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Based in Northville, Michigan, The Long Companies are comprised of three service divisions plus a retail location for bath and kitchen design, remodeling, fixtures and decor.

Long Mechanical is full service mechanical contractor serving the HVAC, Plumbing and Piping needs of commercial and industrial customers.

Long Mechanical Service handles residential heating and cooling services including furnace and air conditioner repair and replacement services.

Long Plumbing services commercial and residential customers with repairs, replacements, installation and maintenance services. From plumbing fixtures, water heaters, piping, sewer cleaning and more, Long Plumbing does it all.

Long Kitchen & Bath Design Gallery, a long-time downtown Northville establishment, offers kitchen and bath design and remodeling services, fixtures, accessories and decor items to enhance your home. Visit website

In all of our divisions, our number one goal is a satisfied customer. Based on our repeat business and client testimonials, we are doing things right. Our customers recommend us for our exceptional quality, competitive pricing, honesty and attentive customer service.

Our Customer Service Policy

  • We are problem-solvers.
  • We keep up with new products and technologies so we can offer our customers the best solutions for their problems.
  • We are polite, respectful, courteous, fair and honest.
  • We leave our customers' homes and businesses cleaner than when we arrived.
  • We are thankful our customers have given us the opportunity to be of service to them, and we thank them for that.
  • We want our customers to tell their friends and neighbors how good we are at what we do.
  • We want our customers to be happy that they called us.

Company History

historic photo of Glenn C. Long building exterior

First location on Seven Mile Road (1954)

historic photo of Long Plumbing building exterior

Dunlap Street showroom (1964)

Historic photo of Long Bath Boutique and Long Plumbing building exterior

Main Street Building (1974)

Long Bath Design Gallery exterior

Main Street Building today

Humble Beginnings: A True Mom-and-Pop Shop

Glenn and Lois Long started Glenn C. Long Plumbing & Heating in 1949 out of their home in Northville, Michigan. Glenn would make the service calls and Lois answered the phone and took care of the company books.

The business began to grow and in 1954 they constructed an office, showroom and warehouse on Seven Mile Road, east of Northville Road, which allowed them to display household appliances and plumbing fixtures. In addition to servicing residential accounts, they began providing plumbing service to businesses. Additional employees were hired to service their growing number of customers.

Moving Downtown & Expanded Capabilities

In 1964, Glenn and Lois acquired property in downtown Northville and a new building was constructed on Dunlap Street. The larger showroom featured plumbing fixtures and stocked parts for plumbing repairs.

In the late 1960s, Long Mechanical became the parent company of Long Plumbing with an expansion of services to our commercial customers.

In 1970, a portion of the downtown showroom was dedicated to bath accessories, which was managed and operated by Virginia Long. This is the the groundwork for today's Long Kitchen & Bath Design Gallery.

Continued business growth led to the construction (in 1974) of the current office, showroom and retail store, then called our "Fancy Bath Boutique," at the north end of Main Street in downtown Northville.

Out-of-State Expansion

Further expansion occurred in 1982 with the opening of JR Long, Inc. in Tampa, Florida. Specializing in commercial plumbing and pipefitting, projects included work at Tampa International Airport, the Tampa Convention Center, and numerous schools and medical facilities. In 2005, after 23 years of operation, JR Long, Inc. was sold to three employees.

The Long Companies Today: Honoring Our Reputation

From the little mom-and-pop operation that began more than 70 years ago, The Long Companies has grown into a multi-million dollar private corporation built on a solid reputation of service and integrity.

Women's Business Enterprise logoIn 2019, Allison Long Burns, granddaughter of the company founders Glenn and Lois Long and daughter of past President Jim Long and Virginia Long, proudly became the third generation President and owner of “The Long Companies.”

While we continue to offer timely, reliable service to our residential customers throughout Metro Detroit, our portfolio of commercial mechanical and HVAC projects continues to expand.

Professional Affiliations

The Long Companies, along with many of our employees, have been active members in numerous industry and local organizations since we began in 1949, often taking on leadership roles. We strongly believe that in order for us to be the best, we need to continually improve our knowledge and skills. We also believe it is crucial to stay current with new regulations, techniques, technologies, and the latest products so that our customers receive the best and most comprehensive sales and service available.

Michigan Plumbing & Mechanical Contractors Association Logo
Mechanical Contractors Association of America Logo
Plumbing-Heating-Cooling Contractors Association Logo
Sheet Metal and Air Conditioning Contractors' National Association Logo
Mechanical Contractors Association, Detroit Logo
Northville Chamber Logo

Learn More About The Long Companies

The Long Companies are proud to be part of this internet-base service industries ratings and referral source designed to help consumers hire verified reputable local professional services contractors.

Plumbing & Mecahanical Magazine Cover

Featured in Plumbing & Mechanical Magazine, November 2009, Up On Main Street

"Long Mechanical has experienced tough times before now. The Detroit metropolitan area, where the plumbing and mechanical contractor works, became mired in the current economic downturn well ahead of the rest of the country. “Michigan has been in a rut for seven years,” Owner Jim Long says. The company, however, has reason to celebrate this year. Long Mechanical commemorated its 60th anniversary June 5 with an open house at its Long Bath Design Gallery showroom for its customers and neighbors in downtown Northville, Mich.… Read More

Copyright © 2009 Long Mechanical, Inc. & Long Plumbing Co.
Serving Southeast Michigan and other Midwest States