(a) The term of an air conditioning and refrigeration contractor's license is one year.
(b) A license is not transferable.
  (1) License numbers will have the following form: Title/Class/Number/Endorsement code-TACL/A/000000/C.
  (2) Endorsement codes are as follows:
    (A) Environmental Air Conditioning-E;
    (B) Commercial Refrigeration and Process Cooling or Heating-R;
    (C) Combined Endorsements-C.
(c) A holder of a Class B license with the proper endorsement may perform air conditioning and refrigeration work in a building or a complex of buildings having more than one air conditioning or heating unit. The combined cooling capacity of the units may exceed 25 tons and heating capacity may exceed 1.5 million Btu/h, as long as each complete individual unit does not exceed the capacities stated above.
(d) Any contractor who has a Class B license with one or combined endorsements may upgrade an endorsement(s) by passing the Class A examination for that endorsement.
(e) A contractor who has endorsements of different classes will be issued a separate license number for each endorsement. The licenses will have concurrent expiration dates and will be printed on a single document.
(f) A contractor who holds two licenses may have only one endorsement per license. Both licenses must have the same business affiliation and permanent and business addresses.
(g) The insurance requirement for separate licenses may be met with a single policy with limits at least as high as those required for a Class A license. A waiver of insurance for one license automatically applies to both licenses.
(h) Any violation of the law or the rules and regulations resulting in disciplinary action for one license may result in disciplinary action for the other license.

Source Note: The provisions of this §75.22 adopted to be effective July 21, 1999, 24 TexReg 5469; amended to be effective March 7, 2001, 26 TexReg 1833; amended to be effective September 1, 2001, 26 TexReg 6011; amended to be effective March 27, 2002, 27 TexReg 2225; amended to be effective December 1, 2003, 28 TexReg 10465; amended to be effective August 1, 2006, 31 TexReg 5944; amended to be effective April 1, 2011, 36 TexReg 1975; amended to be effective May 1, 2018, 43 TexReg 2401