Upon inspection, the blower speed was found to be set lower than optimal, which could affect system efficiency. Additionally, there were noticeable leaks around the doors and windows due to the absence of caulking. To address these issues, I adjusted the blower speed to a more suitable level, enhancing the system's performance. The customer has requested a new seal around the door and caulking for the windows to prevent further leaks. The HVAC system itself is functioning correctly, and these adjustments and future sealing will help maintain optimal performance.