Professional HVAC companies will offer a maintenance agreement to be sure your HVAC system is as efficient as possible. A good maintenance plan includes a full inspection and service of your HVAC system. Most annual plans divide the service between two visits per year. This way, you can ensure your AC system is in optimum condition when you need it most in summer, and your heating system is in optimum condition when you need it most in winter! Both services provide a thorough cleaning and inspection, servicing the moving parts of the system that is accessible, testing the appropriate components, and making adjustments as needed.