Brennan Lesshas spent nine years as a building science researcher at Lawrence Berkeley National Laboratory in the Residential Building Systems group and the Indoor Environment group. His current work focuses on state-of-the-art field measurements and simulations of smart ventilation systems, hygrothermal performance of sealed and insulated attics, indoor air quality, deep energy retrofits, zero net energy homes, and the health-energy efficiency nexus. He regularly presents his work at national conferences for the home performance and IAQ industries, and he is the author of over 20 research reports and technical journal articles. Brennan holds a Master of Science in Architecture degree from UC Berkeley – California (2012). He also has extensive experience as a home energy auditor and in residential construction and brings this hands-on approach to his research activities.
Senior Scientific Engineering Associate
Measured Moisture Performance of Sealed and Insulated Attics with Permeable Insulation In California Homes
Efficacy of occupancy-based smart ventilation control strategies in energy-efficient homes in the United States
Energy savings with outdoor temperature-based smart ventilation control strategies in advanced California homes
Sealed and Insulated Attic Hygrothermal Performance in New California Homes Using Vapor and Air Permeable Insulation—Field Study and Simulations
Ventilation and Indoor Air Quality in New California Homes with Gas Appliances and Mechanical Ventilation