What is the relationship between duct size and airflow efficiency?

The relationship between duct size and airflow efficiency is critical in HVAC systems. Proper sizing is essential for achieving optimal efficiency because ducts that are too small can restrict airflow, leading to increased pressure drops. This restriction can cause the system to work harder, reducing overall efficiency and increasing operational costs. Conversely, ducts that are too large can result in lower air velocity, which might lead to issues such as uneven airflow and insufficient air distribution throughout the space.

Efficient airflow optimizes energy use and maintains consistent temperatures across various areas in a building. Therefore, ensuring that ducts are neither too large nor too small but sized appropriately according to the system's requirements and the space they serve is key to maintaining energy efficiency and comfort. This careful consideration of duct sizing helps balance the system's pressure, volume, and temperature, contributing positively to overall performance and efficiency.