What configuration is essential for condensate drain lines?

The correct answer highlights the importance of allowing for the clearing of blockages in condensate drain lines. Proper drainage is crucial in HVAC systems, as condensate is a byproduct of the cooling process. If the drain lines become blocked, it can lead to water backup, which may cause water damage, mold growth, or system malfunctions.

Incorporating features that facilitate the clearing of blockages ensures that any obstructions can be addressed quickly and effectively, maintaining the overall functionality and safety of the HVAC system. This involves designing the drain lines in a way that they can be easily accessed and serviced if needed, which is important for long-term maintenance and reliability of the system.

While other options like simplified joint connections, the ability to be easily relocated, and integrated filtration systems may have their own merits in different contexts, the central focus for condensate drain lines is the ability to prevent and address blockages efficiently to ensure proper drainage and system operation. This makes the correct choice crucial for maintaining a functional and safe HVAC setup.