HVAC Journeyman Practice Exam

What should be ensured when connecting ductwork to an HVAC system?

1. No gaps or leaks at the connection points

2. Ductwork must be insulated at all points

3. Ductwork should be painted for identification

4. All connections should be visible for inspection

The correct answer is: No gaps or leaks at the connection points

When connecting ductwork to an HVAC system, ensuring that there are no gaps or leaks at the connection points is crucial for maintaining system efficiency and performance. Proper sealing at the joints prevents air loss, which can lead to higher energy bills and decreased comfort levels in the space being conditioned. Gaps and leaks can allow conditioned air to escape and unconditioned air to infiltrate, reducing the overall effectiveness of the HVAC system. In HVAC systems, maintaining air pressure is vital for optimal airflow. Leaks can lead to inadequate air distribution, causing some areas of a building to be over-conditioned or under-conditioned. This not only affects comfort but can also place unnecessary strain on the HVAC equipment, potentially leading to premature failures or increased maintenance costs. While the other options may address important aspects of HVAC installation, they do not directly impact the immediate functioning and efficiency of the ductwork connections. Insulation is essential in certain applications to prevent heat loss, and visibility for inspection is beneficial for maintenance but does not pertain specifically to the integrity of the connection itself. Therefore, focusing on eliminating gaps and leaks is fundamental to ensuring that the HVAC system operates effectively and efficiently.