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I arrived promptly to address the heating issue reported by the customer. Upon inspection, I identified a malfunctioning thermostat as the root cause. I replaced the faulty thermostat with a new one, ensuring it was properly calibrated to maintain optimal temperature settings. Additionally, I conducted a thorough check of the heating system to ensure all components were functioning correctly. The customer was informed about the work done and the expected improvements. Although the customer was not at home, I left detailed instructions for them to follow once they returned. Payment details will be sent via email and text.

Upon arrival, I found the air handler non-operational. Conducting a diagnostic inspection, I identified a failed 3-amp low-voltage fuse on the control board as the issue. I replaced the blown fuse and tested the system. The air handler started and operated normally. I monitored the system for a period to ensure stability and no further issues were detected. My recommendation is to replace the 3A fuse and continue monitoring the system's performance.

Upon receiving the customer's report about inadequate cooling in the main bedroom compared to other areas, I conducted a comprehensive inspection. The air filter was clean, and the air ducts were free from any crimps or blockages. I measured the static pressure at 0.33, which is significantly below the system's maximum external static pressure of 0.8, confirming robust airflow capacity. Temperature differentials were tested at 18 degrees, indicating strong airflow. Despite the system performing well, the customer expressed a desire for improved airflow to the bedroom. To address this, I recommended installing an additional air duct specifically for that room to enhance cooling efficiency.

Prejob engineering

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