- ir Flushing (Post-Construction): This process removes construction-related contaminants (volatile organic compounds) by running the HVAC system to move a large volume of outdoor air—often over per of for area—before occupancy, while maintaining temperatures above and low humidity.
- System Types:
- Balanced Ventilation: Fresh air enters while an equal amount of stale air leaves, making it highly efficient for air exchange.
- Supply Ventilation: A fan forces filtered outdoor air into the building, creating positive pressure that pushes out stale air and limits infiltration of pollutants.
- Exhaust Ventilation: Fans remove polluted, damp air from areas like kitchens or baths, creating negative pressure.
- Energy/Heat Recovery (ERV/HRV): These systems, like those from Delta Electronics, transfer heat and/or moisture from exhaust air to incoming air, offering energy savings of up to 95% in heat recovery.