90.1-2019 Standard 90.1-2019 PRM doesn’t address buildings that are intended to have no HVAC system. Portions of a building with no heating and cooling system shall be simulated to be unconditioned for the baseline as well. Book traversal links for 2.7.3.1 No HVAC System Intended ‹ 2.7.3 Proposed Design with No HVAC, Lighting, SWH System or Receptacle Loads Up 2.7.3.2 No Lighting System Designed ›