How Airtightness Affects HVAC Design – Guide for Mechanical Engineers
Understanding the relationship between building airtightness and HVAC system sizing, energy efficiency, and occupant comfort.
The HVAC-Airtightness Relationship
Building airtightness significantly impacts HVAC system sizing, energy consumption, and occupant comfort. A well-sealed building allows mechanical ventilation to be precisely controlled, improving air quality and reducing energy waste.
Key Considerations for Designers
When designing HVAC systems for highly airtight buildings, it is essential to account for controlled mechanical ventilation with heat recovery (MVHR), positive pressure balancing, and commissioning testing after installation.
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