22 00 00 Plumbing22 11 00 Facility Water Distribution22 30 00 Plumbing Equipment22 40 00 Plumbing Fixtures23 00 00 Heating, Ventilating, and Air Conditioning23 00 01 Operation and Maintenance of HVAC Systems23 09 00 Instrumentation and Control for HVAC23 30 00 HVAC Air DistributionConstruction ManagementDesign BuildIndustrial Contractor