The answer to 'tune-up not heating' is that a failed tune-up is a common cause of an HVAC system not heating properly. During a tune-up, the technician inspects, cleans, and adjusts various components to ensure the system is running efficiently. If the tune-up was not performed correctly or some parts were not addressed, it can lead to issues with the system's heating capabilities.
Some common symptoms of a tune-up issue include inconsistent heating, reduced airflow, or the system not turning on at all. In many cases, this can be resolved by having a professional HVAC technician perform a more thorough inspection and tune-up. They can identify any underlying problems, make necessary repairs, and ensure the system is operating at peak efficiency.