The answer to 'best tune-up' is a comprehensive HVAC system tune-up performed by a licensed and experienced HVAC technician. This involves a thorough inspection, cleaning, and adjustment of all components to ensure your system is operating at peak efficiency. This includes checking refrigerant levels, cleaning the coils, inspecting and replacing air filters, testing electrical connections, and more.
A professional tune-up can extend the lifespan of your HVAC system, improve indoor air quality, and reduce your energy costs by up to 30%. It's recommended to have your system tuned-up once a year, typically in the spring before the heavy cooling season.