MCQUAY® HVAC age

How to determine the date of production/manufacture or age of McQuay® HVAC Systems.

The date of production/manufacture or age of McQuay® HVAC equipment can be determined from the serial number or MFG. DATE located on the data plate.

Parent Company:  DAIKIN North America LLC (Subsidiary of Daikin Global aka Daikin Industries, Ltd.)

Note: McQuay brand name was dropped by Daikin in 2013, ending 80 years of use of the name.

See also: SnyderGeneral, AAF, and Daikin

Example serial number styles/formats found:

  • Style 1:    Serial No. A000129 with MFG. DATE 2008-1
  • Style 2:    FBOU0905048200
  • Style 3:    20444501000138
  • Style 4:    049270032
  • Style 5:    55A1234501
  • Style 6:    5PB1234503
  • Style 7:    R881212345
  • Style 8:    123045667890M151234
  • Style 9:    YA123456
  • Style 10:    1602393269

Style 1:    A000129 with MFG. DATE 2008-1

The date of manufacture is coded in the MFG DATE and represents the year and month of manufacture.
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Style 2:    FBOU0905048200

The date of manufacture is coded in the 5th thru 8th digits of the serial number and represents the year and month of manufacture.
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Style 3:    20444501000138

The date of manufacture is coded in the 1st six digits of the serial number and represents the year and week of manufacture.
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Style 4:    049270032

The date of manufacture is coded in the 3rd thru 5th digits of the serial number and represents the year and week of manufacture.
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Style 5:    55A1234501

The date of manufacture is coded in the 2nd & 3rd digits of the serial number and represents the year and month of manufacture.

This style of serial number was used during the period of 1995 thru 1999.

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Style 6:    5PB1234503

The date of manufacture is coded in the 2nd & 3rd digits of the serial number and represents the year and month of manufacture.

This style of serial number was used during the period of 1971 thru 1994.

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Style 7:    R881212345

The date of manufacture is coded in the 2nd thru 5th digits of the serial number and represents the year and week of manufacture.
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Style 8:    123045667890M151234

The date of manufacture is coded in the 11th thru 13th digits (the only letter in the serial number followed by two numerical digits) of the serial number and represents the year and week of manufacture.
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Style 9:    YA123456

The date of manufacture is coded in the 1st two letter digits of the serial number and represents the year and month of manufacture.

This style of serial number was used during the period of 1964 thru 1970.

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Style 10:    1602393269

The date of manufacture is coded in the 1st thru 4th digits of the serial number and represents the year and month of manufacture.
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Brand History:

  • Early 1900's - Started as McQuay Radiator in Minneapolis, MN and manufactured radiators for the Ford Model-T.
  • 1933Incorporated as McQuay Inc. and initial HVAC success was built on the first classroom unit ventilator and the first hermetic compressor for air conditioning use.
  • 1941-1945 - McQuay manufacturing facilities were converted to support the U.S. war effort. McQuay designed and manufactured self-sealing fuel tanks and extended bomb release shackles for the Doolittle Tokyo Raider's B-25s.
  • 1946-1950's - McQuay products and sales grew as the demand for commercial air conditioning increased. The U.S. manufacturing facilities were expanded to meet this demand. McQuay quickly became the world's largest supplier of heat transfer coils.
  • 1951 - Created the Packaged Terminal Air Conditioner (PTAC)
  • 1960's - McQuay became a multi-national corporation by beginning overseas sales and licensing operations in Canada, England, Scotland, and Australia.
  • 1965 -McQuay established a new division in Italy, McQuay Europa, to manufacture 50 Hz equipment.
  • 1968 - Daikin Applied Europe is founded from a 50/50 joint venture between McQuay and an Italian partner, the company rapidly grew in the ‘70s, establishing as a European leader in the market.
  • 1970's - McQuay product line grew to include more types of commercial HVAC and large capacity equipment, as air conditioning became viewed more as a requirement than a luxury in buildings of all types.
  • 1971 - Created Dual Centrifugal Compressor Chiller
  • 1980's - McQuay Europa became a wholly owned subsidiary of McQuay International Inc.
  • 1984SnyderGeneral completes 3 major acquisitions to diversify beyond residential and into commercial and refrigeration. The first two acquisitions include Atlantic Richfield's ARCO Comfort Products Co. and the Halstead & Mitchell division of Halstead Industries. The next was a "friendly" takeover of McQuay Inc., though some sources indicate it was a hostile takeover.
  • 1988 - SnyderGeneral acquires American Air Filter (AAF), an air filtration equipment manufacturer now with 27 international production facilities and sales coming from more than 100 countries.
  • 1991 - Economic conditions hinder financial growth of the company. With global economic recession in full swing, SnyderGeneral sets its eyes on international markets to serve as the prime area for growth. SnyderGeneral subsequently sells Comfortmaker and Arcoaire brand lines to Inter-City Products, but retains the McQuay and AAF brands.
  • 1994 - The remainder of SnyderGeneral operations are sold to Hong Leong Group Malaysia, which is partially comprised of O.Y.L. Industries Berhad, a manufacturer of residential and light commercial HVAC equipment. SnyderGeneral is renamed "AAF-Mcquay Incorporated" and divided into two major companies: "AAF International" and "McQuay International". AAF International was based in Louisville, KY and manufactured air filtration products and systems including commercial, industrial, and residential air filters, as well as air pollution control products, machinery filtration, and acoustical systems. McQuay International was based in Minneapolis, MN where it designed, manufactured, marketed, and serviced all HVAC systems and products formerly undertaken by SnyderGeneral (with exception to the Arcoaire and Comfortmaker brands previously sold to Inter-City Products). McQuay International sold its products under various brand names, including Wesper, JennFan, Barry Blower, and AAF (commercial and institutional HVAC equipment).
  • 1995 - Created custom modular commercial air handler
  • 2002 - Created first commercial water-source heat pump using R-410A
  • 2004 - Created frictionless magnetic bearing centrifugal chiller
  • 2006 - McQuay International was acquired by Daikin Industries, a global manufacturer of both commercial and residential air conditioning equipment based in Osaka, Japan.
  • 2010 - McQuay acquired HydroKool LLC of Phoenix, Arizona, a designer and manufacturer of pre-packaged, pre-engineered custom HVAC solutions.
  • 2013 - Daikin dropped the McQuay name, ending 80 years of business for the name. European operations changed its name to Daikin Applied Europe.
Page last updated: 08/04/2023