Company History​

We opened our doors in 1948 in St. Paul, Minnesota — see how we’ve grown over the years.

2022

Harris opens second Design Studio in Arlington, VA.

2022

Division23 Mechanical Services in St. Paul, MN is acquired.

2021

Emtech Incorporated in Bowie, MD is acquired.

2021

HVAC Controls & Specialties in Garden City, ID is acquired.

2021

Michel Michno is named CEO of Harris.

2020

In January, Harris announced that it has opened Harris Design Studio in Oakland, CA.

2019

F.W. Spencer & Son is acquired and becomes Harris Bay Area.

2018

Harris acquires Mecham Automation, now named Harris Mountain West – Idaho.

2018

Harris becomes Harris, a unified company with regional offices across the United States.

2018

Harris acquires Diamond B Constructors.

2016

Quality Mechanical Contractors is acquired.

2014

Harris Mechanical Southwest Controls Division in Phoenix, AZ is formed.

2013

Capital City Controls in Capitol Heights, MD is formed.

2012

R.M. Thornton, Inc. in Capitol Heights, MD is acquired and begins operating under the RM Thornton Mechanical division name.

2010

Harris Companies expands the Harris Controls division with the acquisition of Wasatch Controls in Salt Lake City, UT.

2008

Superior Air Handling division in Clearfield, UT is acquired.

2008

Greg Hosch

Greg Hosch is named CEO of Harris Companies.

2007

Climate Control in Phoenix, AZ is acquired and begins operating under Harris Mechanical Southwest division name.

2007

Harris’s St. Paul fabrication shop and HiMEC consolidate to form Midwest Fabrication and Supply in Zumbrota, MN.

2006

The Harris Service division expands with the opening of a regional office in Salt Lake City, UT.

2005

Greg Hosch is named President of Harris Companies.

2005

HiMEC Conveyors and HiMEC At Home are formed operating out of Rochester, MN.

2005

Quality Plumbing and Heating is consolidated into newly acquired HiMEC, Inc. and begins to operate under the HiMEC Mechanical division name.

2005

HiMEC, Inc. in Rochester, MN is acquired.

2005

Harris Mechanical Intermountain division is formed operating out of Salt Lake City, UT.

1997

Harris Controls division is formed operating out of St. Paul, MN.

1997

Harris Mechanical Contracting moves to a newly built corporate office at the current location at 909 Montreal Circle, St Paul, MN.

1997

Paul Thornton takes over as President of Harris Mechanical Contracting.

1994

Quality Plumbing and Heating in Rochester, MN is acquired.

1986

Harris Service division is formed in St. Paul, MN.

1983

Harris Mechanical Contracting incorporates with Robert Hosch as President.

1983

Owners Ron Harris and Sheldon Stewart sell the various Harris Stewart Companies divisions to three employees with Robert Hosch purchasing Harris Mechanical Contracting and Allied Metal Craft, Bob Tippler purchasing Hunt Electric and Northwestern Service Incorporated, and Colin Barnett purchasing the remaining divisions.

1968

Young journeyman/pipefitter Robert Hosch joins Harris Stewart Companies in the Estimating Department.

1968

Harris Stewart Companies moves to 2300 Territorial Road in St. Paul, MN and experiences dramatic growth over the following years with the development of the Harris Mechanical Contracting division and the startups of Northstar Fire Protection, Northwestern Service Incorporated, Allied Metal Craft, Hickory Insulation and Hunt Electric.

1959

Charles Harris turns the company over to his son Ron Harris and his son-in-law Sheldon Stewart and the company becomes Harris Stewart Companies.

1954

Charles Harris buys the Yoerg’s Brewery Company building and moves his business to 229 Ohio Street in St. Paul, MN.

1948

After spending the previous 17 years building the Harris Brothers business with his brother Aaron, Charles Harris sets out on his own and establishes Charles Harris Plumbing Company operating at 474 University Ave, St. Paul, MN.