Boston sits at sea level with average relative humidity above 60 percent year-round. That moisture infiltrates buildings through masonry walls and foundation cracks common in older structures. When you exhaust conditioned air without properly designed makeup air systems, you create negative pressure that pulls humid outdoor air into the building envelope. That moisture condenses inside wall cavities and ductwork, leading to mold growth and metal corrosion. Industrial exhaust solutions must account for dewpoint control and include dehumidification strategies or you simply move the moisture problem from one location to another.
Massachusetts enforces some of the strictest energy codes in the nation under 780 CMR, which mandates heat recovery on commercial exhaust systems above certain airflow thresholds. Boston's Inspectional Services Department requires detailed ventilation calculations and commissioning reports before issuing occupancy permits. Working with contractors who understand these local requirements prevents project delays and failed inspections. We maintain relationships with local plan reviewers and understand exactly what documentation they expect, which means your project moves through permitting efficiently and starts generating ROI faster.
