A. The Mechanical Contractor shall employ a testing and balancing firm specializing in total system testing and balancing. The balancing firm shall provide all labor, equipment, engineering and test equipment required to test, adjust, and balance all heating, ventilating, air-conditioning, and exhaust systems as hereinafter specified. B. The Mechanical Contractor shall provide a letter to the Owner stating the system(s) are complete and ready for test and balance. C. Any corrective action shall be completed by the Mechanical Contractor and the systems retested. D. The systems shall be balanced in the season of maximum cooling load and in the season of maximum heating load. Season 1 balancing shall occur prior to Owner’s acceptance of the building. Season 2 balancing shall occur within 180 days of season 1 balancing and when outdoor ambient temperatures are 88 degrees Fahrenheit or higher for maximum cooling load and 40 degrees or lower for maximum heating load...