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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| Malcolm J Lyon | Groton, CT | — | Installer | 3796 |
| Manuel Rodrigues | Bridgeport, CT | — | Installer | 3002 |
| Marc Joseph Zappone | Plymouth, CT | — | Installer | 5941 |
| Marc K Healey | W Haven, CT | — | Installer | 97 |
| Marc R Lamoureux | West Suffield, CT | — | Pumper / Cleaner | 5605 |
| Marc S Larochelle | Tolland, CT | — | Installer | 6465 |
| Marc W Sweeney | Portland, CT | — | Pumper / Cleaner | 5407 |
| Marcel Breton | Stratford, CT | — | Installer | 2661 |
| Mario G Mancini | Watertown, CT | — | Installer | 3178 |
| Mario Mallozzi | Monroe, CT | — | Installer | 2731 |
| Mark A Abney Jr | New Milford, CT | — | Installer | 5752 |
| Mark A Bahre | Collinsville, CT | — | Installer | 3556 |
| Mark A Cardillo | Bethel, CT | — | Installer | 6234 |
| Mark A Carilli | Coventry, CT | — | Installer | 6442 |
| Mark A Caviola | South Salem, NY | — | Installer | 5805 |
| Mark A Machnik | Old Lyme, CT | — | Installer | 3283 |
| Mark A Richard | Westbrook, CT | — | Installer | 3600 |
| Mark A Spazzarini | Enfield, CT | — | Installer | 5574 |
| Mark B Beecher | Torrington, CT | — | Installer | 5702 |
| Mark C Green | Waterbury, CT | — | Installer | 5982 |
| Mark Cannavo | Winsted, CT | — | Installer | 2757 |
| Mark Capanna | Prospect, CT | — | Installer | 3994 |
| Mark Celentano | North Branford, CT | — | Installer | 5188 |
| Mark D Bakaj | Lebanon, CT | — | Installer | 5754 |
| Mark D Jungen | Woodbury, CT | — | Installer | 3271 |
| Mark D Kudlach Jr | Taftville, CT | — | Installer | 5896 |
| Mark E Dattilo | North Branford, CT | — | Pumper / Cleaner | 5356 |
| Mark E Poletto | New Milford, CT | — | Pumper / Cleaner | 3786 |
| Mark F Dougherty | Simsbury, CT | — | Installer | 5619 |
| Mark Fairchild | Thomaston, CT | — | Installer | 5311 |
| Mark G Snow | Middletown, CT | — | Installer | 5893 |
| Mark Grube | Danbury, CT | — | Installer | 3894 |
| Mark H Moulin | Canterbury, CT | — | Installer | 5605 |
| Mark Hargrove Jr | Norwalk, CT | — | Pumper / Cleaner | 5208 |
| Mark J Meyers | Oakdale, CT | — | Installer | 5060 |
| Mark L Wilson | Middletown, CT | — | Installer | 5125 |
| Mark Lowe | Roxbury, CT | — | Installer | 2842 |
| Mark M Ovesny | Southbury, CT | — | Installer | 6430 |
| Mark Oczkowski | Oxford, CT | — | Installer | 2933 |
| Mark Piontkowski | Middletown, CT | — | Installer | 3451 |
| Mark R Christo | Monroe, CT | — | Pumper / Cleaner | 5678 |
| Mark R Darby | Southbury, CT | — | Installer | 6099 |
| Mark R Dean Jr | Voluntown, CT | — | Installer | 5911 |
| Mark Romano | Shelton, CT | — | Installer | 5879 |
| Mark S Bradley | Oakdale, CT | — | Pumper / Cleaner | 5659 |
| Mark S Perkins Jr | North Stonington, CT | — | Installer | 6248 |
| Mark S Williams | Andover, CT | — | Installer | 5462 |
| Mark T Eitelman | Ellington, CT | — | Installer | 3917 |
| Mark T Garrison | Mansfield, CT | — | Installer | 5933 |
| Mark Ustico | Canaan, CT | — | Installer | 887 |
| Mark V Larkins | Guilford, CT | — | Installer | 3222 |
| Mark W Labonte | Woodstock, CT | — | Installer | 3798 |
| Martin Alonso | Woodbridge, CT | — | Pumper / Cleaner | 5668 |
| Martin Alonso | Woodbridge, CT | — | Installer | 6564 |
| Martin Galaburri | Monroe, CT | — | Pumper / Cleaner | 5175 |
| Martin L Ethier | S Glastonbury, CT | — | Installer | 3687 |
| Martin T Rochette | North Branford, CT | — | Installer | 5694 |
| Martin Wright | Hingham, MA | — | Installer | 3061 |
| Matthew A Lambrech | Sherman, CT | — | Installer | 3207 |
| Matthew B Murchison | Branford, CT | — | Installer | 6479 |
| Matthew Blasavage | Litchfield, CT | — | Installer | 5616 |
| Matthew C Choptij | South Windsor, CT | — | Installer | 6294 |
| Matthew D Behrendt | Winsted, CT | — | Installer | 5985 |
| Matthew D Maynard | Storrs Mansfield, CT | — | Installer | 5689 |
| Matthew Dubray | Ossining, NY | — | Installer | 6424 |
| Matthew Grabber | Lebanon, CT | — | Installer | 6376 |
| Matthew J Bowman | Cheshire, CT | — | Installer | 1968 |
| Matthew J Holland | New Milford, CT | — | Installer | 6110 |
| Matthew J Jakan | Canterbury, CT | — | Installer | 6313 |
| Matthew J Kacerguis | Bethlehem, CT | — | Installer | 3272 |
| Matthew J Wilcox | Suffield, CT | — | Installer | 6499 |
| Matthew Kertanis | Suffield, CT | — | Installer | 6367 |
| Matthew L Farmer | Canaan, CT | — | Installer | 6437 |
| Matthew P Mckinney | Bethany, CT | — | Installer | 5895 |
| Matthew P Petrizzi | Greenwich, CT | — | Pumper / Cleaner | 5402 |
| Matthew Pytlik | Haddam, CT | — | Installer | 6198 |
| Matthew Quigley | Bozrah, CT | — | Installer | 6490 |
| Matthew R Anderson | Millbury, MA | — | Installer | 6406 |
| Matthew R Stark | Old Lyme, CT | — | Installer | 6207 |
| Matthew Raymond Cisero | Woodbury, CT | — | Installer | 6476 |
| Matthew S Hazelwood | Wallingford, CT | — | Installer | 6026 |
| Maurice F Fabiani Jr | Oakville, CT | — | Installer | 1223 |
| Maurice J Tate | Hope Valley, RI | — | Installer | 5732 |
| Melvin R Mcbreairty | New Milford, CT | — | Installer | 3280 |
| Mercurio Porco | Sandy Hook, CT | — | Installer | 3049 |
| Merritt C Bird | Burlington, CT | — | Installer | 3881 |
| Merritt G Knight | Willington, CT | — | Installer | 3645 |
| Michael A Bosco | Harwinton, CT | — | Installer | 6269 |
| Michael A Curtiss | Naugatuck, CT | — | Pumper / Cleaner | 5681 |
| Michael A Guarniere | North Haven, CT | — | Installer | 6004 |
| Michael A Houle | Stafford Springs, CT | — | Installer | 5948 |
| Michael A Mancini | Waterbury, CT | — | Installer | 5159 |
| Michael A Morrone | Westerly, RI | — | Installer | 5855 |
| Michael A Orsini | Ivoryton, CT | — | Installer | 5960 |
| Michael A Perrault | New Milford, CT | — | Pumper / Cleaner | 5339 |
| Michael A Sniffin | Bethlehem, CT | — | Installer | 6012 |
| Michael A Terwilliger | New Hartford, CT | — | Installer | 5017 |
| Michael A Weglarz | Middlebury, CT | — | Pumper / Cleaner | 5306 |
| Michael Alexander Gavoni | Ludlow, MA | — | Installer | 6474 |
| Michael Anthony Esposito | Harrisville, RI | — | Installer | 6468 |
| Michael Anthony Zingarella Jr | Clinton, CT | — | Installer | 6515 |
| Michael Autuori | Ridgefield, CT | — | Installer | 2359 |
| Michael B Linton | Palmer, MA | — | Pumper / Cleaner | 5696 |
| Michael B Poresky | Newington, CT | — | Installer | 6321 |
| Michael B Roberts | Southington, CT | — | Installer | 5464 |
| Michael Bakaj | Lebanon, CT | — | Installer | 3460 |
| Michael Breault | Hebron, CT | — | Installer | 6403 |
| Michael Burton | Sandy Hook, CT | — | Installer | 3523 |
| Michael C Datin | Newtown, CT | — | Installer | 2592 |
| Michael C Davis | Southington, CT | — | Installer | 5478 |
| Michael C Laska | Stafford Springs, CT | — | Installer | 3973 |
| Michael Camarota | Guilford, CT | — | Installer | 5786 |
| Michael D Baker | East Hartland, CT | — | Pumper / Cleaner | 5645 |
| Michael D Blanchette | Suffield, CT | — | Installer | 6135 |
| Michael D Gawel | Sheffield, MA | — | Installer | 6240 |
| Michael D Maus | Hadlyme, CT | — | Installer | 2647 |
| Michael D Norcross | Coventry, CT | — | Installer | 6061 |
| Michael D Pineault | Colchester, CT | — | Installer | 2651 |
| Michael D Purinton | West Suffield, CT | — | Installer | 5496 |
| Michael Dipietro | Kensington, CT | — | Installer | 6557 |
| Michael E Czesnowski | Monroe, CT | — | Installer | 3843 |
| Michael E Parker | East Haddam, CT | — | Installer | 6181 |
| Michael E Schmaltz | Wolcott, CT | — | Installer | 6310 |
| Michael Edward Paonessa | Berlin, CT | — | Installer | 6467 |
| Michael F Carlone | New Hartford, CT | — | Installer | 3930 |
| Michael F Maiorino | Norwalk, CT | — | Installer | 5548 |
| Michael F Porco Jr | Newtown, CT | — | Installer | 5327 |
| Michael F Wilcox | Canton, CT | — | Installer | 4062 |
| Michael G Herde | Oxford, CT | — | Installer | 3075 |
| Michael G Mc Allen | Prospect, CT | — | Installer | 5525 |
| Michael G Mocko Jr | Stafford Springs, CT | — | Installer | 5691 |
| Michael Gendreau | Hampton, CT | — | Installer | 4069 |
| Michael Grubisa | Botsford, CT | — | Installer | 2525 |
| Michael H Bosco | Harwinton, CT | — | Pumper / Cleaner | 5445 |
| Michael H Laurentus | Danbury, CT | — | Installer | 3350 |
| Michael H Malin | Milford, CT | — | Pumper / Cleaner | 5332 |
| Michael H Malin | Milford, CT | — | Installer | 5890 |
| Michael Huminski | Norwalk, CT | — | Installer | 991 |
| Michael J Borruso | Essex, CT | — | Installer | 6265 |
| Michael J Cobuzzi | Berlin, CT | — | Installer | 6513 |
| Michael J Connors | Ridgefield, CT | — | Installer | 6312 |
| Michael J Curran | Moosup, CT | — | Installer | 4036 |
| Michael J Iapaluccio | Brookfield, CT | — | Installer | 4038 |
| Michael J Izbicki | Groton, CT | — | Installer | 2191 |
| Michael J Lathrop Jr | New Fairfield, CT | — | Pumper / Cleaner | 5697 |
| Michael J Lenihan | Stonington, CT | — | Installer | 3932 |
| Michael J Mazzucco | Danbury, CT | — | Installer | 2832 |
| Michael J Mcgee | Oxford, CT | — | Installer | 6399 |
| Michael J Parent | Washington Depot, CT | — | Installer | 5693 |
| Michael J Shvonski | Coventry, CT | — | Installer | 6218 |
| Michael J Webber | Sherman, CT | — | Installer | 5018 |
| Michael J Zappone | Plymouth, CT | — | Installer | 5954 |
| Michael L Copeland | Bethany, CT | — | Installer | 5679 |
| Michael L Sicard | Coventry, CT | — | Installer | 6395 |
| Michael Lane | Deep River, CT | — | Pumper / Cleaner | 5077 |
| Michael Lathrop | New Fairfield, CT | — | Installer | 3397 |
| Michael M Giuliano | Bethany, CT | — | Installer | 462 |
| Michael Mastrobattisto | Burlington, CT | — | Installer | 2857 |
| Michael Milano | Killingworth, CT | — | Installer | 5122 |
| Michael Milo | Mahopac, NY | — | Pumper / Cleaner | 5593 |
| Michael N Infante | Monroe, CT | — | Installer | 1629 |
| Michael Nebelung | Niantic, CT | — | Installer | 5213 |
| Michael O Diiorio | Bethel, CT | — | Installer | 6378 |
| Michael Olsen | Deep River, CT | — | Installer | 218 |
| Michael P Czmyr | Ashford, CT | — | Installer | 3315 |
| Michael P Faroni | Bethany, CT | — | Installer | 6484 |
| Michael P Hupal | Greenwich, CT | — | Installer | 3320 |
| Michael P Noti | Old Lyme, CT | — | Installer | 6071 |
| Michael Pavlowski | Naugatuck, CT | — | Pumper / Cleaner | 5361 |
| Michael R Coppola | Ringwood, NJ | Passaic | Pumper / Cleaner | 5129 |
| Michael R Jenkins | Chaplin, CT | — | Installer | 4007 |
| Michael R Zarotney | Old Saybrook, CT | — | Installer | 6471 |
| Michael Roy | East Hampton, CT | — | Installer | 6322 |
| Michael Ryan Boyd | Somers, CT | — | Pumper / Cleaner | 5707 |
| Michael S Brown | Portland, CT | — | Installer | 3483 |
| Michael S Camarota Jr | Durham, CT | — | Installer | 6357 |
| Michael S Cathcart | Hadlyme, CT | — | Installer | 3388 |
| Michael S Daddario | Suffield, CT | — | Installer | 2645 |
| Michael S Dickson | Glover, VT | — | Installer | 6272 |
| Michael S Hipsky | Willington, CT | — | Installer | 6278 |
| Michael S Macclain | Glastonbury, CT | — | Installer | 5577 |
| Michael S Pierwola | Sandy Hook, CT | — | Installer | 5162 |
| Michael S Shaw | Moodus, CT | — | Installer | 6535 |
| Michael S Slater | Hampton, CT | — | Installer | 6038 |
| Michael S Small | Hamden, CT | — | Installer | 6080 |
| Michael Sabia | Easton, CT | — | Installer | 3822 |
| Michael Salafia | Guilford, CT | — | Installer | 6338 |
| Michael Schulze | Voluntown, CT | — | Installer | 5256 |
| Michael T Guiher | Preston, CT | — | Installer | 6495 |
| Michael Vigue | Harwinton, CT | — | Installer | 6292 |
| Michael W Flynn | Liberty, ME | — | Installer | 2098 |
| Michael W Heard | Quaker Hill, CT | — | Installer | 5967 |
| Michael W Ray | Eastham, MA | — | Installer | 3226 |
| Michael W Whitcomb | New Milford, CT | — | Installer | 5652 |
| Michael Woloshchuk | Monson, MA | — | Installer | 5198 |
| Michelle R Deremer | Groton, CT | — | Installer | 5383 |
| Mike Carboni | New Milford, CT | — | Installer | 5756 |
| Mike Dykas | Salem, CT | — | Installer | 3619 |
| Mike J Pezzente | New Hartford, CT | — | Installer | 5784 |
| Mitchell W Alibozak | Litchfield, CT | — | Installer | 6047 |
| Monique L Maddox | Bethlehem, CT | — | Installer | 5015 |
| Morgan Fletcher Coolbeth | Lecanto, FL | — | Installer | 6533 |
| Murray A Phelps Iii | South Yarmouth, MA | — | Installer | 3779 |
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