What is a Precision Tune-up and how much does it cost?Besides the professional visual inspection included with our System Inspection, a Precision Tune-up also consistes of a total maintenance cleaning and lubrication of the heating or air conditioning equipment components. Learn more here about D.A. Bennett Service Experts Heating & Air Conditioning’s Precision Tune-up steps . The fee for a tune-up changes depending on the season, and may generally vary from $69 to $159. Printable coupons with seasonal discounts on tune-ups may be found on our Coupons page.