UA Local Union 94 represents the trades of pipefitter, welder, plumber and HVACR service technician. We are one of the oldest in the United States, and today represent 526 journeymen and 67 enrolled apprentices.

Learn more about each of these trades below:


A pipefitter is a tradesperson involved in layout, fabrication, assembly, installation and maintenance and repair of piping systems. These piping systems can include the distribution of all types of fluids, slurries and gasses in residential as well as commercial and industrial markets.

As a pipefitter, you will be qualified to work in many diverse industries, including manufacturing, oil refineries, power plants and the growing natural gas industry developing in the area as a result of the Shale Play.

The systems a pipefitter works on are some of the highest pressure and temperature applications. It requires a thorough knowledge and training to complete the work safely that can be achieved through an Apprenticeship with Local Union #94.


Welders work in every area of the construction industry – anywhere metals and alloys are joined together. Welders work with plumber, pipefitters, sprinkler fitters and HVACR technicians.

As a welder, you will be involved in installation, maintenance and repair of all types of piping systems. You will also join structural steel brackets and supports for piping systems. Welders must be able to work in many different environments and all types of positions, from studying blueprints drawings and specifications for the job, to measuring, cutting and welding using various methods and tools.


Plumbers install, repair, maintain and service piping and plumbing systems and equipment used for potable (drinking) water distribution, sanitary storm water systems and waste disposal.

Plumbers also work on installations for Medical Gas, Solar Panels, Heat Pumps and many other systems critical to the public's health and safety. Plumbers work primarily in new homebuilding and renovation, as well as high-rise and commercial and institutional construction such as schools and hospitals.

HVACR Service Technician

As an HVACR Service Technician, you will be responsible for heating, ventilation, air conditioning and refrigeration services. This includes installation and maintenance of all sizes of heating and cooling systems in residential, commercial, institutional and industrial applications.

Specific job applications for the HVACR Service Tech include complete gas piping installations, high-voltage electrical components and testing, analyzing and start-up of systems.