Company: LGN
Filing Date: 2025-12-09
Form Type: S-1
Source: 0001193125-25-312729
Chunk: 100

Company: Legence Corp.
Filing Date: 2025-12-09
Form: S-1
Chunk 100
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 Engineering & Consulting segment designs HVAC and other MEP systems for buildings, develops strategies to help reduce energy usage and make buildings more sustainable and provides program and project management services for clients’ installation and retrofit projects. Our Engineering & Consulting segment has two principal service offerings:

| • |     | Engineering & Design. We provide planning, design and engineering services for                                                                                                                                                                    
 HVAC, process piping and other MEP systems in both new and existing buildings. We also develop strategies for building owners and operators to help reduce their utility consumption and make their operations more sustainable and resilient. We 
 generated approximately 58% of our 2024 Engineering & Consulting segment revenues from selling Engineering & Design services.                                                                                                                     |

63

| • |     | Program & Project Management. We provide comprehensive program and project                                                                                                                                                                             
 management services, including facility condition and operational assessments, space utilization and capacity analyses, funding source identification and construction management. For certain clients, we provide design-build services through ESPCs 
 for building retrofits. Under ESPC contracts, financing sources provide the funds required to pay us for the upgrades and receive a portion of the client’s energy savings to recoup their investment and generate a return. We generated              
 approximately 42% of our 2024 Engineering & Consulting segment revenues from selling Program & Project Management services.                                                                                                                            |

Installation & Maintenance Our Installation & Maintenance segment fabricates and installs HVAC systems, process piping and other MEP systems in new and existing industrial, commercial and institutional buildings and provides ongoing preventative and corrective maintenance services for those systems. Our Installation & Maintenance segment has two principal service offerings:

| • |     | Installation & Fabrication. We provide HVAC, electrical, plumbing, process and                                                                                                                                                                 
 control system installations, refurbishments and renovations in technically demanding new and existing buildings. We perform both “design-build” and “plan and specification” (“P&S”) projects. Under                                          
 design-build projects, we provide the design for the project and install it. Under P&S projects, our client is responsible for designing the project and we install it to their specifications. For certain jobs, we also fabricate customized 
 components that are not readily available for purchase from other third- party vendors or provide modular construction services based on a client’s specifications. We generated approximately 79% of our 2024 Installation & Maintenance      
 segment revenues from Installation & Fabrication services.                                                                                                                                                                                     |

| • |     | Maintenance & Service. We provide preventative maintenance, emergency repair and break-fix services over the life of a building’s mechanical systems. Our services include regular