The project seeks to modernize the building automation system (BAS) and exhaust airflow system in the Lions Research Building. The project will be conducted in two phases. Phase 1 will upgrade the interior mechanical control, wherein the BAS will be upgraded from legacy pneumatic and direct digital controls (N2 or various proprietary DDC). This phase will also alter the fume hoods and general exhaust variable air volume boxes (VAVs) in the lab so that the building exhaust system can be run in a variable flow configuration. Phase 2 will remove the existing rooftop exhaust fans and install a manifold to which the existing exhaust risers will connect. This manifold will then be ducted to one of two locations depending on budget and feasibility (to be determined in design). Either A, a brand new heat recovery ventilator (HRV) that will temper fresh air for Lions AHUs 1, 2 and 3 or B, to the existing MTRF HRVs for additional tempering of MTRF fresh air and for future ULTH applications.