mechanical construction

Alpha Power Group, LLC is a Service-Disabled Veteran and Minority Owned Business focused on building America's energy infrastructure. It provides construction and professional services with industry subject matter experts deployable across the United States, operating under best-practice safety and quality standards. Its executive leadership team has over 100 years of combined EPC management experience across distribution, transmission, substation, commercial and industrial, electrification, generation, and oil and gas industries.

battery energy storage systemselectrical constructionengineeringEPC (Engineer-Procure-Construct) deliveryEV charging infrastructureHVACMEP constructionoverhead and underground distribution constructionoverhead and underground transmission constructionproject managementsolar balance of plant constructionsubstation constructionunion (IBEW) and non-union workforce solutions

AmerInd, Inc. is an Arkansas-based SBA 8(a) Certified Small Business, Indian Small Business Economic Enterprise (ISBEE), and Indian Economic Enterprise (IEE) certified General Contractor, Electrical Supplier, and management, consulting, administrative, and IT support services firm. Founded in 1957 as an electrical supply house, it provides turnkey electrical, mechanical, and design-build construction services to commercial, institutional, and governmental clients, including the US Army Corps of Engineers, FDA, and DoD.

administrative supportcloud computing and engineeringCybersecurity and information assuranceDesign-Build Constructionelectrical contractingEnergy as a Service (EaaS)IT infrastructure managementlighting retrofitsnetwork administration and supportProgram Managementstrategic analysissystems engineering and integrationtraining and instructor support

Applied Mechanical Systems, Inc. (AMS) is a regional mechanical contractor incorporated in Ohio on February 11, 1974, specializing in the design, installation, and service of heating, ventilation, air conditioning, and plumbing systems for commercial, industrial, and institutional clients. AMS operates offices in Dayton, Cincinnati, and Columbus, Ohio, and performs design/build, design/assist, plan/spec, service, preventative maintenance, and controls work.

CADcontrolsDesign-BuildHVAC installation and serviceMEP engineeringplumbing and pipefittingpreventative maintenancesheet metal fabrication

Autumn Construction Services, Inc. is a Chicagoland WBE/DBE mechanical contractor based in Lombard, IL, providing mechanical construction, HVAC and plumbing systems service, general trades and job order contracting, and professional services for commercial, institutional, municipal, and industrial facilities. The company states it has evolved over three decades since 1995 from a mechanical construction consultancy into a full-service provider.

backflow testingcarpentryConstruction ManagementHVAC service and repairJob Order Contractingmechanical engineering and designpaintingplumbing systems installation and repairProgram Management

Barriere Construction is a Louisiana-based civil construction company that has provided safe and efficient civil construction services for public, private, and industrial clients for over 70 years. It offers turn-key solutions, structural work, and asphalt and concrete paving, and describes itself as the largest producer of hot mix asphalt in Louisiana and a premier road and infrastructure builder across the Gulf South.

asphalt and concrete pavingasphalt plant operationscivil constructionConstruction Managementdesign and buildsite preparationstructural construction

Beitzel Corporation is a turnkey industrial contractor headquartered in Grantsville, Maryland, founded in 1974 to service coal mines and industrial facilities in western Maryland. It is a diversified, multi-faceted contractor serving industries including aggregate, commercial, manufacturing plants, mining, municipalities, oil & natural gas, utility scale solar, and wind. The company is 100% employee-owned alongside sister company Pillar Innovations.

aerial survey and mappingcivil constructioncrane serviceselectricalelectrical constructionexcavationfabrication and machininghaulingHVAC&Rindustrial constructionriggingsolar construction and O&Mwind services

BLDM is a specialty contractor offering integrated construction services in mechanical, electrical, water, and telecommunications areas. Since 1962 it has contributed to the development of Puerto Rico and the Caribbean's infrastructure with projects ranging from housing, hotels, transportation, and manufacturing. It has more than 2,500 professional team members and operates mechanical, electrical, hydraulic, and telecommunications services under one roof.

Building Information Modeling (BIM)CCTV installationdirectional drillingelectrical systems constructionfiber optic splicingHVAC maintenancemetal and steel prefabricationorbital process pipe weldingpipe fabrication and installationplumbingstructured cablingsubstation installationtrenchingwelding and metal fabrication

ENFRA develops, delivers, and sustains energy infrastructure for mission-critical organizations, with capabilities spanning engineering, construction, operations and maintenance, fabrication and modular construction, energy performance management, and Energy-as-a-Service. It reports more than 3,000 employees across 28 locations and over 100 years of delivering energy infrastructure solutions for healthcare, higher education, hospitality, industrial, and other mission-critical environments. The company rebranded as ENFRA in May 2025.

building automation and controlscommissioningDesign-Buildelectrical constructionelectrical engineeringenergy auditsenergy modelingenergy system designfabricationfacility benchmarkingmechanical engineeringmodular constructionmonitoring-based commissioningperformance analyticsplumbing designpreventive maintenancestructural engineering

Biszko Companies is a family owned business established in 1975 and a recognized leader in multi-disciplinary construction services. With more than 45 years of experience, it executes construction projects across heavy civil, utility, marine, water treatment facilities, pump stations, and residential and commercial development, including construction management and design build vertical projects.

Construction ManagementDesign-Buildheavy-civil constructionmarine constructionpump stationsroad constructionsite constructionutility installationsutility rehabilitationvertical constructionwater treatment facilities

Blue Construction Services (BCS) is an economically disadvantaged, woman owned, SBA 8(a) certified small business contracting firm focused on supporting the Federal Government in facility construction, maintenance, fire protection and staffing. BCS provides turn-key solutions including design-build, bid-build, construction management, renovation, disaster response, and maintenance services.

Bid-BuildConstruction ManagementDesign-Builddisaster responseelectrical constructionfire alarm inspectionfire alarm installationfire protection constructionpreventive maintenancerenovationsprinkler systemsStaffing

Bowen is a self-performing general contractor with operation centers across the country, delivering EPC and self-perform construction services including site, civil, structural, boilermaker and mechanical construction. With a history in Water, Wastewater, Energy and Industrial markets, Bowen is a nationwide Industrial Water, CSO, ELG, and CCR construction expert and a leader in PFAS, PFOS and PFOA constituent removal. Bowen has constructed over 1,000 treatment facilities and serves private and municipal Water/Wastewater clients and Energy/Industrial clie

biological treatmentboilermaker constructioncivil constructionEPC constructionevaporator experiencephys-chem treatmentproject controlsself-perform constructionsite constructionSQP lean construction processstructural construction

Caliber Construction Services Bringing commercial construction expertise to the state and federal government marketplace. Contact Us Why Choose Us? Caliber lends its experience and understanding of construction cost and constructability issues to ensure the greatest value to federal and state agencies. At Caliber we build relationships as well as buildings. Expertise With over 50 years of experience in construction services and contract management in everything from natural gas plants to federal test ranges to medical complexes to general construction, Caliber Construction Services can meet your construction requirements. Strength Caliber Construction’s strength comes from a depth and breadth of project experiences. The company stands above its competitors in NAICS certification, construction licenses, and technical capabilities. The owners have served the nation and state of New Mexico.

Building RenovationsConstruction ManagementDesign-BuildLEED practicesnew constructionplant and building maintenancepre-engineered building installation

Capps Mechanical LLC is a mechanical contractor providing mechanical construction and HVAC services to general contractors, property managers, associations, government agencies, private sector clients, and residential homeowners throughout Washington, D.C., Maryland, and Virginia. The company emphasizes quality workmanship, professionalism, safety, and continuous improvement, and its technicians complete a 5-year apprenticeship program through Steamfitters Local Union 602.

Construction Managementemergency HVAC repairHVAC design/buildHVAC installationHVAC maintenanceHVAC repairretrofit

Carwile Mechanical Contractors is a full-service mechanical contractor serving Middle Tennessee and the Upper Cumberland. Founded by Ezra Carwile in 1961, the company designs, fabricates, and installs mechanical systems for commercial, industrial, and residential clients, handling every stage from initial design to final installation.

controlsfabricationHVAC installationindustrial constructionplumbingPreconstructionprefabscanningservice and repairvirtual design and construction

Cenergy, LLC is a full-service general contractor providing engineering, manufacturing, and construction services to the natural gas industry. Located in West Virginia in the Appalachian Basin, its crews and equipment work for customers across the United States, serving major natural gas transmission, production, distribution, and gas storage companies.

civil constructionconstructionelectrical constructionengineeringmaintenancemanufacturingturnkeywelding

Cerris Systems is a national commercial and mechanical contractor specializing in MEP (mechanical, electrical, plumbing) work. The company builds and services complex projects of any size, partnering with clients from design and preconstruction through construction to building maintenance and systems service. It serves industries including power and energy, hospitality and entertainment, federal government and public works, office building and retail, healthcare, industrial, education, pharmaceutical, and mission critical.

BIM modelingbuilding automation and systems integrationconceptual budgetingconstructiondesign assistanceelectrical constructionelectrical servicemaintenance and upgradesmechanical servicePreconstructionprefabrication

CJ Industries is a general, mechanical and millwright construction company certified as Women Owned and Minority Owned in Missouri and Kansas. Founded in 2013 by Mindy Rocha after over 20 years in the construction industry, the company values health and safety above all else.

commercial plumbingconcreteconfined spaceconveyor installation/repairdemolitionemergency serviceequipment moving, setting and alignmentexcavationfabricationGeneral contractingHVACmillwright constructiononsite plant maintenancepipefittingprocess pipingrigging

Cleveland Electric is a specialty contractor in the Atlanta market, serving the Southeast for almost 100 years. Founded in 1925 as an electric motor repair company, it has grown into a specialty contracting firm focused on commercial, healthcare and industrial projects, providing electrical, mechanical, technology services and preconstruction solutions.

3D modelingbreaker testingdesign-assistDesign-Buildelectrical constructionfield service and testinginfrared scanninginstrumentation and equipment installationpre-construction servicesprefabricationprocess pipingtechnology systems integrationvirtual construction modeling

Comfort Systems USA Shoffner is a mechanical, electrical and plumbing (MEP) contractor headquartered in Knoxville, Tennessee, formed in 2016 when Comfort Systems USA Inc. and ShoffnerKalthoff MES, Inc. joined forces. It provides new and post-construction services including HVAC, plumbing, electrical, refrigeration, and DDC controls, and holds contractor licenses in Tennessee, Virginia, North Carolina, South Carolina, Alabama, Kentucky, and Georgia.

CAD/BIMDDC controlselectrical constructionfabricationHVACindustrial constructionmillwrightplumbingrefrigerationsheet metal fabricationwelding

Corval Group is a privately owned, single-source solution partner founded in 1921 (originally Axel Newman Plumbing, later New Mech Companies, renamed Corval Group in 2009). It delivers engineering, fabrication, construction, service, and maintenance expertise to the energy, food and beverage, public and institutional, industrial, and commercial sectors, and has worked on well over 150,000 projects.

constructionConstruction Managementdesign/buildengineeringEPCfabricationGeneral contractingPreconstructionproject developmentrefrigeration systemsservice and maintenance

Cullum Mechanical is a full-service mechanical construction and maintenance company founded in 1972 by Furman Cullum in Charleston, South Carolina. It specializes in HVAC, plumbing, medical gas piping, and process piping projects for commercial and industrial clients across South Carolina, North Carolina, and Georgia. The company formed Cullum Mechanical, LLC in 2023 and operates offices in North Charleston, Columbia, and Greenville, SC.

HVAC installationHVAC preventive maintenanceHVAC repairHVAC retrofittingmedical gas pipingpipe prefabricationplumbingpre-constructionprocess pipingproject managementsheet metal prefabricationtrenching

Delta Constructors is a full-service construction and fabrication group serving industrial clients of all sizes in petroleum, gas processing and energy projects. Established in 2009 serving Alaska's North Slope, it specializes in brownfield and greenfield construction and maintenance services for industrial and process facilities, using lean manufacturing practices and skilled craftsmen.

coatingscommissioningelectrical constructionequipment installationhydrostatic and pneumatic pressure testingpanel rack fabricationpipe fabricationPLC programmingscaffold erectionwelding

Denali CS is a woman-owned and managed mechanical construction and service enterprise serving the DFW area and North Texas for over a decade. It provides mechanical solutions for commercial, government, and industrial projects ranging from preventive maintenance, renovation, remodel, and retrofit to new construction. It is a WBE, SBE, and HUB certified contractor with about 100 employees.

electricalEV charger installationHVACnew constructionpipingplumbingpreventive maintenanceremodelrenovationretrofitsheet metalThermal Insulation

Reliable Comfort Economic Operation Reliable Comfort Economic Operation Reliable Comfort Economic Operation Reliable Comfort Economic Operation Reliable Comfort Economic Operation Reliable Comfort Economic Operation OUR MISSION Since our inception in 1918, we have established a reputation for excellence, quality, and outstanding customer service. Our mission is to satisfy our clients' Heating, Ventilation, and Air Condition objectives by meeting both their budget and schedule, solving any problems, and maintaining the highest quality of workmanship from start to finish. The Philadelphia Inquirer Building Renovation The historic Philadelphia Inquirer Building, which served as the Newspapers’ Administrative, printing and distribution headquarters for 83 years, lay idle until purchased by a local developer. Devine Brothers Inc. and AEI Engineers became part of the design/build team of the.

automated temperature controlsbackflow testing and certificationboiler and heat exchanger maintenancechiller and cooling tower maintenancedata center CRAC maintenanceDesign-Buildenergy managementHVAC installation and maintenanceplumbingsteam trap maintenance