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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| Aaron Ansaldi | Manchester, CT | — | Installer | 5538 |
| Aaron D Peterson | Coventry, CT | — | Installer | 5469 |
| Aaron Thayer | Colebrook, NH | — | Installer | 5270 |
| Aaron Wisotsky | Carmel, NY | — | Installer | 6527 |
| Adam Bates | Northfield, CT | — | Installer | 6158 |
| Adam Bonito | Woodbury, CT | — | Installer | 6508 |
| Adam M Zadrozny | Farmington, CT | — | Installer | 6151 |
| Adam N Szepesi | Naugatuck, CT | — | Installer | 5585 |
| Adam S Cost | Guilford, CT | — | Installer | 5846 |
| Adam Stelmaszek | Fairfield, CT | — | Installer | 1668 |
| Adelard J Bernais Jr | Hebron, CT | — | Installer | 741 |
| Adolph A Selmani | Madison, CT | — | Pumper / Cleaner | 5185 |
| Adrian H Maxwell | Pawling, NY | — | Installer | 6197 |
| Alain Bourassa | Hampton, CT | — | Installer | 5117 |
| Alan A Chappuis | New Milford, CT | — | Installer | 6330 |
| Alan A Famiglietti | Watertown, CT | — | Installer | 3966 |
| Alan B Cataudella | Shelton, CT | — | Installer | 6053 |
| Alan Daniel Sanford | Vernon Rockville, CT | — | Installer | 6546 |
| Alan F Morelli | Wolcott, CT | — | Installer | 5927 |
| Alan J Towne | Bantam, CT | — | Installer | 3672 |
| Alan Ovesny | Shelton, CT | — | Installer | 3996 |
| Alan P Laliberte | Marlborough, CT | — | Installer | 5524 |
| Alan P Savaria | Plantsville, CT | — | Pumper / Cleaner | 5287 |
| Alan T Lee | North Stonington, CT | — | Pumper / Cleaner | 5567 |
| Albert Colon | Charlton, MA | — | Pumper / Cleaner | 5692 |
| Albert F Doyker Jr | Enfield, CT | — | Installer | 1859 |
| Albert J Piskura Iii | Washington, CT | — | Pumper / Cleaner | 5206 |
| Albert J Piskura Iii | Washington, CT | — | Installer | 6022 |
| Albert M Bond | Old Lyme, CT | — | Installer | 6235 |
| Albert Voytek Jr | Danbury, CT | — | Installer | 2301 |
| Alec Baribeau | Brooklyn, CT | — | Installer | 6409 |
| Alec P Kaminsky | Bristol, CT | — | Installer | 1821 |
| Aleksander Andrea | Norwalk, CT | — | Installer | 6425 |
| Alex R Roberts | Bethel, CT | — | Installer | 5423 |
| Alexander P Britschock | Manchester, CT | — | Installer | 6426 |
| Alexander T Audet | Woodstock, CT | — | Pumper / Cleaner | 5667 |
| Alfonso R Bernardi | Watertown, CT | — | Pumper / Cleaner | 3747 |
| Alfred Girardi Jr | Madison, CT | — | Installer | 6054 |
| Alfred Godek | Yalesville, CT | — | Installer | 5038 |
| Alfred H Smith Jr | East Lyme, CT | — | Installer | 1727 |
| Alfred N Sadow | Willington, CT | — | Installer | 3833 |
| Alfred R Dufresne | Dayville, CT | — | Installer | 3951 |
| Alfred Rose | North Branford, CT | — | Installer | 2579 |
| Alfred Wright | Port Saint Lucie, FL | — | Installer | 2961 |
| Allan E Koiva | Tolland, CT | — | Installer | 6036 |
| Allen Clifford O'Dell | Wallingford, CT | — | Installer | 2514 |
| Americo D Petrizzi Iii | Fairfield, CT | — | Pumper / Cleaner | 5401 |
| Americo Paniccia | Trumbull, CT | — | Installer | 1439 |
| Andrea P Puzio | North Haven, CT | — | Pumper / Cleaner | 5677 |
| Andrew A Finlay | Waterbury, CT | — | Installer | 6332 |
| Andrew C Rose | Collinsville, CT | — | Installer | 5180 |
| Andrew Downie | Westbrook, CT | — | Installer | 6098 |
| Andrew E Carlson | North Grosvenordale, CT | — | Pumper / Cleaner | 5448 |
| Andrew G Pappas | Niantic, CT | — | Installer | 3081 |
| Andrew George Green | Columbia, CT | — | Installer | 6547 |
| Andrew H Dayon | Glastonbury, CT | — | Installer | 6168 |
| Andrew J Kopchak | Sandy Hook, CT | — | Installer | 5286 |
| Andrew Jacob Allen Anglace | Southbury, CT | — | Installer | 6477 |
| Andrew K Marchese | Tolland, CT | — | Pumper / Cleaner | 5367 |
| Andrew Kowolenko | Old Saybrook, CT | — | Installer | 5897 |
| Andrew L Minicucci | Columbia, CT | — | Pumper / Cleaner | 5711 |
| Andrew L Tetreault | Sterling, CT | — | Installer | 6226 |
| Andrew P Kapusta | Stamford, CT | — | Pumper / Cleaner | 5514 |
| Andrew P Kapusta | Stamford, CT | — | Installer | 6562 |
| Andrew P Palker | Litchfield, CT | — | Installer | 2522 |
| Andrew P Yurkevicius | Wauregan, CT | — | Pumper / Cleaner | 5555 |
| Andrew S Folcik Jr | East Hampton, CT | — | Installer | 1820 |
| Andrew S Gilbert | Ellington, CT | — | Installer | 6083 |
| Andrew T Hrubiec | Kensington, CT | — | Installer | 6366 |
| Andrew V Larkins | Guilford, CT | — | Installer | 6280 |
| Andrew W Coleman | Ellington, CT | — | Installer | 5839 |
| Andrian S Kebalo | Ellington, CT | — | Installer | 6243 |
| Angelo Antolino | Mahopac, NY | — | Installer | 6141 |
| Angelo G Moscato Jr. | Guilford, CT | — | Installer | 5771 |
| Angelo Pennella | Mahopac, NY | — | Installer | 5594 |
| Angelo Procaccini | Darien, CT | — | Installer | 6432 |
| Anthony C Tomas | Norwalk, CT | — | Installer | 5241 |
| Anthony Deluca | Redding, CT | — | Installer | 3346 |
| Anthony F Noto | Gaylordsville, CT | — | Installer | 5871 |
| Anthony F Sasso | Danbury, CT | — | Pumper / Cleaner | 5515 |
| Anthony J Amoroso | Bethlehem, CT | — | Installer | 5537 |
| Anthony J Diiorio | Newtown, CT | — | Installer | 6372 |
| Anthony J Gasperini | Great Barrington, MA | — | Pumper / Cleaner | 5375 |
| Anthony J Mares | Baltic, CT | — | Installer | 2974 |
| Anthony J Pellecchia | Brooklyn, CT | — | Installer | 6063 |
| Anthony J Silvestri | Ledyard, CT | — | Installer | 1956 |
| Anthony J Urbano | Madison, CT | — | Installer | 3305 |
| Anthony L Capuano | Stratford, CT | — | Installer | 6003 |
| Anthony Lafata | Guilford, CT | — | Installer | 5688 |
| Anthony M Pearce | North Haven, CT | — | Pumper / Cleaner | 5125 |
| Anthony P Skut | Coventry, CT | — | Installer | 5269 |
| Anthony R Montesi | Roxbury, CT | — | Installer | 6136 |
| Anthony S Galko | Northford, CT | — | Installer | 6091 |
| Anthony T Bongiovanni | Haddam, CT | — | Installer | 6254 |
| Antonio Ferreira | Patterson, NY | — | Installer | 5503 |
| Antonio Iadarola | Southbury, CT | — | Installer | 5370 |
| Antonio J Gammardella | New Milford, CT | — | Installer | 6172 |
| Antonio Mendes | Danbury, CT | — | Pumper / Cleaner | 5660 |
| Archie Bailey | North Branford, CT | — | Installer | 2391 |
| Arden Williams | Brookfield, CT | — | Installer | 2853 |
| Arne C Johnson | Sherman, CT | — | Installer | 5624 |
| Arthur A Clark | Pound Ridge, NY | — | Installer | 5638 |
| Arthur C Pires | North Haven, CT | — | Installer | 5606 |
| Arthur D Breault | Hebron, CT | — | Installer | 5349 |
| Arthur E Ogden | Columbia, CT | — | Installer | 3001 |
| Arthur Frattini | Charleston, RI | — | Installer | 2296 |
| Arthur Goulart Jr | Bozrah, CT | — | Installer | 2556 |
| Arthur J Gottier | Tolland, CT | — | Installer | 610 |
| Arthur J Lebert | Clinton, CT | — | Installer | 6244 |
| Arthur L Jenkins Ii | Willimantic, CT | — | Pumper / Cleaner | 5588 |
| Arthur L Ogonoski Jr | Burlington, CT | — | Installer | 1643 |
| Arthur Ruff Jr | Glastonbury, CT | — | Installer | 2765 |
| Austin C Bessette | Stafford Springs, CT | — | Pumper / Cleaner | 5560 |
| Austin C Primus | Southington, CT | — | Installer | 6328 |
| Austin O Saunders | Old Saybrook, CT | — | Installer | 6548 |
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