The following is a list of key events in the history of Pritchett Controls, Inc.
| Year | Event | ||
| 1987 | Company is founded as Barber-Colman Pritchett, a joint venture with the Barber-Colman Company. |  |
|
| 1988 | Barber-Colman Company is acquired by Siebe plc and is merged with Robertshaw, another Siebe holding, to become Siebe Environmental Controls. |  |
|
| 1998 | Barber-Colman Pritchett absorbs Siebe branch office located in Washington DC. Company changes name to Siebe-Pritchett to reflect its’ representation of the entire Siebe product offering. |  |
|
| 1998 | Siebe-Pritchett extends its’ territorial agreement with Siebe Environmental Controls to include Baltimore, Central Maryland, and Maryland’s Eastern Shore. | ||
| 1999 | Siebe plc merges with BTR plc and becomes Invensys plc. To reflect this name change, Siebe-Pritchett becomes Invensys-Pritchett. |  |
|
| 2000 | Invensys-Pritchett acquires the assets of the Invensys branch office in Rochester, NY. | ||
| 2004 | Invensys-Pritchett adds a Native BACnet DDC solution, manufactured by Reliable Controls, to it expanding list of products and services. |  |
|
| 2005 | Jerry Pritchett acquires Invensys’ equity position in Invensys-Pritchett and the Company becomes Pritchett Controls, Inc. Pritchett Controls remains the exclusive factory-authorized representative for Invensys. |  |
|
| 2005 | Invensys Building Systems is acquired by TAC, a division of Schneider Electric. Network 8000 and I/A Series products are rebranded under the TAC I/A Series brand. |  |
|
| 2006 | Pritchett Controls sells the assets of its’ Rochester, NY office to BCS of Tonawanda, NY. | ||
| 2006 | Pritchett Controls opens a branch office in Salisbury, MD. | ||
| 2007 | Pritchett Controls becomes an employee-owned corporation. |  |
|
| 2008 | Pritchett Controls opens a branch office in Manassas, VA. | ||
| 2009 | TAC changes name and logo to match its’ parent company, Schneider Electric |  |
|
| 2009 | Pritchett Controls launches lighting division and becomes an Authorized Partner of Orion Energy Systems. |  |
|
| 2010 | Pritchett Controls launches Mechanical Service division. | ||
| 2010 | Pritchett Controls acquires an office building at 718 E. Main Street in Salisbury, MD and relocates the Eastern Shore branch office. The new facility is roughly three times the size of the branch office opened in 2006. |  |
|
| 2010 | Pritchett Controls acquires an office building at 9204 Church Street in Manassas, VA and relocates the Northern Virginia office. The new facility is roughly three times the size of the branch office opened in 2008. |  |
|
| 2011 | Pritchett Controls acquires an office building at 6890 Muirkirk Meadows Drive in Beltsville, MD and relocates its’ corporate headquarters. The new facility is roughly double the size of the previous headquarters facility. |  |
|