Mechanical Codes
Please note that the library cannot help determine which codes apply to your specific project.
The codes adopted by law are published by the International Association of Plumbing and Mechanical Officials (IAPMO), the International Code Council, and the National Fire Protection Association (NFPA).
The publishers of the codes make some editions available for free online — often with some restrictions — but note that it may not always be possible to find an online version of the code as it existed on the date specified by law. In order to view NFPA publications, you must first set up a profile and agree to their licensing restrictions. To view IAPMO documents, you may need to install Adobe Flash Player.
Title 16. Economic Regulation
Chapter 75. Air Conditioning and Refrigeration
Rule §75.100 Technical Requirements
Rule 75.100 allows the contractor to choose between the "applicable version" of the Uniform Mechanical Code and the International Code Council's International Mechanical Code, the International Fuel Gas Code, and the International Energy Conservation Code.
Rule 75.110 adopts the 2018 versions of the above codes. Work permitted or started before January 1, 2021, may be completed in accordance with the 2015 code editions.
Title 16. Economic Regulation
Chapter 75. Air Conditioning and Refrigeration
Rule §75.100 Technical Requirements
Rule 75.100 adopts the International Code Council's International Residential Code for certain residential buildings in municipalities where no code has been adopted.
According to Rule 75.110, the 2015 edition of the IRC shall be used for work permitted or started before January 1, 2021. For work permitted or started after January 1, 2021, the 2018 edition of the IRC has been adopted.
Title 16. Economic Regulation
Chapter 70. Industrialized Housing and Buildings
Rule §70.100 Mandatory Building Codes
Rule 70.100 adopts the 2015 edition of the International Code Council's International Mechanical Code for industrialized and modular buildings:
(a) Effective August 1, 2017, all industrialized housing and buildings, modules, and modular components, shall be constructed in accordance with the codes referenced in subsection (c) - (j).
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(f) The International Mechanical Code, 2015 edition, published by the International Code Council, is adopted as the Mechanical Code of the Texas Industrialized and Buildings Program.
Disclaimer: The library's list of adopted codes is not exhaustive. We include only the adoptions that the library has found relevant as building codes. State laws quoted on this page are not the official versions of the law. See the Texas Constitution and Statutes website.