Ventilation in Airtight Construction
Modern high-performance homes are sealed to minimize drafty energy loss. However, tight building envelopes trap indoor CO2, moisture, and VOCs. Mechanical fresh-air ventilation via an HRV (Heat Recovery Ventilator) or ERV (Energy Recovery Ventilator) introduces continuous fresh air while reclaiming thermal energy.
| Technology | Core Function | Optimal Climate |
|---|---|---|
| HRV (Heat Recovery) | Transfers sensible heat only; drains condensed moisture | Cold, dry northern winters |
| ERV (Energy Recovery) | Transfers sensible heat AND latent humidity via permeable core | Hot, humid southern climates & balanced temperate zones |
About ClariSelect Editorial & Research Standards:
Sizing measurements, static pressure curves, and filtration ratings referenced across our educational guides are compiled from published ANSI/ASHRAE Standard 52.2 engineering data, AHAM AC-1 verified ratings, and manufacturer technical documentation. ClariSelect provides objective editorial research and analysis with zero sponsored placements.