Start with Balanced Ventilation
Unlike exhaust-only fans that depressurize and pull humid outdoor air through cracks, a balanced ERV supplies and exhausts simultaneously, exchanging heat and some moisture for stable comfort. Size the ERV to ASHRAE rates, distribute supplies to living zones, and exhaust from baths, laundry, and a central return to avoid stagnant pockets.
Humidity Management
Pair the ERV with a ducted dehumidifier set to 45–50% RH, plumbed to a drain for hands-off operation. Maintain capillary and vapor breaks at the slab and walls so mechanical systems aren’t fighting ground moisture. In laundry nooks, consider a condensing dryer or dedicated make-up air if using a vented unit.
Filtration & Source Control
Use MERV-13 (or better) filtration on recirculating air handlers and seal ductwork to stop dust bypass. Choose low-VOC paints, formaldehyde-free substrates, and solvent-free adhesives so the baseline IAQ is clean before mechanical help. Add CO/CO₂ sensors and place return grilles away from potential odor sources like sump closets.
Quiet, Serviceable, and Safe
Mount the ERV on isolation hangers, route condensate with cleanouts, and provide service clearances and a filter-change schedule. Bath fans should be continuous-rated, low-sone models on timers or humidity controls for post-shower purge.
For a durable, healthy plan that integrates ERV, dehumidification, and materials selection, review our NYC basement remodeling ventilation and air quality.