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Updated wildfire risk assessment, community impacts, and building science measures following the disastrous 2020 wildfire season in the western U.S.

2009 edition of code establishing minimum regulations for mechanical systems, including heating, cooling, ventilation, exhaust, ducts, fireplaces, combustion and hydronic systems, using prescriptive and performance-related provisions.

2015 edition of code establishing a baseline for the design and installation of fuel gas systems and gas fired appliances through performance requirements.

2018 edition of code establishing a baseline for the design and installation of fuel gas systems and gas fired appliances through performance requirements.

This Standard establishes the minimum requirements to evaluate a residence with regards to energy efficiency, water conservation, occupant comfort, and indoor air quality.

This report is designed to meet ASHRAE 62.2-2010/2013 and ANSI/ACCA’s 5 QI-2015 protocol, thereby improving the performance of HVAC equipment in new homes when compared to homes built to minimum code.

2009 edition of code establishing regulations involving life and property safety from fires and explosion hazards, including emergency planning, fire department access and water supply, automatic sprinkler systems, fire alarms, and hazardous materials planning and storage.

2012 edition of code establishing regulations involving life and property safety from fires and explosion hazards, including emergency planning, fire department access and water supply, automatic sprinkler systems, fire alarms, and hazardous materials planning and storage.

2015 edition of code establishing regulations involving life and property safety from fires and explosion hazards, including emergency planning, fire department access and water supply, automatic sprinkler systems, fire alarms, and hazardous materials planning and storage.

2018 edition of code establishing regulations involving life and property safety from fires and explosion hazards, including emergency planning, fire department access and water supply, automatic sprinkler systems, fire alarms, and hazardous materials planning and storage.

Webpage describing burn bans, which wood burning devices are legal in Washington, why wood smoke is harmful to health, and how to reduce the smoke from your wood burning device.

This directory contains the I=B=R Ratings for cast-iron, steel, aluminum and copper boilers, baseboard and finned tube radiation, indirect-fired water heaters, effective as of the date of this publication.

Standard covering requirements for the assembly, installation, maintenance, and operation of controls and safety devices on automatically operated boilers directly fired with gas, oil, gas-oil, or electricity, having fuel input ratings under 12,500,000 Btu/hr.

Standard covering provisions for electrically operated single- and multiple-station carbon monoxide (CO) alarming devices used in various types of residential occupancies to protect against acute effects of exposure to CO. This version of the standard, originally published in 2001 and revised in...

Standard covering provisions for electrically operated single- and multiple-station carbon monoxide (CO) alarming devices used in various types of residential occupancies to protect against acute effects of exposure to CO. This version of the standard, originally published in 2017 and revised in...