Janitrol® - GOODMAN® - GmC® - Amana® 

How to determine the date of production/manufacture or age of Goodman Manufacturing® HVAC Brand Systems.

The date of production/manufacture or age of Goodman Manufacturing® brand HVAC equipment can be determined from the serial number located on the data plate.

Parent Company:  Goodman Manufacturing Company, L.P.

Important History Notes:

The Janitrol® brand was acquired by Goodman Manufacturing Co. (now owned by Daikin Industries Ltd. as of 2013) circa 1982 as its entryway into the HVAC market, but has not used the Janitrol brand name since 1992. Goodman marketed the Janitrol® brand as "budget friendly" residential and commercial air conditioners, heat pumps, and furnaces. Goodman® discontinued use of the Janitrol® brand name in 1992.

Pre-1982 history:

In 1927, Surface Combustion Co. Inc. (based in Toledo, OH) introduced the Janitrol brand of home heating and cooling appliances. Janitrol formed the company’s heating and air conditioning division. By 1940, Janitrol had expanded into the aircraft and aerospace industries, providing small, self-contained petroleum and gas-powered heating, de-icing, and other units. By the late 1950s, Janitrol was providing heat-treating equipment for missiles and space launch vehicles as well as military and civilian aircraft, in addition to its aerospace and aircraft heating and cooling units.

In 1959, steel manufacturer Midland-Ross Corporation acquired Surface Combustion, thus Janitrol brand became a division of Midland-Ross.  Midland-Ross later sold the Janitrol division to Laird, Inc. circa 1969; however, the sale did not include the Janitrol Aero division which was retained by Surface Combustion.  Some sources indicate that Janitrol briefly became a division of Tappan in 1977. The Janitrol brand was later sold to Goodman in 1982 (see above).

Example serial number styles/formats found:

  • Style 1:   9704011000 (Mid 1980's on)
  • Style 2:   0759F5616 (Before Mid 1980's)

Style 1:   9704011000

Style 2: 0759F5616


Page last updated: 4/16/2022