Shawn Ellsworth is a licensed California General Contrator (Lic.# 870132) and is fully insured to perform all energy retrofits on your home. He is also a BPI certified energy professional and is fully qualified to perform a home energy audit and determine what cost-effective measures are available to improve your home’s energy performance and comfort.

Shawn is committed to energy performance and has completed many training programs through PG&E leading to his certification with their Energy Upgrade California program. He is also certified with the CHF Residential Energy Retrofit Program.

Shawn Ellsworth established Comfortable Efficiency in 2010 as the premier building performance contracting company in our area. As lead contractor and field instructor for a project involving Redwood Coast Energy Authority and The Yurok Indian Housing Authority, he taught a team of 10 “Green Jobs Workforce” trainees to perform extensive energy efficient retrofits on eight homes in Humboldt County. This project, and the idea of building energy performance, were featured in the 2011 annual Do It Green publication by The North Coast Journal.

Comfortable Efficiency is committed to the “Building as a System” approach to construction. Shawn is a certified Building Analyst Professional by the Building Performance Institute (BPI) Inc., the nationally recognized authority. He is also a certified Home Energy Rating System (HERS) rater, and remains on the cutting edge of his profession through training and working with some of the foremost authorities in this industry on both residential and commercial projects.


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I want to express our appreciation of you coming out to our home. Assessing the situation regarding increased condensation on the windows in the house, doing a thorough check of the house inside, outside and under.

B & T Bollig