startup, the furnace can reach a more efficient operating temperature before circulating air. This helps with conserving energy and reducing the amount of fuel needed to maintain desired temperatures inside the home.