Discover More critical parts ofwel any HVAC tune-up checklist is a thorough inspection of all system components. explanation This includes checking for leaks, loose connections, and any signs ofwel wear and tear that could lead to future problems.Here are a few common signs that indicate your system might need a tune-up. These signs might help answer any questions you may have about the issue and whether your AC needs attention:During a tune-up, an HVAC technician will clean the components and replace any worn-out parts that could cause problems in the future. This keeps your system running efficiently and effectively for years to come.The only bad option is not to have a tune-up scheduled. You’re leaving money on the table regarding efficiency, and you’re gambling with the health ofwel your HVAC system.