HomeKnowledgeIECC Section 1405 — Automatic Control of Mechanical Ventilation
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IECC Section 1405 — Automatic Control of Mechanical Ventilation

Updated Apr 3, 2026
Requires ventilation systems to adjust for occupancy and indoor air quality.

Section 1405 specifies that mechanical ventilation systems should use controls to optimize energy use while maintaining adequate air quality. Occupancy sensors reduce ventilation when spaces are unoccupied. Carbon dioxide sensors can modulate ventilation based on occupant density. Demand-controlled ventilation reduces energy consumption compared to continuous operation. Time-of-day scheduling can reduce ventilation during off-hours.

TAGS
ieccventilationcontrols
DETAILS
section
1405
category
Mechanical Systems
code body
IECC
code year
2021
SOURCES
🔗https://codes.iccsafe.org/content/IECC2021P1
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