The Kelso Era: 1933 to Today

Built on lasting tradition, thriving with innovation. With nearly a century of experience, Kelso Industries continues the legacy of our unified operating companies.

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Koch Mechanical is founded in Salt Lake City, Utah.

Koch Mechanical Inc. is among the oldest mechanical contractors in the Intermountain West.

1933
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Wallace Electric is founded in Jackson, Georgia.

With over 80 years of experience, they have completed virtually all types of electrical projects, including commercial, industrial, and institutional installations.

1937
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Advanced Arizona is founded.

Advanced Heating & Cooling has served more than 1,000 different clients throughout Idaho, Arizona, Utah and the Western United States.

1961
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Quality Heating & Air is founded.

QH&A (Quality Heating and Air) provides sheet metal and air conditioning services throughout the Mid-Atlantic region of the United States.

1966
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Frey Lutz is founded.

Their journey to become a leader in the HVAC and plumbing construction industry began with a focus on providing quality work and serving their customers—a tradition they continue to uphold today.

1967
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RGD & Sons is founded.

As they move into their 3rd generation of superior plumbing and HVAC services, RGD & Sons remains uniquely dedicated to safety.

1969
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Advanced Utah is founded.

Their mission is to provide the best heating and air conditioning solutions and service to general contractors and building owners in any market they serve.

1982
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Advanced Idaho is founded.

They focused on providing an amazing work environment, developing state-of-the-art methods, and demonstrating an unsurpassed ability to bring their clients’ concepts to final completion.

1982
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APG Electric, Inc. is founded.

APG Electric, Inc., founded in 1984 in Largo, Florida, traces its roots back to 1915 through The Doan Electric Company of Cleveland, with support from Doan’s principals, and has since grown into a respected electrical contractor in the Tampa Bay area.

1984
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Retrofit Technology is founded.

Tony Grano and his late wife, Sandy, founded Retrofit Technology with a single truck and a passion. Thirty years later, the company has grown into a top-notch, family-operated business employing over 40 people.

1989
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LLR Electric, Inc. is founded.

With a staff of over 50 employees, LLR Electric is a family-owned and operated, certified woman-owned business whose mission is to provide safe, efficient electrical services with the highest degree of quality and customer service.

1989
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DHR Mechanical is founded in Orlando, Florida.

DHR specializes in the refrigerated food industry throughout Florida, Georgia, Alabama, Tennessee, Mississippi, South Carolina, and North Carolina.

1997
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Four Star Mechanical is founded.

Four Star Mechanical is a family business dedicated to providing commercial and industrial companies with a one-stop shop for  HVAC+R, VRF, and building automation.

1998
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Steve Tate & Son Plumbing is founded.

Based in Mt. Airy, NC, Steve Tate & Son Plumbing provides commercial, residential, and utility plumbing services.

1998
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RMR Mechanical is founded.

At RMR Mechanical, they believe quality is the responsibility of everyone involved in planning, inspecting, or executing work, not just those with QA/QC in their job titles.

2002
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Automated Mechanical is founded.

Automated Mechanical offers HVAC preventative maintenance, emergency repair, building automation, design/build construction, and bio-med/lab refrigeration solutions.

2005
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Feldkamp Design Build is founded.

J. Feldkamp Design Build is a family owned and operated company based out of Cincinnati, Ohio.

2006
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NDBS is founded.

National Design Build Services is a leader in the HVAC Mechanical Services industry with a strong dedication toward mechanical innovation.

2007
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Mullins Mechanical is founded.

Mullins Mechanical is now recognized as one of the fastest growing companies across the Southeast and Sunbelt regions.

2008
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West Coast Automation is founded.

Based in Tempe, Arizona, West Coast Automation offers services to building operators, property managers, and contractors for operating, maintaining, and diagnosing complex mechanical systems and their automation components.

2010