Serving the HVACR Industry since 1935.

Allied Supply Company is a full service wholesale distributor of heating, ventilating, air conditioning, refrigeration, air filtration and building management controls. We have six stores located in Lima, Mansfield, Toledo, Cincinnati and Columbus with our headquarters office/store in Dayton, Ohio. Allied Supply serves all of Ohio, Eastern Indiana, Southern Michigan and Northern Kentucky markets. We sell only to contractors and end-users that are in the business of maintaining HVACR and industrial equipment.

The Allied Supply Company Leadership

Allied Supply Company is a family-owned and operated business, founded by John Homan in 1935. The current leadership team is made up of John's descendants, who are committed to carrying on his legacy of providing excellent customer service and high-quality products.

  • John Homan

    Founder
    1935 - 1952

  • Jack Homan

    President
    1952 - 1971

  • Bill Homan

    President
    1971 - 1985

  • Jim Homan

    President
    1985 - 2004

  • Tom Homan

    President
    2004 - 2023

  • Scott Gibbons

    President
    2023 - Current

A Leader in the HVACR Industry

Today Allied Supply offers over 12,000 products from over 160 manufacturers and serves over 2,000 customers per year.  The company is the Midwest leader in HVACR solutions – offering specialized expertise in air filtration, controls, HVACR parts and equipment and refrigeration.

Historical Timeline

  • 1935

    In the midst of the Great Depression, John L. Homan worked for Frigidaire in Dayton, Ohio, when he saw a growing demand for refrigeration and cooling solutions. Along with two partners, John launched the Allied Parts Company in Dayton, Ohio. John later assumed full ownership of the parts side of the business and moved the company to Stratford Avenue and later Monument Avenue. However both of these sites were later demolished during the construction of Interstate 75.

  • 1945

    The Lima branch office is initially opened on South Union Street and later moves to its present location of 460 S. Main Street. The rent for the one room store is $80 per month.

    1949

    The company becomes incorporated as Allied Supply Company.

  • 1950

    To help alleviate the peaks and valleys of the seasonal business, Allied Supply begins to distribute television and electronic parts and in 1951 adds radios, television sets and paint to their product line.

    1952

    John Homan is elected Chairman of the Board, while his son, Jack Homan takes over as President and General Manager of the Allied Supply Company.

    1957

    The current headquarters building at 1100 E. Monument Avenue is purchased from the Thresher Paint & Varnish Company. The 65,000 Square Feet building had been constructed in 1886 and had an extensive history first as a manufacturing facility of railroad cars and later as a paint factory. The last railroad cars were produced in 1921 and were used as street cars for the Dayton and Troy Electric Railway.

  • 1960

    Allied Supply launches its profit sharing plan for employees as well as expands its consumer goods line with Gibson Appliances.

    1964

    The company enters the furniture wholesale business.

    1967

    Thirty-two years after the founding of his company, John L. Homan passes away.

    1969

    Electronic controls by Honeywell and Johnson Controls are added to the product line.

  • 1970

    Jack Homan becomes Chairman of the Board and his brother, William Homan, is elected President and General Manager.

    1971

    Allied Supply leaves the electronic parts, television sets and furniture business.

    1977

    Jack Homan retires and William Homan assumes the duties of Chairman of the Board and Chief Executive Officer.

    1978

    The Mansfield, Ohio branch is opened.

  • 1982

    William Homan makes the decision to focus on only HVACR solutions and drops the Gibson line of appliances.

    1983

    Air filtration solutions by Camfil are added.

    1985

    John's grandson, James Homan, is named President and CEO.

    1986

    The Toledo, Ohio, branch is opened.

  • 1990

    Copeland Compressors are added to the product line.

    1992

    The Cincinnati, Ohio, branch is opened.

    1995

    Mini-split HVAC equipment from Mitsubishi is added.

  • 2004

    James's brother, Thomas Homan, is named President and CEO.

    2008

    The Dayton headquarters is renovated including an upgrade of the telecommunications and computer systems.

    2009

    The Cincinnati branch moves to its new and current location.

  • 2010

    Allied Supply celebrates its 75th anniversary.

    2011

    The Lima branch is remodeled and adds 4,000 Square Foot. New division managers are brought on board to lead the refrigeration, controls and HVACR equipment units.

    2013

    Allied Supply purchases Columbus Automatic Sprayer Co. to become the new Columbus branch.

    2014

    Modine and Bard product lines are added.

    2016

    Hoshizaki Ice Machines and Reach In Refrigerators Product Line added.

    2018

    Appointed the Sole Distributor for York Centrifugal Chiller Parts for the State of Ohio.

  • 2020

    Allied Supply celebrates 85 years of serving you. Selected as the official supplier of the Original RLS line.

    2021

    Seitron Americas product line added.

    2022

    Century product line is added.

    2023

    NAVAC product line added.

    Scott Gibbons is named President.

    Milwaukee Tools product line added.

    2025

    Toledo store remodeled.

    SMARTLOCK line added.

    Allied Supply celebrates its 90th anniversary.