Steamfitters Local Union 420


Associations/OrganizationsConstruction Services

About Us

Founded in 1903, we are a 113 year old Labor Union representing 4500 members in the Philadelphia and surrounding area.

We provide our customers with the most highly skilled and safely trained Steamfitters, Welders and HVAC technicians in the Delaware Valley.

Our members install and service the most advanced piping and mechanical systems on the market, from nuclear, pharmaceutical and petrochemical facilities, to hospital, higher education and commercial eal estate facilities.

We do it the best and the safest .... the first time. 

Rep/Contact Info

Mr. Kevin Heffernan
Financial Secretary/Treasurer
  • Phone: (267) 350-4200 x112
  • Fax: (267) 350-4225
Tom Redden