Apprenticeship Sponsor — page 7 of 20
5,826 businesses with an active “Apprenticeship Sponsor” credential — administered by the Department of Labor. State file of October 1, 2026.
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| Place | Business | Record | Credentials | Latest expiration |
|---|---|---|---|---|
| West Springfield, MA | EASTERN ELECTRONICS & SECURITY INC. | 16CF68F3BE | Apprenticeship Sponsor | Jun 30, 2009 |
| Norwich, CT | Eastern Energy Services LLC | B7F196805A | Apprenticeship Sponsor | Jun 30, 2017 |
| Hamden, CT | EASTERN FUEL CORPORATION | CC855EF556 | Home Heating Fuel Dealer + 2 more | Sep 30, 2027 |
| Stamford, CT | EASTERN LAND MANAGEMENT, INC | 0C9677050E | Pesticide Application Business Registration + 1 more | Aug 31, 2027 |
| Oxford, CT | Eastern Mechanical Services, Inc. | 4DEB1268F1 | Apprenticeship Sponsor | Jun 30, 2027 |
| Holliston, MA | Eastern Millwright Regional Council ATF | 2020CD3CF6 | Apprenticeship Sponsor | Jun 30, 2027 |
| Colchester, CT | Eastern Refrigeration & HVAC | C82C994893 | Apprenticeship Sponsor | Jun 30, 2026 |
| Norwich, CT | Eastern USA Fuel Inc. | 278D66FD08 | Apprenticeship Sponsor | Jun 30, 2005 |
| Oxford, CT | Eastern Water Solutions, Inc. | 43322B3850 | Apprenticeship Sponsor | Jun 30, 2027 |
| Easthampton, MA | Easthampton Electrical Services | B5C8381B48 | Apprenticeship Sponsor | Jun 30, 2018 |
| Harwinton, CT | EASTSIDE ELECTRIC INC. | D71B200E9B | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Fairfield, CT | EB Electrical Services, LLC | D09F42E15C | Apprenticeship Sponsor | Jun 30, 2027 |
| Stamford, CT | ECEC at Temple Sinai | 939D901A39 | Apprenticeship Sponsor | Jun 30, 2027 |
| Middlefield, CT | Echo Electric, LLC | BFC42412F7 | Apprenticeship Sponsor | Jun 30, 2006 |
| Madison, CT | ECM Enterprises LLC | 72900075BD | Apprenticeship Sponsor | Jun 30, 2016 |
| Goshen, CT | Eco Home Comfort Systems, LLC | 97565FE6D4 | Apprenticeship Sponsor | Jun 30, 2026 |
| Ridgefield, CT | Eco-Systems, Inc. | 60822E6944 | Apprenticeship Sponsor | Jun 30, 2012 |
| Orange, CT | Econn Plumbing & Heating, Inc. | BD6C7295D0 | Apprenticeship Sponsor | Jun 30, 2004 |
| Westport, CT | Economy Energy, LLC | D92EEE76D7 | Apprenticeship Sponsor | Jun 30, 2025 |
| Southington, CT | ECONOMY SPRING, LLC DBA PARAGON MEDICAL | 66B78A1135 | Apprenticeship Sponsor | Jun 30, 2026 |
| Fairfield, CT | ECP Electric, LLC | 1FF6E8174E | Apprenticeship Sponsor | Jun 30, 2027 |
| Bethel, CT | ECUA-Electric, LLC | ABF72F02C7 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Waterford, CT | Ed Bartelli, Inc. | 826147C1B8 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Pine Meadow, CT | Ed Blesso Plumbing & Heating Inc. | 361AE575F2 | Apprenticeship Sponsor | Jun 30, 2009 |
| Columbia, CT | Ed Brennan & Sons Plumbing & Heating LLC | 56F17768B1 | Apprenticeship Sponsor | Jun 30, 2013 |
| South Windsor, CT | Ed Steben Glass Company, Inc. | 606A87DF74 | Apprenticeship Sponsor | Jun 30, 2008 |
| West Hartford, CT | Ed The Phone Guy, LLC | 1441482AA8 | Apprenticeship Sponsor | Jun 30, 2019 |
| Canterbury, CT | ED'S GARAGE INC | E7161583B2 | Home Heating Fuel Dealer + 2 more | Sep 30, 2027 |
| Waterford, CT | Ed's Plumbing, LLC | 680ED63E19 | Apprenticeship Sponsor | Jun 30, 2027 |
| Glastonbury, CT | EDAC ND, Inc. | B2CF5B18C2 | Apprenticeship Sponsor | Jun 30, 2021 |
| Wolcott, CT | EDCS, LLC | 3214518ABD | Apprenticeship Sponsor | Jun 30, 2026 |
| Monroe, CT | EDGERTON, INC. | 2252825A98 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Farmington, CT | Edmunds Gages Edmunds Manufacturing Co.,Inc. | C921F818B3 | Apprenticeship Sponsor | Jun 30, 2008 |
| East Berlin, CT | EDRO Corporation | F88926D8AD | Apprenticeship Sponsor | — |
| Wolcott, CT | Edson Manufacturing, Inc. | 37E868005D | Apprenticeship Sponsor | Jun 30, 2022 |
| Shelton, CT | EDT Services, LLC | 0420F04E8E | Apprenticeship Sponsor | Jun 30, 2012 |
| Dearborn, MI | Educational Data Systems, Inc. (EDSI) | 84C0CD9AE0 | Apprenticeship Sponsor | Jun 30, 2021 |
| Meriden, CT | Edward S. Mull & Co. | C6DDE8F868 | Apprenticeship Sponsor | Jun 30, 2008 |
| Thomaston, CT | Edward Segal Inc. | 5AC6360106 | Apprenticeship Sponsor | Jun 30, 2027 |
| Shelton, CT | Edward Vizzo Electric LLC | 309020C86A | Apprenticeship Sponsor | Jun 30, 2011 |
| Chepachet, RI | EES Enterprises | 40E2BE790F | Apprenticeship Sponsor | Jun 30, 2009 |
| Norwalk, CT | Effective Plumbing LLC | 70C021041E | Apprenticeship Sponsor | Jun 30, 2027 |
| Stamford, CT | Efficient Heating & Cooling, Inc. | 50637AE88D | Apprenticeship Sponsor | Jun 30, 2026 |
| Newtown, CT | Efficient Lighting Consultants dba ELC Energy Solutions, Inc. | 9D9BFC7800 | Apprenticeship Sponsor | Jun 30, 2025 |
| Brookfield, CT | Efficient Lighting Maintenance Company DBA - T.A. Phillips Electrical Contractors | 9F28A5C13E | Apprenticeship Sponsor | Jun 30, 2027 |
| South Windsor, CT | EFR Electric, LLC | 5CDF189F22 | Apprenticeship Sponsor | Jun 30, 2011 |
| Newington, CT | EFS Electrical Services | 0FAB1CBFF2 | Apprenticeship Sponsor | Jun 30, 2024 |
| Ansonia, CT | Ehman Mechanical Services LLC | 1808A4DF4C | Apprenticeship Sponsor | Jun 30, 2005 |
| West Simsbury, CT | Eisenberg Electric Co. LLC | F665DCF967 | Apprenticeship Sponsor | Jun 30, 2010 |
| Harwinton, CT | EJR Plumbing & Heating | D306BC92A5 | Apprenticeship Sponsor | Jun 30, 2021 |
| New Britain, CT | Ekris Cable Co., Inc. | 88DB82B7DE | Apprenticeship Sponsor | Jun 30, 2012 |
| Northford, CT | Electranet INC | 088823B2D1 | Apprenticeship Sponsor | Jun 30, 2016 |
| Stratford, CT | Electri-Tech, LLC | C0B1E601CF | Apprenticeship Sponsor | Jun 30, 2024 |
| Groton, CT | ELECTRIC BOAT CORPORATION | 2CFB355698 | Certified EMS Organization + 2 more | Sep 30, 2027 |
| Bloomfield, CT | Electric Light & Fire LLC | A80F887567 | Apprenticeship Sponsor | Jun 30, 2010 |
| Northford, CT | Electric Mathers, LLC | 65EC233B87 | Apprenticeship Sponsor | — |
| Winsted, CT | Electric Motion Company, Inc. | BE5D35BE12 | Apprenticeship Sponsor | Jun 30, 2016 |
| Hampton, CT | Electric Solutions Contracting, LLC | BDC917DE35 | Apprenticeship Sponsor | Jun 30, 2018 |
| Rockfall, CT | Electric Works, Inc. | 11CF754A65 | Apprenticeship Sponsor | Jun 30, 2027 |
| Quaker Hill, CT | Electrical & Security Technologies, LLC | A552C2C507 | Apprenticeship Sponsor | Jun 30, 2004 |
| Riverside, CT | Electrical Associates of Greenwich, LLC | 8DE6EFF0D9 | Apprenticeship Sponsor | Jun 30, 2018 |
| Unionville, CT | Electrical Concepts, Inc. | F462EF065E | Apprenticeship Sponsor | Jun 30, 2005 |
| Newington, CT | ELECTRICAL CONNECTION, INC. | 15690EF109 | Apprenticeship Sponsor | Jun 30, 2027 |
| East Windsor, CT | Electrical Construction Corporation | AD214F5955 | Apprenticeship Sponsor | Jun 30, 2013 |
| Hartford, CT | ELECTRICAL CONTRACTORS INC | 7DA1269C13 | Major Contractor + 1 more | Jun 30, 2027 |
| Southington, CT | Electrical Energy Systems Corporation | 60DE362191 | Apprenticeship Sponsor | Jun 30, 2027 |
| Southington, CT | Electrical Energy Systems Voice & Data LLC | B30B16C8B7 | Apprenticeship Sponsor | Jun 30, 2012 |
| Wallingford, CT | Electrical Facilities Incorporated | D7826C5CF4 | Apprenticeship Sponsor | Jun 30, 2027 |
| Southington, CT | Electrical Images, LLC | EE80A75680 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Worcester, MA | Electrical Maintenance & Construction | 0AEAA52511 | Apprenticeship Sponsor | Jun 30, 2012 |
| Orange, CT | Electrical Partners | D78DB3178F | Apprenticeship Sponsor | Jun 30, 2005 |
| Naugatuck, CT | Electrical Power Pro CT, LLC | B9A207B0D7 | Apprenticeship Sponsor | Jun 30, 2025 |
| Naugatuck, CT | Electrical Power Pros | 6C2FB58727 | Apprenticeship Sponsor | Jun 30, 2026 |
| Meriden, CT | Electrical Services | 3B19CC1734 | Apprenticeship Sponsor | Jun 30, 2006 |
| Stamford, CT | Electrical Services 03 | 17EF36C02B | Apprenticeship Sponsor | Jun 30, 2012 |
| New Haven, CT | Electrical Services Group, LLC | CFC09D794D | Apprenticeship Sponsor | Jun 30, 2027 |
| Monroe, CT | Electrical Services of Fairfield County LLC | CBFE982D66 | Apprenticeship Sponsor | Jun 30, 2024 |
| Bethel, CT | Electrical Solutions, LLC | 963A81FCDF | Apprenticeship Sponsor | Jun 30, 2009 |
| Madison, CT | Electrical Systems Integration, LLC | 3664CC4D80 | Apprenticeship Sponsor | Jun 30, 2025 |
| South Windsor, CT | Electrical Systems Technologies, LLC | 683D341837 | Apprenticeship Sponsor | Jun 30, 2026 |
| Enfield, CT | Electrical Systems, Inc. | CAD7A58656 | Apprenticeship Sponsor | Jun 30, 2027 |
| Shelton, CT | Electrical Technician CT | E9A564273E | Apprenticeship Sponsor | Jun 30, 2027 |
| Norwich, CT | Electrical Unlimited, LLC | 04435E90B8 | Apprenticeship Sponsor | Jun 30, 2014 |
| Putnam, CT | Electrical Wholesalers Inc. US Electrical Services, Inc. | 2D9CC3829A | Apprenticeship Sponsor | — |
| Fairfield, CT | Electrical Works Inc. | D6F64DBD9B | Apprenticeship Sponsor | Jun 30, 2027 |
| Berlin, CT | ElectriSource Corp. | FA53F99398 | Apprenticeship Sponsor | Jun 30, 2027 |
| Norwalk, CT | Electro-Mech | C7649A36DC | Apprenticeship Sponsor | Jun 30, 2010 |
| Waterbury, CT | Electro-Service, LLC | A332A1356C | Apprenticeship Sponsor | Jun 30, 2026 |
| Bridgeport, CT | Electronic Security & Controls Systems, Inc. | DD330F9D56 | Apprenticeship Sponsor | Jun 30, 2027 |
| Brooklyn, CT | Electrons Unlimited, LLC | A16F5A6877 | Apprenticeship Sponsor | Jun 30, 2027 |
| Plainville, CT | Element 119, LLC | F31A595787 | Apprenticeship Sponsor | Jun 30, 2027 |
| Orange, CT | Elevate style lounge | 3279F65B41 | Apprenticeship Sponsor | Jun 30, 2027 |
| East Hartford, CT | ELEVATOR CONSTRUCTORS LOCAL 91 JAC | 564795E1B9 | Apprenticeship Sponsor | Jun 30, 2027 |
| Danbury, CT | ELIAN'S BARBERSHOP | 054DFC9B3D | Apprenticeship Sponsor | Jun 30, 2027 |
| Lyme, CT | ELICENSE ORGTEST | 19E4E891DE | Apprenticeship Sponsor | Jun 30, 2025 |
| Waterbury, CT | Elite Barbershop Studio | A9E8D1FCCC | Apprenticeship Sponsor | Jun 30, 2027 |
| Harwinton, CT | Elite Comfort LLC | 30A7F80CE4 | Apprenticeship Sponsor | Jun 30, 2027 |
| East Windsor, CT | Elite Electrical Contracting, LLC | 40977B6D0C | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Trumbull, CT | ELITE ELECTRICAL CONTRACTORS LLC | 3CA3F1696B | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| Pawling, NY | Elite Electrical Enterprises, Inc. | 421075D050 | Apprenticeship Sponsor | Jun 30, 2012 |
| Stamford, CT | Elite Electrical Installation, LLC | 8D231C7311 | Apprenticeship Sponsor | Jun 30, 2009 |
| Cheshire, CT | Elite Electrical LLC | 56FAE443DE | Apprenticeship Sponsor | Jun 30, 2026 |
| Manchester, CT | Elite Electrical Services | 37BD26875E | Apprenticeship Sponsor | Jun 30, 2015 |
| Rocky Hill, CT | Elite Energy Consulting, Inc. | CE26512C32 | Apprenticeship Sponsor | Jun 30, 2024 |
| Naugatuck, CT | Elite Fire Protection Services, Inc. | 5C08FEC021 | Apprenticeship Sponsor | Jun 30, 2027 |
| Plainville, CT | Elite Fire Protection, LLC | 5E19ADF1E2 | Apprenticeship Sponsor | Jun 30, 2027 |
| North Haven, CT | Elite Heating & Air Conditioning, LLC | 65FEC0E556 | Apprenticeship Sponsor | Jun 30, 2014 |
| Derby, CT | Elite Heating & Cooling, LLC | 8E5A1F3C8F | Apprenticeship Sponsor | Jun 30, 2022 |
| Bristol, CT | Elite Mechanical Contractors, LLC | 6D6531A286 | Apprenticeship Sponsor | Jun 30, 2026 |
| Franklin, CT | Elite Plumbing Services, LLC | FCBCA8AE45 | Apprenticeship Sponsor | Jun 30, 2026 |
| Berlin, CT | Elite Plumbing, Heating & Fire Protection | 963D164C80 | Apprenticeship Sponsor | Jun 30, 2027 |
| Waterbury, CT | Elite Power Systems, LLC | D4AD905102 | Apprenticeship Sponsor | Jun 30, 2022 |
| Bristol, CT | Elite Systems, LLC | 015087551C | Apprenticeship Sponsor | Jun 30, 2026 |
| East Hartford, CT | Elites Plumbing LLC | 32D76CF659 | Apprenticeship Sponsor | Jun 30, 2027 |
| Plainville, CT | Elk Sheetmetal, LLC | 2CFC862FA6 | Apprenticeship Sponsor | Jun 30, 2010 |
| Ellington, CT | Ellington Electrical Contractor, LLC | F03FD91507 | Apprenticeship Sponsor | Jun 30, 2017 |
| Ellington, CT | Ellington Energy Inc. DBA Violette Mechanical | 5D30F63A8C | Apprenticeship Sponsor | Jun 30, 2027 |
| Middletown, CT | ELM ELECTRIC, INC.-CT | 86B1FB7117 | Apprenticeship Sponsor | Jun 30, 2027 |
| Westfield, MA | ELM ELECTRICAL, INC.-MA | E348E827BC | Apprenticeship Sponsor | Jun 30, 2027 |
| Hartford, CT | Elman Fuel Co., The | B09E65F28C | Apprenticeship Sponsor | Jun 30, 2006 |
| Plainville, CT | Elyon Inc. | 23D57D7B14 | Apprenticeship Sponsor | Jun 30, 2012 |
| Danbury, CT | EMA Electric, LLC | D8A4698401 | Apprenticeship Sponsor | — |
| Shelton, CT | Emcor Facilities Services, Inc. | 1260F8BCB8 | Apprenticeship Sponsor | Jun 30, 2015 |
| Stamford, CT | Emilio Caruso Plumbing & Heating Inc. | 433FEE5A4F | Apprenticeship Sponsor | Jun 30, 2026 |
| Mystic, CT | EMOND PLUMBING & HEATING, INC. | 7C32354329 | Apprenticeship Sponsor | Jun 30, 2027 |
| Meriden, CT | Empire Barber Studio | 758DF04152 | Apprenticeship Sponsor | Jun 30, 2027 |
| Middletown, CT | Empire Electric, LLC | EF10327371 | Apprenticeship Sponsor | Jun 30, 2022 |
| North Haven, CT | EMPIRE PAVING INC | 00999C55C4 | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| East Syracuse, NY | Empire ST Merit Apprenticeship Alliance, Inc. | FD25EBE13D | Apprenticeship Sponsor | Jun 30, 2025 |
| Middletown, CT | Encore Holdings dba Encore Fire Protection | E1AAA76802 | Apprenticeship Sponsor | Jun 30, 2027 |
| New Milford, CT | Energize Us | 56101A12F0 | Apprenticeship Sponsor | Jun 30, 2023 |
| Guilford, CT | Energy Air | 251E196E6E | Apprenticeship Sponsor | Jun 30, 2026 |
| Collinsville, CT | Energy Connection, Inc. | EF98341B36 | Apprenticeship Sponsor | Jun 30, 2026 |
| Branford, CT | Energy Electric, Inc. | A75DD2E330 | Apprenticeship Sponsor | Jun 30, 2011 |
| Foxborough, MA | Energy Electrical Contractors | 842C9792E5 | Apprenticeship Sponsor | Jun 30, 2027 |
| Waterbury, CT | ENERGY MANAGEMENT PROFESSIONALS, LLC VALIANT ENERGY SOLUTIONS | ABE32C7FF8 | Pesticide Application Business Registration + 3 more | Aug 31, 2027 |
| Wethersfield, CT | Energy Mechanical | 2139E75C4A | Apprenticeship Sponsor | Jun 30, 2022 |
| Shelton, CT | Energy Solutions, LLC | 48673C1652 | Apprenticeship Sponsor | Jun 30, 2019 |
| Higganum, CT | Energy Tech, LLC | FC5EFA2EBB | Apprenticeship Sponsor | Jun 30, 2014 |
| Manchester, CT | ENERGY UNLIMITED LLC | 3C894D6AF9 | Apprenticeship Sponsor | Jun 30, 2027 |
| North Haven, CT | Energy USA Propane DBA - Nutmeg State Propane | 597276CD14 | Apprenticeship Sponsor | Jun 30, 2012 |
| Granby, CT | Energy Vectors, LLC | 23D4753EB9 | Apprenticeship Sponsor | Jun 30, 2015 |
| Enfield, CT | Enfield Lighting & Maintenance, Inc. | 3D6B423D38 | Apprenticeship Sponsor | Jun 30, 2010 |
| Branford, CT | Engineered Systems Integrators, LLC | 6D1011E0E3 | Apprenticeship Sponsor | Jun 30, 2026 |
| Huntington, CT | Engineered Systems Plumbing & Heating | 3024C75D76 | Apprenticeship Sponsor | Jun 30, 2005 |
| North Branford, CT | Engineering Specialities, Inc. | 056FA9568F | Apprenticeship Sponsor | Jun 30, 2027 |
| Manchester, CT | Enjet Aero Manchester | 415F4176DB | Apprenticeship Sponsor | Jun 30, 2026 |
| Stafford Springs, CT | Enlightened Electric, LLC | E6C6644999 | Apprenticeship Sponsor | Jun 30, 2023 |
| Simsbury, CT | Ensign Bickford Aerospace & Defense Company | 5FED99D76B | Apprenticeship Sponsor | Jun 30, 2025 |
| Newtown, CT | Enterprise Electrical Contractors, Inc. | 9534EEE9B4 | Apprenticeship Sponsor | Jun 30, 2027 |
| Meriden, CT | Enterprises Fire Protection | 0BE6D78B06 | Apprenticeship Sponsor | Jun 30, 2009 |
| Oxford, CT | Entire Home Incorporated | C757437AA4 | Apprenticeship Sponsor | Jun 30, 2027 |
| Stratford, CT | Environmental Control Inc. dba Encon Heating & Air Conditioning | 305CCBB314 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Southington, CT | ENVIRONMENTAL DESIGNS LLC | 3937175876 | Home Improvement Contractor + 1 more | Mar 31, 2027 |
| Milford, CT | Environmental Engineering, Inc. | 5C14BB1262 | Apprenticeship Sponsor | Jun 30, 2027 |
| Marlborough, MA | Environmental Fire Protection Inc. | CC9C4BBDA5 | Apprenticeship Sponsor | Jun 30, 2011 |
| Enfield, CT | Environmental Fire Protection of Conn., Inc. | A94F2B3683 | Apprenticeship Sponsor | Jun 30, 2007 |
| East Berlin, CT | Environmental Fire Protection, Inc. | 51192DFCEC | Apprenticeship Sponsor | Jun 30, 2011 |
| South Windsor, CT | ENVIRONMENTAL SERVICES INC | A701F42831 | Asbestos Contractor + 2 more | Jun 30, 2027 |
| West Hartford, CT | Environmental Systems Corp. | 1BA4BFA3FE | Apprenticeship Sponsor | Jun 30, 2027 |
| South Windsor, CT | EON Electrical, LLC | 05CAB7E2ED | Apprenticeship Sponsor | Jun 30, 2027 |
| Seymour, CT | EQUIPMENT UNLIMITED ENTERPRISES LLC | 069A15B47D | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| New London, CT | Eric Electric, LLC | AE106A0F6E | Apprenticeship Sponsor | Jun 30, 2009 |
| Canterbury, CT | Eric Sabo Plumbing, Heating and Cooling, LLC | D4542595FD | Apprenticeship Sponsor | Jun 30, 2027 |
| West Hartford, CT | Eriksson Electric | DFF74AEF63 | Apprenticeship Sponsor | Jun 30, 2012 |
| Hamden, CT | Ernest E. Ehle & Son, LLC | 6642853FED | Apprenticeship Sponsor | Jun 30, 2024 |
| Morris, CT | ESCAPE PLUMBING & HEATING, LLC | BD282FEEEE | Apprenticeship Sponsor | Jun 30, 2026 |
| New Milford, CT | ESI Electrical Services, LLC | 7780DC680F | Apprenticeship Sponsor | Jun 30, 2020 |
| Bristol, CT | ESPN, Inc. | 08DD97526D | Apprenticeship Sponsor | Jun 30, 2025 |
| East Haven, CT | Esposito Electric & Security | 842C14FCE8 | Apprenticeship Sponsor | Jun 30, 2025 |
| Stamford, CT | ESS LLC (Electrical Solutions Services) | 9753173DE9 | Apprenticeship Sponsor | Jun 30, 2024 |
| East Haven, CT | Essential Plumbing & Heating | CC215152AB | Apprenticeship Sponsor | Jun 30, 2007 |
| Preston, CT | ETS Electrical Construction | 4B7003C592 | Apprenticeship Sponsor | Jun 30, 2027 |
| Brookfield, CT | Eurolux Salon and Day Spa LLC | 51E3711520 | Apprenticeship Sponsor | Jun 30, 2027 |
| Danbury, CT | Everest HVAC LLC | D739ED8570 | Apprenticeship Sponsor | Jun 30, 2007 |
| Middletown, CT | Everett Electrical Contractors, LLC | 01FD767216 | Apprenticeship Sponsor | Jun 30, 2027 |
| Hamden, CT | Evergreen Heating and Cooling, LLC | D2E1825F4F | Apprenticeship Sponsor | Jun 30, 2027 |
| Waterbury, CT | Evergreen Solar Energy, LLC | 433F54F19A | Apprenticeship Sponsor | Jun 30, 2024 |
| Pawcatuck, CT | EVERING ELECTRIC, LLC | 5C4ACD1CC5 | Apprenticeship Sponsor | Jun 30, 2027 |
| Manchester, CT | EVERLAST ENERGY, LLC | 34C1A3BA21 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Hartford, CT | Everlasting Beauty LLC | 870A88BB06 | Apprenticeship Sponsor | Jun 30, 2026 |
| Winsted, CT | Everlasting Wells LLC | 7E3D9735E4 | Apprenticeship Sponsor | Jun 30, 2027 |
| Wallingford, CT | EVERON, LLC | 5721ECE3D4 | Apprenticeship Sponsor | Jun 30, 2027 |
| Berlin, CT | Eversource | 210CAE33C0 | Apprenticeship Sponsor | Jun 30, 2024 |
| Berlin, CT | Eversource Energy | 446F5329D4 | Apprenticeship Sponsor | Jun 30, 2020 |
| Hartford, CT | Everybody Loves Titus Plumbing Services, LLC | 08C490CD8A | Apprenticeship Sponsor | Jun 30, 2024 |
| Stamford, CT | Evolution Air, LLC | C973B06D67 | Apprenticeship Sponsor | Jun 30, 2027 |
| Windsor, CT | Evolution Electric Contractors LLC | 29A91B3CA1 | Apprenticeship Sponsor | Jun 30, 2008 |
| Deep River, CT | Evolution Electrical Contractors. LLC | BCA67CAC41 | Apprenticeship Sponsor | Jun 30, 2026 |
| Thomaston, CT | Excel Plumbing & Heating LLC | F5ECF4FBFB | Apprenticeship Sponsor | Jun 30, 2007 |
| Madison, CT | Excellawn Irrigation Systems | ED845F4694 | Apprenticeship Sponsor | Jun 30, 2014 |
| Milford, CT | Excello Tool Engineering & Mfg. Co., Inc. | A27F787DBC | Apprenticeship Sponsor | Jun 30, 2027 |
| East Hartford, CT | Exclusive Cuts | 4F72C6710F | Apprenticeship Sponsor | Jun 30, 2026 |
| Torrington, CT | Executive Glass, LLC | 44FA4FF71D | Apprenticeship Sponsor | Jun 30, 2017 |
| Hamden, CT | Executive Landscaping Inc. | DF9DFFC0CF | Apprenticeship Sponsor | Jun 30, 2009 |
| Plainville, CT | Exoban, LLC | 8C4BB95B57 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bloomfield, CT | Expert Comfort Solutions, LLC | E0268A3009 | Apprenticeship Sponsor | Jun 30, 2008 |
| Naugatuck, CT | EXPERT ELECTRIC INC. | DB34558602 | Apprenticeship Sponsor | Jun 30, 2026 |
| Shelton, CT | Express Electric, LLC | C489013163 | Apprenticeship Sponsor | Jun 30, 2009 |
| Watertown, CT | Eyelematic Manufacturing Co., Inc. | 5A1F44D6BE | Apprenticeship Sponsor | Jun 30, 2005 |
| Wolcott, CT | Eyelet Tech LLC | 29ED1C2A6A | Apprenticeship Sponsor | Jun 30, 2010 |
| Centerbrook, CT | F & F Industries Inc. | 6EDC39F572 | Apprenticeship Sponsor | Jun 30, 2008 |
| Hartford, CT | F & S Electric Services | 451FE891B8 | Apprenticeship Sponsor | Jun 30, 2027 |
| Waterbury, CT | F & S Oil Company | 3F487E855D | Apprenticeship Sponsor | Jun 30, 2008 |
| East Haven, CT | F PERRELLI & SONS FUEL INC | 76781826B5 | Motor Fuel Quality Registration + 2 more | Oct 31, 2027 |
| Norwalk, CT | F&G Construction | 92CB31B401 | Apprenticeship Sponsor | Jun 30, 2026 |
| Wallingford, CT | F&H PLUMBING AND HEATING LLC BLUEFROG PLUMBING + DRAIN OF CT | D1293480D8 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Columbia, CT | F. B. Manion, Inc. | AACB68DE0D | Apprenticeship Sponsor | — |
| Stamford, CT | F. Conte Electric Corp. | 22DD7C2185 | Apprenticeship Sponsor | Jun 30, 2027 |
| Wallingford, CT | F. D. R. Inc. dba Smitty's Service Company | 85CB70BC74 | Apprenticeship Sponsor | Jun 30, 2012 |
| Milldale, CT | F. J. HUBENY, INC. | D5E4E1BC63 | Apprenticeship Sponsor | Jun 30, 2027 |
| North Haven, CT | F.A.D. Mechanical, LLC | 4611042CD6 | Apprenticeship Sponsor | Jun 30, 2027 |
| Glastonbury, CT | F.A.K. Electric, LLC | 342CCE79FE | Apprenticeship Sponsor | Jun 30, 2005 |
| Stamford, CT | F.D. Electrical Contracting, LLC | B6D8EF93B3 | Apprenticeship Sponsor | Jun 30, 2025 |
| Cheshire, CT | F.F. Hitchcock Co., Inc. | 7F01609616 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Hamden, CT | F.H. Mott Fuel, LLC | 03706DE9DD | Apprenticeship Sponsor | Jun 30, 2017 |
| Northford, CT | F.J. CHANDLER AIR SYSTEMS | 0323E7C799 | Apprenticeship Sponsor | Jun 30, 2026 |
| Burlington, CT | F.J. Chard & Son Inc. | E3A4EF275B | Apprenticeship Sponsor | Jun 30, 2027 |
| Stratford, CT | F.S. Electric Co. Inc. | 6E75C7A2D6 | Apprenticeship Sponsor | Jun 30, 2020 |
| Warwick, RI | F.T.I.S.N.E. INC. (Rhode Island) | BE22CB7DD6 | Apprenticeship Sponsor | Jun 30, 2012 |
| Shelton, CT | Fabian Plumbing & Heating | 48A449BA99 | Apprenticeship Sponsor | Jun 30, 2026 |
| Berlin, CT | Facilities Compliance Fire Protection, LLC | 8CA3BE412A | Apprenticeship Sponsor | Jun 30, 2027 |
| New Haven, CT | Facility Logistics LLC | 453FA8427A | Apprenticeship Sponsor | Jun 30, 2007 |
| Stonington, CT | Facility Solutions Group | C34A7C1B0E | Apprenticeship Sponsor | Jun 30, 2027 |
| Willimantic, CT | Fade Masons Barber Shop, LLC | 9D4BF2C96E | Apprenticeship Sponsor | Jun 30, 2023 |
| Rocky Hill, CT | Fades Of Art | 02954DD218 | Apprenticeship Sponsor | Jun 30, 2027 |
| Norwalk, CT | Fahey Plumbing & Heating Inc. | EB02DE87BB | Apprenticeship Sponsor | Jun 30, 2012 |
| Broadbrook, CT | Fahrenheit Mechanical Services, Inc. | 188DD5B566 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Winsted, CT | Fairchild Auto-Mated Parts, Inc. | 7459961EDE | Apprenticeship Sponsor | Jun 30, 2021 |
| Stamford, CT | Fairconn Plumbing & Heating, LLC | E7500BD7F4 | Apprenticeship Sponsor | Jun 30, 2023 |
| Easton, CT | Fairfield County Alarm Service | C8F83042D0 | Apprenticeship Sponsor | Jun 30, 2023 |
| Stratford, CT | Fairfield County Communications, Inc. | 2C279D6892 | Apprenticeship Sponsor | Jun 30, 2018 |
| Huntington, CT | Fairfield County Plumbing Services | A4FDCB3A93 | Apprenticeship Sponsor | Jun 30, 2012 |
| Stratford, CT | Fairfield County Plumbing Services, LLC | 7159E73E09 | Apprenticeship Sponsor | Jun 30, 2026 |
| New Milford, CT | Family 1st Heating & Cooling | F178EC1AE5 | Apprenticeship Sponsor | Jun 30, 2011 |
| Farmington, CT | Farmington Garden Nursery Inc. | 6C49D2E58B | Apprenticeship Sponsor | Jun 30, 2008 |
| Farmington, CT | Farmington Plumbing & Heating | 32A53EEDC1 | Apprenticeship Sponsor | Jun 30, 2022 |
| Goshen, CT | Farmington Valley Home Services, LLC | 2E15C68679 | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| East Granby, CT | Farmington Valley Plumbing, LLC | 45977954CF | Apprenticeship Sponsor + 1 more | Jun 30, 2027 |
| Ansonia, CT | Farrel Corporation | F5FADAE1C6 | Apprenticeship Sponsor | Jun 30, 2027 |
| Waterbury, CT | FASCIA'S CHOCOLATES INC | 963B17DC71 | Food Manufacturing Establishment + 3 more | Jun 30, 2027 |
| Wilton, CT | Father & Son Plumbing | 294DF7A13A | Apprenticeship Sponsor | Jun 30, 2012 |
| New Milford, CT | Faulenbach & Son Plumbing | 6DB0B69E70 | Apprenticeship Sponsor | Jun 30, 2018 |
| Deep River, CT | Faulkingham Electrical Services, LLC | 42E0704091 | Apprenticeship Sponsor | Jun 30, 2026 |
| Windsor, CT | FBN Security Company LLC | A5554A319A | Apprenticeship Sponsor | Jun 30, 2009 |
| Fairfield, CT | FCR ELECTRIC, LLC | AFE43B4A6D | Apprenticeship Sponsor | Jun 30, 2027 |
| Stratford, CT | FEDERAL ELECTRIC CONSTRUCTION CO., INC. | 47BD0D1D0D | Apprenticeship Sponsor | Jun 30, 2027 |
| Meriden, CT | Feel Fresh Hair Studio LLC | 87CFF3B3D9 | Apprenticeship Sponsor | Jun 30, 2026 |
| Moodus, CT | Felciano Plumbing & Heating LLC | D23E605256 | Apprenticeship Sponsor | Jun 30, 2005 |
| Wallingford, CT | Fenair Heating & Cooling, LLC | 64280438D8 | Apprenticeship Sponsor | Jun 30, 2004 |
| South Kent, CT | Fenyes Plumbing & Heating | B987528C4E | Apprenticeship Sponsor | Jun 30, 2020 |
| Plainville, CT | Ferguson Electric Company, Inc. | 4EC6726AB7 | Apprenticeship Sponsor + 1 more | Jun 30, 2028 |
| Plainville, CT | FERGUSON MECHANICAL CO., INC. | C01A6C8C49 | Apprenticeship Sponsor | Jun 30, 2027 |
| Oxford, CT | Ferrer's Electric, LLC | 10B40DF85B | Apprenticeship Sponsor | — |
| Monroe, CT | Ferrigno Plumbing | 00AAAD040F | Apprenticeship Sponsor | Jun 30, 2004 |
| Hamden, CT | Ferrucci Plumbing & Heating, LLC | 49AB1CC4B6 | Apprenticeship Sponsor | Jun 30, 2009 |
| South Windsor, CT | FIBER OPTIC PLUS LLC | 14F55CE19A | Apprenticeship Sponsor | Jun 30, 2026 |
| East Granby, CT | Fijal Plumbing & Heating LLC | 5A0265BFED | Apprenticeship Sponsor | Jun 30, 2019 |
| South Windsor, CT | Filene's | 9FC7F94656 | Apprenticeship Sponsor | Jun 30, 2004 |
| Bristol, CT | Fillmore Electric LLC | 1455509A46 | Apprenticeship Sponsor | Jun 30, 2009 |
| Bristol, CT | Fils Pro Plumbing, LLC | F3A02B54C6 | Apprenticeship Sponsor | Jun 30, 2027 |
| West Hartford, CT | Final Cut Sports Barbershop | F232DA1FCD | Apprenticeship Sponsor | Jun 30, 2022 |
| Madison, CT | Finelli Electric, LLC | 70FA0B614A | Apprenticeship Sponsor | Jun 30, 2026 |
| Roslindale, MA | Finishing Trades Institute of New England | 791ACCC623 | Apprenticeship Sponsor | Jun 30, 2025 |
| Middletown, CT | Finishing Trades Institute of S.N.E. Inc. | 85FB49D6BA | Apprenticeship Sponsor | Jun 30, 2027 |
| Branford, CT | Finkle & Sons Co.,Inc. | D5C1D8B4CF | Apprenticeship Sponsor | Jun 30, 2006 |
| Canaan, CT | Finney Electric LLC | 9EBBD741B1 | Apprenticeship Sponsor | Jun 30, 2027 |
| Greenwich, CT | Fiorito Plumbing & Heating, LLC | 58127B1C8C | Apprenticeship Sponsor | Jun 30, 2006 |
| North Windham, CT | Fire Alarm Specialty Design, LLC | 9917C6DC8D | Apprenticeship Sponsor | Jun 30, 2026 |
| New Milford, CT | FIRE CONTROL SERVICE CO., INC. | 2F9120D0DD | Apprenticeship Sponsor | Jun 30, 2027 |
| Torrington, CT | Fire Equipment Headquarters, Inc. | 52D06E8177 | Apprenticeship Sponsor | Jun 30, 2027 |
| Norwalk, CT | Fire Prevention Service, Inc. | 0144E61BC1 | Apprenticeship Sponsor | Jun 30, 2021 |
| Cheshire, CT | Fire Protection Alarms, LLC | 20B668C730 | Apprenticeship Sponsor | Jun 30, 2027 |
| Cheshire, CT | FIRE PROTECTION EXTINGUISHERS, LLC | B93C6455CF | Apprenticeship Sponsor | Jun 30, 2027 |
| Cromwell, CT | Fire Protection Systems, LLC | 238EAB9F6D | Apprenticeship Sponsor | Jun 30, 2008 |
| Cheshire, CT | Fire Protection Team LLC | 587A6A38CA | Apprenticeship Sponsor | Jun 30, 2027 |
| Palmer, MA | Fire Service Group LLC | 72A53DB9D5 | Apprenticeship Sponsor | Jun 30, 2020 |
| Southington, CT | Fire Technology Inc. | 3DF76AD7B5 | Apprenticeship Sponsor | Jun 30, 2017 |
| Burlington, CT | FIREHOUSE FUELS, LLC | 233592433F | Home Heating Fuel Dealer + 3 more | Sep 30, 2027 |
| Bethel, CT | Firestop, Inc. dba Rieve Plumbing & Mechanical | 1E3B2090CD | Apprenticeship Sponsor | Jun 30, 2027 |
| Stafford Springs, CT | First Choice Home Services, LLC | B5B4D08DAC | Apprenticeship Sponsor | Jun 30, 2020 |
| Derby, CT | First Choice Plumbing, LLC | E9F9E81DB0 | Apprenticeship Sponsor | Jun 30, 2010 |
| Cromwell, CT | First Line Electric LLC | 51E9A03184 | Apprenticeship Sponsor | Jun 30, 2022 |
| Cromwell, CT | First Line Services, LLC | 0E84E24579 | Apprenticeship Sponsor | Jun 30, 2025 |
| Stamford, CT | First Spartan Electric, LLC | 249984BCA5 | Apprenticeship Sponsor | Jun 30, 2025 |
| Old Lyme, CT | Fischer Heating & Air Conditioning LLC | 7C8AE21FD2 | Apprenticeship Sponsor | Jun 30, 2016 |
| Branford, CT | Fitzgerald & Wood, Inc. | D97672A564 | Apprenticeship Sponsor | Jun 30, 2027 |
| Monroe, CT | Fitzpatrick Electric, LLC | E6A04D0ED3 | Apprenticeship Sponsor | Jun 30, 2018 |
| Haddam, CT | Fitzpatrick Mechanical, LLC | EFB0B08E97 | Apprenticeship Sponsor | Jun 30, 2023 |
| Newington, CT | Flagg Plumbing, LLC | 0085DEC83B | Apprenticeship Sponsor | Jun 30, 2012 |
| Hamden, CT | Flagship Electrical & Telecom, LLC | 48964CD1C3 | Apprenticeship Sponsor | Jun 30, 2011 |
| Darien, CT | Flaherty Plumbing & Heating Inc. | 1F4C300E80 | Apprenticeship Sponsor | Jun 30, 2020 |
| Glastonbury, CT | Flanagan Industries | D4FE63F223 | Apprenticeship Sponsor | Jun 30, 2017 |
| Wethersfield, CT | Flattery's Landscaping, Inc. | C512171895 | Apprenticeship Sponsor | Jun 30, 2008 |
| Forestville, CT | Fletcher's Plumbing & Heating, Inc. | F1A6DE09A9 | Apprenticeship Sponsor | Jun 30, 2010 |
| 06451, CT | flip the switch electrical | 6D27769FDA | Apprenticeship Sponsor | Jun 30, 2027 |
| Canton, MA | Florence Electric, LLC | 739F7AE0D2 | Apprenticeship Sponsor | Jun 30, 2018 |
| North Haven, CT | Floriano's Plumbing Inc. | EC2128E359 | Apprenticeship Sponsor | Jun 30, 2027 |
| Bozrah, CT | Flowe Manufacturing | 9C7C8FB514 | Apprenticeship Sponsor | Jun 30, 2023 |
| Cromwell, CT | Floyd Manufacturing Company | DF01F290C2 | Apprenticeship Sponsor | Jun 30, 2021 |
Alphabetical order — this site ranks no one. Businesses with at least one active credential in the Connecticut eLicensing file of October 1, 2026. How to read this.