Company Legacy

Our Story.

From a single refrigeration shop on Chicago's south side to a 100% employee-owned, full-service MEP+™ contractor — six decades of deliberate growth, one discipline at a time.

Our History

Six Decades In The Making

Every group, office, and facility on this timeline was added because a customer needed it — not because a market looked attractive. That is how a refrigeration company became a complete MEP+™ contractor without ever outgrowing the standards it started with.

1963

Antarctic Refrigeration, Inc. founded by John F. Berzanskis Sr.

1982

Company purchased by John F. Berzanskis Jr.

1985

Company name changed to AMS Mechanical Systems, Inc. AMS expands its services into the Commercial Marketplace.

1990

AMS expands into the Industrial Market.

1996

AMS acquires Press Mechanical Inc.; renamed PMT Nuclear, creating our entry into the Nuclear Engineering & Manufacturing Marketplace.

  • Electrical Group formed

1997

AMS opens its Indiana office to better serve the Indiana Heavy Industrial Market.

2008

AMS adds a Fabrication Facility to serve the Heavy Industrial customer clientele.

2010

AMS receives the largest contract in the history of the company — awarded the BP contract, building GOHT/OSBL, Coker, and fabrication for SB-12 PS.

2012

Systems Integration Group formed.

2013

Plumbing Group formed.

2016

AMS expands into the Mission Critical & Environmental Services markets.

2017

AMS becomes an Employee Owned Company and moves into a new 145,000 square foot Corporate Headquarters & Fabrication Facility.

  • Client Services Group formed

2020

Fire Protection Group formed.

2021

Fire Alarm & Security Groups formed.

2022

Company name changed to AMS Industries, Inc. to better display our commitment to excellence by offering our full MEP+™ suite of services.

  • AMS opens Nashville office

One refrigeration shop. Ten-plus disciplines. Every group on this timeline added because a customer needed it.

Quality · Integrity · Reliability — since 1963