UFGS Master Updated February 12, 2025; Posted February 20, 2025

Unified Facilities Guide Specifications (UFGS) are a joint effort of the U.S. Army Corps of Engineers (USACE), the Naval Facilities Engineering Systems Command (NAVFAC), and the Air Force Civil Engineer Center (HQ AFCEC). UFGS are for use in specifying construction for the military services.

The UFGS are only published in electronic format and are intended to be used with SpecsIntact software; SpecsIntact supports the UFGS format. The UFGS Master complies with UFC 1-300-02.

Questions, comments, suggestions and recommended changes for guide specifications should be submitted as a Criteria Change Request (CCR). To submit, click on the CCR link next to the document title (below). CCRs are not appropriate when they pertain to a specific project solicitation, request for proposal, or after a project award. Questions or interpretations pertaining to these documents or situations should be referred to the Contracting Officer. To view the UFGS modification classifications and examples, see the UFGS Revision-Change Policy .

Active documents are available in the following formats:  SpecsIntact (SEC) in compressed ZIP  |  Adobe Acrobat (PDF)

Archived release files are available in Adobe Acrobat (PDF) in compressed ZIP

 Indicates the UFGS has an attachment. Click the title to view the attachment under 'Related Materials'.

? Active: Document is current, regularly maintained by the responsible DWG through formal revisions and changes, and must be used in accordance with its applicability paragraphs.

Archived: Document is outdated or superseded and not maintained. Prohibited for use in new projects. Available only for historical reference or for existing projects that previously cited the document before archival.


Title Date View CCR
UFGS 22 07 19 Plumbing Piping Insulation  
UFGS 22 10 00.00 10 Vertical Pumps, Axial-Flow and Mixed-Flow Impeller-Type  
UFGS 22 10 00.00 40 Plumbing Piping and Pumps  
UFGS 22 11 23.00 10 Submersible Pump, Axial-Flow and Mixed-Flow Type  
UFGS 22 13 23 Sewage Bar Screen and Mechanical Shredder  
UFGS 22 13 29 Sanitary Sewerage Pumps   View/Download  |View/Download   CCR  
UFGS 22 13 36 Pneumatic Sewage Ejectors  
UFGS 22 14 29 Sump Pumps  
UFGS 22 14 29.00 Sump Pumps   View/Download  |View/Download   CCR  
UFGS 22 15 00.00 40 Low Pressure Compressed-Air Systems  
UFGS 22 15 00.13 40 High Pressure Compressed-Air Systems  
UFGS 22 15 09 General Service Compressed-Air Systems Cleaning Procedures  
UFGS 22 15 13.00 40 High Pressure Compressed Air  
UFGS 22 15 13.16 High-Pressure Compressed-Air Piping, Piping Components, and Valves, Stainless  
UFGS 22 15 14 General Service Compressed-Air Systems, Low Pressure  
UFGS 22 15 14.00 40 General Service Compressed-Air Systems, High Pressure  
UFGS 22 15 19.13 20 Large Nonlubricated Reciprocating Air Compressors (Over 300 HP)   View/Download  |View/Download   CCR  
UFGS 22 15 19.19 20 Nonlubricated Rotary Screw Air Compressors (100 HP and Larger)   View/Download  |View/Download   CCR  
UFGS 22 15 26.00 20 High and Medium Pressure Compressed Air Piping   View/Download  |View/Download   CCR  
UFGS 22 16 19.26 20 Large Centrifugal Air Compressors (Over 200 HP)   View/Download  |View/Download   CCR  
UFGS 22 31 00 Water Softeners, Cation-Exchange (Sodium Cycle)   View/Download  |View/Download   CCR  
UFGS 22 33 30.00 10 Solar Water Heating Equipment   View/Download  |View/Download   CCR  
UFGS 22 41 00.00 40 Residential Plumbing Fixtures  
UFGS 22 42 00.00 40 Commercial Plumbing Fixtures  
UFGS 22 60 70 Gas and Vacuum Systems for Healthcare Facilities   View/Download  |View/Download   CCR  
UFGS 22 62 13.00 20 Medical Gas and Vacuum Piping  
UFGS 22 66 53 Laboratory Chemical-Waste and Vent Piping  
UFGS 22 66 83.00 40 Chemical-Waste Tanks  
DIVISION 23 - HEATING, VENTILATING, AND AIR CONDITIONING   ZIP  
UFGS 23 00 00 Air Supply, Distribution, Ventilation, and Exhaust Systems  
UFGS 23 00 00.00 40 Heating, Ventilating, and Air Conditioning  
UFGS 23 01 30.41 HVAC System Cleaning   View/Download  |View/Download   CCR  
UFGS 23 03 00.00 20 Basic Mechanical Materials and Methods   View/Download  |View/Download   CCR  
UFGS 23 05 00.00 40 Common Work Results for HVAC  
UFGS 23 05 15 Common Piping for HVAC   View/Download  |View/Download   CCR  
UFGS 23 05 48 Vibration and Seismic Controls for HVAC Piping and Equipment  
UFGS 23 05 48.19 Seismic Bracing for HVAC   View/Download  |View/Download   CCR  
UFGS 23 05 93 Testing, Adjusting, and Balancing for HVAC   View/Download  |View/Download   CCR  
UFGS 23 05 93.00 10 Testing, Adjusting, and Balancing of HVAC Systems  
UFGS 23 05 93.00 40 Testing, Adjusting, and Balancing for HVAC Systems  
UFGS 23 07 00 Thermal Insulation for Mechanical Systems   View/Download  |View/Download   CCR  
UFGS 23 07 13.00 40 Duct Insulation  
UFGS 23 08 00 Commissioning of Mechanical[ and Plumbing] Systems   View/Download  |View/Download   CCR  
UFGS 23 08 00.00 10 Commissioning of HVAC Systems  
UFGS 23 08 00.00 20 Commissioning of Mechanical[ and Plumbing] Systems  
UFGS 23 08 01.00 20 Testing Industrial Ventilation Systems   View/Download  |View/Download   CCR  
UFGS 23 09 00 Instrumentation and Control for HVAC   View/Download  |View/Download   CCR  
UFGS 23 09 13 Instrumentation and Control Devices for HVAC   View/Download  |View/Download   CCR  
UFGS 23 09 13.33 40 Control Valves  
UFGS 23 09 13.34 Control Valves, Self-Contained  
UFGS 23 09 23 LonWorks Direct Digital Control for HVAC and Other Building Control Systems  
UFGS 23 09 23.01 Lonworks Direct Digital Control for HVAC and Other Building Control Systems   View/Download  |View/Download   CCR  
UFGS 23 09 23.02 BACnet Direct Digital Control for HVAC and Other Building Control Systems   View/Download  |View/Download   CCR  
UFGS 23 09 23.13 20 BACnet Direct Digital Control Systems for HVAC  
UFGS 23 09 33.13 40 Electric Control System for HVAC  
UFGS 23 09 53.00 20 Space Temperature Control Systems   View/Download  |View/Download   CCR  
UFGS 23 09 54.00 20 Direct Digital Control Systems  
UFGS 23 09 93 Sequences of Operation for HVAC Control   View/Download  |View/Download   CCR  
UFGS 23 10 00 Fuel Storage Systems  
UFGS 23 11 13.00 20 Fuel Oil Piping  
UFGS 23 11 16.00 20 Fiberglass Reinforced Plastic (FRP) Piping (for Petroleum)  
UFGS 23 11 20 Facility Gas Piping   View/Download  |View/Download   CCR  
UFGS 23 11 23.00 10 Gas Piping System  
UFGS 23 11 23.00 40 Facility Natural-Gas Piping  
UFGS 23 11 25 Facility Gas Piping  
UFGS 23 12 16.00 20 Gasoline / Diesel Dispensing Systems  
UFGS 23 14 00 Commissioning of Fuel Facility Systems  
UFGS 23 20 00.00 40 HVAC Piping and Pumps  
UFGS 23 21 13.00 20 Low Temperature Water (LTW) Heating System   View/Download  |View/Download   CCR  
UFGS 23 21 13.23 20 [High] [Medium] Temperature Water System Within Buildings   View/Download  |View/Download   CCR  
UFGS 23 21 23 Hydronic Pumps   View/Download  |View/Download   CCR  
UFGS 23 22 00.00 40 Steam and Condensate Piping and Pumps  
UFGS 23 22 13.13 40 Steam and Condensate Heating Piping  
UFGS 23 22 13.35 Steam Traps  
UFGS 23 22 23 Steam Condensate Pumps  
UFGS 23 22 25 Steam Valves  
UFGS 23 22 26.00 20 Steam System and Terminal Units   View/Download  |View/Download   CCR  
UFGS 23 23 00 Refrigerant Piping   View/Download  |View/Download   CCR  
UFGS 23 23 16.00 40 Refrigerant Piping Specialties  
UFGS 23 25 00 Chemical Treatment of Water for Mechanical Systems   View/Download  |View/Download   CCR  
UFGS 23 30 00 HVAC Air Distribution   View/Download  |View/Download   CCR  
UFGS 23 30 13.00 20 Ductwork and Ductwork Accessories  
UFGS 23 31 11.11 40 Ducts, Low Pressure  
UFGS 23 31 11.12 40 Ducts, Medium/High Pressure  
UFGS 23 31 13 Metal Ducts  
UFGS 23 31 13.20 40 Welding Metal Ductwork  
UFGS 23 33 56 Self-Acting Blast Valves  
UFGS 23 34 16.00 20 Air Handling Units  
UFGS 23 34 23 HVAC Power Ventilators  
UFGS 23 35 00.00 10 Overhead Vehicle Tailpipe [and Welding Fume] Exhaust Removal System(s)  
UFGS 23 35 16 Mechanical Engine[ and Welding Fume] Exhaust Systems   View/Download  |View/Download   CCR  
UFGS 23 35 19.00 20 Industrial Ventilation and Exhaust   View/Download  |View/Download   CCR  
UFGS 23 36 00 Air Terminal Units  
UFGS 23 37 13 Diffusers, Registers, and Grills  
UFGS 23 37 23.00 40 HVAC Gravity Ventilators  
UFGS 23 40 00.00 10 Chemical, Biological, and Radiological (CBR) Air Filtration System  
UFGS 23 41 13 Panel Filters  
UFGS 23 44 00.00 10 Chemical, Biological, and Radiological (CBR) Air Filtration System   View/Download  |View/Download   CCR  
UFGS 23 50 52.00 10 Central High Temperature Water (HTW) Generating Plant and Auxiliaries   View/Download  |View/Download   CCR  
UFGS 23 51 43.00 20 Dust and Gas Collector, Dry Scrubber and Fabric Filter Type   View/Download  |View/Download   CCR  
UFGS 23 51 43.01 20 Mechanical Cyclone Dust Collector of Flue Gas Particulates   View/Download  |View/Download   CCR  
UFGS 23 51 43.02 20 Electrostatic Dust Collector of Flue Gas Particulates   View/Download  |View/Download   CCR  
UFGS 23 51 43.03 20 Fabric Filter Dust Collector of Fly Ash Particles in Flue Gas   View/Download  |View/Download   CCR  
UFGS 23 52 00 Heating Boilers   View/Download  |View/Download   CCR  
UFGS 23 52 00.00 10 Water and Steam Heating; Oil, Gas or Both; Up to 20 MBTUH  
UFGS 23 52 00.00 40 Heating Boilers  
UFGS 23 52 30.00 10 Heat Recovery Boilers   View/Download  |View/Download   CCR  
UFGS 23 52 30.01 10 Central Coal-Fired Steam-Generating System   View/Download  |View/Download   CCR  
UFGS 23 52 30.02 10 Central Steam Generating System - Combination Gas and Oil Fired   View/Download  |View/Download   CCR  
UFGS 23 52 33.01 20 Steam Heating Plant Watertube (Shop Assembled) Coal/Oil or Coal   View/Download  |View/Download   CCR  
UFGS 23 52 33.02 20 Steam Heating Plant Watertube (Field Erected) Coal/Oil or Coal   View/Download  |View/Download   CCR  
UFGS 23 52 33.03 20 Water-Tube Boilers, Oil/Gas or Oil   View/Download  |View/Download   CCR  
UFGS 23 52 43.00 10 Heat Recovery Boilers  
UFGS 23 52 43.00 20 Low Pressure Water Heating Boilers (Under 800,000 BTU/HR Output)   View/Download  |View/Download   CCR  
UFGS 23 52 46.00 20 Low Pressure Water Heating Boilers (Over 800,000 BTU/HR Output)   View/Download  |View/Download   CCR  
UFGS 23 52 49.00 20 Steam Boilers and Equipment (500,000 - 18,000,000 BTU/HR)   View/Download  |View/Download   CCR  
UFGS 23 52 53.00 20 Steam Boilers and Equipment (18,000,000 - 60,000,000 BTU/HR)   View/Download  |View/Download   CCR  
UFGS 23 54 16.00 10 Heating System; Gas-Fired Heaters  
UFGS 23 54 19 Building Heating Systems, Warm Air   View/Download  |View/Download   CCR  
UFGS 23 55 13.00 40 Fuel-Fired Duct Heaters  
UFGS 23 57 10.00 10 Forced Hot Water Heating Systems Using Water and Steam Heat Exchangers   View/Download  |View/Download   CCR  
UFGS 23 58 00.00 10 Central Steam Heating and Utilities Systems   View/Download  |View/Download   CCR  
UFGS 23 61 00.00 40 Refrigerant Compressors  
UFGS 23 63 00.00 10 Cold Storage Refrigeration Systems  
UFGS 23 63 00.00 Cold Storage Refrigeration Systems   View/Download  |View/Download   CCR  
UFGS 23 64 00 Packaged Water Chillers, Absorption Type  
UFGS 23 64 00.00 10 Liquid Chillers  
UFGS 23 64 10 Water Chillers, Vapor Compression Type   View/Download  |View/Download   CCR  
UFGS 23 64 26 Chilled, Chilled-Hot, and Condenser Water Piping Systems   View/Download  |View/Download   CCR  
UFGS 23 65 00 Cooling Towers and Remote Evaporatively-Cooled Condensers   View/Download  |View/Download   CCR  
UFGS 23 65 00.00 10 Cooling Tower  
UFGS 23 66 00.00 20 Central Refrigeration Equipment for Air Conditioning  
UFGS 23 69 00.00 20 Refrigeration Equipment for Cold Storage   View/Download  |View/Download   CCR  
UFGS 23 70 01.00 10 Central Steam-Generating System, Coal-Fired  
UFGS 23 70 02.00 10 Central Steam Generating System - Combination Gas and Oil Fired  
UFGS 23 70 03.00 10 Heating and Utilities Systems, Central Steam  
UFGS 23 71 19 Thermal Energy Storage System: Ice-On-Coil   View/Download  |View/Download   CCR  
UFGS 23 72 00 Energy Recovery Systems   View/Download  |View/Download   CCR  
UFGS 23 72 26.00 10 Desiccant Cooling Systems  
UFGS 23 73 00.00 40 Indoor Central-Station Air-Handling Units  
UFGS 23 73 00.13 40 Modular Indoor Central-Station Air-Handling Units  
UFGS 23 73 13 Modular Indoor Central-Station Air-Handling Units  
UFGS 23 73 33.00 40 Indoor Indirect Fuel-Fired Heating and Ventilating Units  
UFGS 23 74 33 Dedicated Outdoor Air Systems (DOAS)   View/Download  |View/Download   CCR  
UFGS 23 75 15 Custom-Packaged, Aircraft Pre-Conditioned Air Units   View/Download  |View/Download   CCR  
UFGS 23 76 00 Evaporative Cooling Systems   View/Download  |View/Download   CCR  
UFGS 23 76 00.00 10 Evaporative Cooling Systems  
UFGS 23 76 00.00 20 Evaporative Cooling System  
UFGS 23 80 20.00 10 Gas-Fired Heating Equipment   View/Download  |View/Download   CCR  
UFGS 23 81 00 Decentralized Unitary HVAC Equipment   View/Download  |View/Download   CCR