3.6 HVAC Zone Level Systems

This group of building descriptors relate to HVAC systems at the zone level. For purposes that have a baseline building there is not a one-to-one relationship between HVAC components in the proposed design and the baseline building since the baseline building system is determined from building type, size, and heating source. 

90.1-2019

This group of building descriptors relates to HVAC systems at the zone level. There is not a one-to-one relationship between HVAC components in the proposed design and the baseline building since the baseline building system is determined from building type, size, and climate zone. Additions and alterations should follow the same requirements stated for new construction proposed designs and new construction baseline buildings; unless otherwise noted in the descriptor. For unenclosed spaces such as parking garages, crawlspaces and attics, refer to Section 2.4.3 of this manual for modeling requirements.