Which types of buildings does ASHRAE Standard 62.1-2022 apply to?

• A. Outdoor structures and parking garages.
• B. Residential single-family homes only.
• C. New buildings, additions to existing buildings, and changes to existing buildings identified in the standard.
• D. Only new commercial buildings.

Answer: (C)

ASHRAE 62.1-2022 is a ventilation standard that governs how indoor air quality is achieved in enclosed spaces through proper ventilation design. Its scope includes new buildings, additions to existing buildings, and changes to existing buildings that are identified in the standard. So when you’re designing a building from the ground up, expanding it, or remodeling and altering its ventilation, this standard provides the required criteria. It doesn’t apply to outdoor structures or parking garages, and it isn’t limited to single-family homes or only to new commercial buildings. For residential single-family homes, other residential-focused standards apply.