I installed a Rheem air conditioning system expecting reliable performance, especially during warmer months when consistent cooling matters most. Recently though, the unit started struggling to maintain normal indoor temperatures even while running for long periods. Airflow still works, but the cooling performance feels noticeably weaker compared to when the system was first installed. I checked filters and basic maintenance issues already, though nothing obvious explains the problem. For a major home system like this, I expected stronger long-term reliability without issues appearing so soon. Scheduling service appointments has also taken longer than expected during peak season. Has anyone else experienced cooling performance problems with Rheem systems recently?