100th Anniversary Celebration
Wednesday, May 11, 2016

Our 100th Anniversary Celebration weekend is June 24th-June 26th.  Please be sure to visit our dedicated page for the event and we hope to see you there!  Click Here

Welcome to UA Local 550



The Sprinkler Fitters of Local 550 in the Greater Boston area work on both commercial and residential facilities.  From high profile projects such as Gillette Stadium to Strip Malls and Residential Complexes, we've installed the life and property saving systems.

The skilled members of Local 550 have been installing these Fire Protection Systems in Boston since 1916.  If you're interested in using one of our contractors, becoming a member or apprentice, or just have a general question, please don't hesitate to Contact Us!