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International Mechanical Codes References | HVAC Mechanical Code Overview The following is a general overview of the mechanical code and what it covers for the safe and proper installation of HVAC air conditioning and heating equipment. It is always best to do the job safely and by the book so get the proper permits and have the job inspected. There are also liability issues involved in not obtaining permits and inspections for some mechanical HVAC installations. These books are written and evaluated by recognized professionals with many years of experience in their related disciplines. Many jurisdictions base their laws on codebooks like the International Mechanical Code, Various Residential and Commercial Code Books, Fuel-Gas Code, and the National Electrical Code.
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