A: Yes! For a variety of reasons, burner control shifts as operating conditions change and controls drift. Mechanical devices have components that age over time. Elastomers deteriorate and often become stiffer, electronic controls drift with age, bearings and moving points wear out and become loose. Annual tuning returns processes to their operating designs, upholds efficiency, curbs excessive fuel usage, maintains emissions, and identifies wearing components that may need to be changed or updated for preventative maintenance.