Division 23 - Heating, Ventilating, and Air Conditioning

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​​​​​​​​​​​​​​​​DISC​​​​LAIMER: These files are intended for use by consultants to the State of Wisconsin and by others for construction and remodeling of State owned facilities. The State of Wisconsin bears no liability nor responsibility for any other use of these files.​ At the ​start of each project, consultants must download the current revision of all applicable files.​​

NOTE: ​Microsoft Edge is unable to download individual files but is able to download the zip folders. Please use Google Chrome to download individual files.​​​

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D​esign Guide​​lines

​File​

​​Revision Date

HVAC Design Guidelines​

​6/24/2026

​Mechanical System Naming Conventions

​12/6/2023

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Sp​​ecificatio​​ns​​​

​​File​

​Revision Date

​Division 23 All Specifications

​10/7/2026

23 01 30.51 - HVAC Air Duct Cleaning

​10/1/2012

​23 05 00 - Common Work Results for HVAC

3/28/2022

​23 05 13 - ​Common Motor Requirements for HVAC Equipment​​

​12/20/2023

​23 05 14 - Variable Frequency Drives

9/8/2026

​23 05 15 - Piping Specialties

​10/7/2026

​23 05 23 - ​General Duty Valves for HVAC

6/24/2025

​23 05 29 - ​Hangers and Supports for HVAC Piping and Equipment​​

​11/10/2025

​23 05 48 - Vibration and Seismic Controls for HVAC Piping and Equipment​

​11/9/2023

​23 05 93 - ​Testing, Adjusting, and Balancing for HVAC

9/23/2024

​23 07 00 - HVAC Insulation

​9/8/2026

​23 08 00 - ​Commissioning of HVAC​​

​1/17/2017

​23 09 14 - Pneumatic and Electric Instrumentation and Control Devices for HVAC

7/2/2026

​23 09 15 - Direct Digital Control Input/Output Point Summary Tables

​10/7/2025

​23 09 23 - ​Direct Digital Control System for HVAC​

8/5/2026

​23 09 ​24 - Direct Digital Control System for HVAC (for informational purposes only)

​7/2/2026

​23 09 93 - Sequence of Operations for HVAC Controls​​

11/6/2025

​23 11 00 - Facility Fuel Piping

​10/25/2016

​23 12 13 - ​Facility Fuel Oil Pumps​

​10/1/2012

​23 15 13 - Utility Compressed Air Piping

​5/9/2022

​23 21 13 - Hydronic Piping

4/14/2026

​23 21 23 - Hydronic Pumps​

​11/15/2019

​23 21 23.13 - Hydronic Pumps for Utilities​

​11/10/2025

​23 22 13 - Steam and Condensate Heating Piping

​4/14/2026

​23 22 13.13 - Underground Steam and Condensate Heating Piping

4/14/2026

​23 22 13.16 - Underground Hot Water Heating Piping

12/20/2023

​23 22 23 - Steam Condensate Pumps

​7/2/2026

​23 23 00 - Refrigerant Piping​

​10/7/2025

​23 24 00 - Internal Combustion Engine Piping

​10/1/2012

​23 25 00 - ​HVAC Water Treatment​​

​11/29/2023

​23 30 16 - ​Sump Pumps for Utilities​​

​3/25/2025

​23 31 00 - HVAC Ducts and Casings​

​9/13/2024

​23 33 00 - Air Duct Accessories

​9/13/2024

​23 34 00 - HVAC Fans

​4/5/2017

​23 36 00 - Air Terminal Units

7/11/2023

​23 37 13 - Diffusers, Registers, and Grilles

​7/11/2023

​23 41 00 - ​Particulate Air Filtration

12/28/2017

​23 51 00 - Breechings, Chimneys, and Stacks​

​5/12/2026

​23 52 00 - Heating Boilers

​3/7/2023

​23 53 00 - ​Heating Boiler Feedwater Equipment​​

​10/1/2012

​23 54 00 - Gas Fired Furnaces

​2/24/2026

​23 55 00 - Fuel Fired Heaters

​10/1/2012

​23 57 00 - Heat Exchangers for HVAC​

​12/12/2024

​​23 62 13 - ​Packaged Air-Cooled R​efrigerant Compressor and Condensing Units​

​10/22/2025

​23 64 15 - Water Cooled Chillers

​12/20/2017

​23 65 00 - Cooling Towers

​5/8/2020

​23 72 00 - ​Air-to-Air Energy Recovery Equipment​​

​12/4/2023

​23 73 12 - Air Handling Unit Coils

​10/25/2025

​23 73 13 - ​Modular Indoor Central-Station Air-Handling Units

1/17/2026

​23 73 23 - ​Factory Fabricated Custom Air Handling Units​

11/6/2025

​23 73 24 - Factory Fabricated Custom Laboratory Exhaust Energy Recovery Units

10/25/2025

​23 81 26 - Split-System Ductless Air-Conditioners

10/22/2025

​23 82 00 - ​Heating and Cooling Terminal Units

​2/20/2026

​23 84 13 - Humidifiers​

​10/1/2012

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​De​​tails

​File​​​​

​Revision Date

​​Division 23 All Details

​2/19​/2026​

​​Coil Piping Detail A (.DWG)

​8/1/2024

​Coil Piping Detail B (.DWG)

​​3/3/2020

​HVAC Roofing Detail A (.DWG)

2/24/2020

​HVAC Roofing Detail B (.DWG)

​​2/19/2026

​HVAC Schedules

​​4/7/2017

​Hydronic Pump Detail (.DWG)

11/10/2025

​Steam Anchor Detail (.DWG)

​​10/23/2023

​Steam Piping Detail A (.DWG)

​5/20/2025

​Stea​​m Piping Detail B (.DWG)

​10/8/2024

​Steam Pressure Reducing Valve Detail (.DWG)

​11/6/2018

​Steam Support Detail (.DWG)

​10/23/2023

​Sump Pump Detail (.DWG)

​​​3/25/2025​​

Terminal Unit Detail A (.DWG)

​​12/14/2015​

​Terminal Unit Detail B (.DWG)

​​​5/23/2022

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