The trickiest part of HVAC is just addressing the leaks at hidden locations.

[rQuestionEngineering]

The trickiest part of HVAC is just finding the leaks and patching it up where locations are tights and hidden.
The rest is just parts replacement.

 

[MadisonCameron]

Finding and repairing leaks in your HVAC system can truly be one of the most challenging tasks. This is because leaks are often located in hard-to-reach places and may not be noticeable at first glance.