Oversized returns diminish noise and pressure; adjusting go back plenums adds to furnace expenses but improves airflow

https://privatebin.net/?fbb93126d549cbfb#JC8GzX7A4iFJdhz7cMNWwPwXACbGHMbVBsRcdtucWZeW

Oversized returns scale back noise and strain; adjusting return plenums adds to furnace expenditures yet improves airflow and luxury at cut back fan speeds.