ASHRAE Standard 62.2Referenced in International Residential Code (IRC)
Ventilation and Acceptable Indoor Air Quality in Residential Buildings
Issuing Organization: American Society of Heating, Refrigerating and Air-Conditioning Engineers
Edition: 2022 Edition
Verified: 2026-09-01
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Regulatory Scope & Application
Defines roles of and minimum requirements for mechanical and natural ventilation systems and the building envelope to provide acceptable indoor air quality in residential buildings.
Key Engineering & Life Safety Requirements:
- Sets baseline cubic-feet-per-minute (CFM) mechanical whole-home continuous air exchange rates.
- Mandates local exhaust ventilation: minimum 100 CFM intermittent or 20 CFM continuous for kitchens; 50 CFM intermittent or 20 CFM continuous for bathrooms.
- Mandates particulate filtration of at least MERV 13 for recirculating central systems.
Full consensus documentation available via standard catalogView Official Standard Specification
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When to Contact a Qualified Professional: Code Compliance & Safety Audit
While understanding building standards and hazard mechanics helps protect your family, diagnostic testing and repair of combustion appliances, gas lines, electrical distribution, and structural foundations must only be performed by licensed and bonded contractors.
Critical Indicators Requiring Immediate Certified Trade Intervention:
- Jurisdictional verification of adopted NFPA/UL standards.
- Decibel acoustic audit for hardwired interconnected alarms.
- Certification of sensor expiration dates and branch circuit bonding.
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