The Seattle Mechanical Code regulates design and installation of mechanical systems, appliances, appliance venting, duct and ventilation systems, combustion air provisions, hydronic systems, and solar systems. Seattle has adopted the 2012 International Mechanical Code, with amendments specific to our jurisdiction.
This code does not cover regulations for fuel gas appliances and systems. Fuel gas includes natural, liquid petroleum, and manufactured gases. Those appliances and systems are regulated by the Seattle Fuel Gas Code.
This is a read-only version of the 2012 Seattle Mechanical Code. You can buy a full version from iccsafe.org.
City Council approved our proposed 2014 Seattle Mechanical Code on Monday, October 20. Our proposed changes will likely take effect on November 23.