Nate Core Practice Test 2026 - Free Practice Questions and Study Guide

Duct leaks negatively impact energy efficiency primarily because they allow conditioned air to escape from the duct system before it reaches its intended destination in the building. When there are leaks within the ductwork, heated or cooled air can escape into unconditioned spaces, which leads to an overall loss of efficiency.

As a result, the HVAC system has to work harder and longer to maintain the desired indoor temperature. This increased workload translates to higher energy consumption, as more energy is required to circulate and condition the air to compensate for the lost airflow. Over time, this can result in significantly increased utility bills and a greater environmental impact due to higher energy use.

Additionally, leaks can create imbalances in air pressure within the system, which can lead to further inefficiencies and discomfort in the building. Therefore, addressing duct leaks is crucial to enhance energy efficiency and maintain a comfortable indoor environment.