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Article describing utility rates, net metering policies, installation costs, financial incentives, and other info for both consumers who are interested in installing renewable energy systems and for energy justice and clean energy advocates.

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.

Report on a simplified test procedure for combustion safety that is easier to implement and should produce fewer false positives than the previous procedure.

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.

Standard containing requirements for carbon monoxide (CO) detection and warning equipment intended to protect lives by warning occupants of the presence of CO in sufficient time to allow occupants to escape or take other appropriate action.

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...

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.