1. (a) Unless licensed under the provisions of the Act, with a license of the class and endorsement appropriate for the work described or advertised, it is unlawful for any person, partnership, firm, or corporation to perform or offer to perform air conditioning and refrigeration contracting or to use a license number that is not assigned to that person, partnership, firm, or corporation.
2. (b) All air conditioning and refrigeration contractor's licenses expire three years after the date issued, renewed, or reissued.
3. (c) A license number that has been relinquished, revoked, or expired shall not be reassigned to any licensee.
4. (d) Endorsement Codes are as follows: Environmental Air Conditioning-E; Commercial Refrigeration & Process Cooling and Heating-R; Combined Endorsements-C. License numbers shall have the following form: Title/Class/Number/Endorsement code-TACL/A/000000/C.
5. (e) A holder of a Class B license may design, install, construct, maintain, service, repair, alter, or modify individual units of 25 tons or less of cooling capacity or 1.5 million Btu/h or less of heating capacity. In a building or a complex of buildings having more than one air conditioning or heating unit, the combined cooling capacity 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.
6. (f) Any contractor who has a Class B license with one or two endorsements may upgrade either endorsement by passing the Class A examination for that endorsement.
7. (g) A contractor who wishes to have endorsements of different classes must have a separate license for each endorsement. The licenses will not have concurrent expiration dates unless both are issued on the same date.
8. (h) A contractor may have only one endorsement per license when he has two licenses. Both licenses must have the same business affiliation and permanent and business addresses.
9. (i) The insurance requirement for separate licenses can 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.
10. (j) 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.
11. (k) Unlicensed persons who operate as general contractors and subcontract work requiring a license under the Act may not bid or contract for a job that consists solely of work requiring a license under the Act unless the person or company has a bona fide employee whose license is assigned to the company. If a general contractor advertises that air conditioning, heating, or commercial refrigeration work is available as part of a job, the ad must state that air conditioning work will be performed by a licensed contractor.
12. (l) Altering a license or ID card in any way is prohibited and is grounds for a sanction and/or penalty.
13. (m) If a licensee contracts with a general contractor or a home warranty company to provide installation or service that requires a license under the Act, the licensee remains responsible for the mechanical integrity of that work.

Source Note:The provisions of this §75.22 adopted to be effective July 21, 1999, 24 TexReg 5469.