HVAC Journeyman Practice Exam 2026 - Free HVAC Practice Questions and Study Guide

Duct insulation plays a crucial role in maintaining energy efficiency within HVAC systems. The statement that it reduces energy loss is accurate because well-insulated ducts help to minimize the amount of heat transfer between the air inside the ducts and the surrounding environment. Without adequate insulation, significant amounts of energy can be wasted as conditioned air is heated or cooled along its journey through the ductwork. Insulation maintains the temperature of the air, ensuring that systems work efficiently and effectively, thus helping to reduce energy bills and improve overall comfort in a space.

While there are considerations regarding fire safety, not all insulation necessarily needs to be fireproof. Additionally, while professional installation is recommended for optimal results, it is not a strict requirement. Lastly, condenser ducts are part of the system that benefits from insulation just like any other duct in the system; therefore, claiming that it is unnecessary for condenser ducts would not be accurate.