Arizona Mechanical / HVAC Code: IMC 2018

Arizona follows IMC 2018 as the basis for mechanical / hvac work. Permits and inspections are issued by the local Authority Having Jurisdiction (AHJ), which may publish additional amendments.

No statewide plumbing code — adoption is local. Many jurisdictions use the IPC; verify with the AHJ. (Mechanical code typically derives from the plumbing-code family.)