| PORTLAND WINAIR CO.Location not reported, CT · Active | Location not reported, CT | Corporation | May 15, 1980 | Active |
| WINSUPPLY WILLIMANTIC CT CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Sep 23, 1988 | Active |
| THAMES VALLEY WINSUPPLY CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 20, 1989 | Active |
| BRANFORD WINNELSON CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Dec 22, 1993 | Active |
| BAYSTATE WINAIR CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Feb 1, 1994 | Active |
| WINSUPPLY SHELTON CT CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Feb 22, 1994 | Active |
| SHELTON WINAIR CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 19, 1994 | Active |
| WINSUPPLY WALLINGFORD CT CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 19, 1994 | Active |
| WINSUPPLY MIDDLETOWN CT CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 19, 1994 | Active |
| WINSUPPLY BRISTOL CT CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 19, 1994 | Active |
| WARWICK WINWATER WORKS CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jun 28, 1995 | Active |
| NORTHERN WINDUSTRIAL CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jun 6, 1996 | Active |
| WINSUPPLY STAMFORD CT CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Aug 13, 1996 | Active |
| CONNECTICUT WINPUMP CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Aug 23, 1996 | Active |
| DANBURY WINAIR CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Nov 5, 1998 | Active |
| WINSUPPLY ELMSFORD NY CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jan 13, 1999 | Active |
| WINSUPPLY ESSEX CT CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jun 1, 2001 | Active |
| CRANSTON WINDUSTRIAL COLocation not reported, CT · Active | Location not reported, CT | Corporation | Aug 6, 2002 | Active |
| AUBURN WINWATER WORKS CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Apr 27, 2004 | Active |
| WINSUPPLY WORCESTER MA CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jan 18, 2012 | Active |
| BAYSTATE WINSUPPLY CO.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Feb 21, 2012 | Withdrawn |
| NEW HAVEN WINDUSTRIAL SUPPLY CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Nov 19, 2012 | Active |
| DANBURY WINSUPPLY CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Dec 17, 2012 | Active |
| MANCHESTER WINSUPPLY CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jan 10, 2018 | Active |
| BILLERICA WINWATER WORKS CO.Location not reported, CT · Active | Location not reported, CT | Corporation | May 2, 2022 | Active |
| WINSUPPLY W HARTFORD CT CO.Location not reported, CT · Active | Location not reported, CT | Corporation | Jan 9, 2023 | Active |
| Winsupply Pawtucket RI Co.Location not reported, CT · Active | Location not reported, CT | Corporation | Dec 30, 2024 | Active |