The answer to 'why is my maintenance' is that there are several common causes for HVAC maintenance issues, including dirty air filters, lack of professional tune-ups, and wear and tear on components. Symptoms can include poor airflow, increased energy bills, and reduced heating/cooling performance. Solutions may involve cleaning or replacing air filters, scheduling professional maintenance, or replacing worn parts.
It's important to address HVAC maintenance issues promptly, as they can lead to more serious and costly problems down the line. While some minor tasks like changing air filters can be done DIY, most HVAC maintenance and repair work should be handled by a licensed professional technician for safety and to ensure the system is properly serviced.