Annual maintenance contracts ensure that your air conditioning and heating equipment are properly inspected and serviced before the hot summer or cold winter months. You can rest easy knowing that your system is running efficiently, increasing your comfort level and reducing the chance of costly emergency boiler repair by at least 73%. The HVAC Service maintenance also includes a complete inspection of all moving parts, airflow alarms, drain position and free-flowing drainage systems, electrical components, thermostats, refrigerant charges (if applicable), an insulation check, and more.