About Us +
Researchers in the Building Technology & Urban Systems Division (BTUS) at Lawrence Berkeley National Laboratory develop data and technologies that increase energy efficiency and improve the health, safety and comfort of building occupants, in the United States and worldwide.

We work closely with industry partners, academics and government officials to achieve these goals, and share our research widely
Research +
We are at the forefront of cutting-edge research that redefines building technology and explores all areas of urban systems.

We have been leaders for decades in developing energy-efficient windows, improving indoor air quality, coming up with new ideas to fix the nation's electricity grid, and so much more.

Visit our research areas at the right to find out more.
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Publications +
Enjoy presentations from Building Technology & Urban systems research experts on a wide variety of topics in the areas of building energy efficiency, the electricity grid and how it relates to buildings and much more.
- Presentations
News
Tools & Guides +
Explore our tools, guidebooks and software and download for free.

We offer a variety of technologies designed to simulate and model real-world circumstances to assist in energy-saving programs and help building owners build better buildings. These tools can help calculate performance of building systems like windows and shades, help consumers and builders pick the best windows for a variety of applications and much more.

Publications

Publications By Research Area

2017

Kim, Yang-Seon, Iain S Walker, and William W Delp."Development of a Standard Test Method for Reducing the Uncertainties in Measuring the Capture Efficiency of Range Hoods." (2017).

Walker, Iain S, Yang-Seon Kim, Brett C Singer, and Wanyu R Chan."Assessing Occupant and Outdoor Air Impacts on Indoor Air Quality in New California Homes."AIVC Conference (2017). DOI

Rojas, Gabriel, Iain S Walker, and Brett C Singer."Comparing extracting and recirculating residential kitchen range hoods for the use in high energy efficient housing."AIVC Conference (2017). DOI

Walker, Iain S, Gariel Rojas, Jordan D Clark, and Max H Sherman."Evaluating the Performance of Island Kitchen Range Hoods."AIVC Conference (2017). DOI

Walker, Iain S, Max H Sherman, Jordan D Clark, and Gaelle Guyot."Residential Smart Ventilation: A Review." (2017).

Less, Brennan, and Iain S Walker."Smart Ventilation Controls for Occupancy and Auxiliary Fan Use Across U.S. Climates." (2017).

2016

Singer, Brett C, William W Delp, Douglas R Black, and Iain S Walker."Measured performance of filtration and ventilation systems for fine and ultrafine particles and ozone in an unoccupied modern California house."Indoor Air (2016). DOI

Chan, Wanyu R, Yang-Seon Kim, Brett C Singer, Iain S Walker, and Max H Sherman."Healthy Efficient New Gas Homes (HENGH) Field Study Protocol." (2016).

Walker, Iain S, J Chris Stratton, William W Delp, and Max H Sherman."Development of a Tracer Gas Capture Efficiency Test Method for Residential Kitchen Ventilation." (2016).

Less, Brennan, Iain S Walker, and Sara Ticci."Development of Smart Ventilation Control Algorithms for Humidity Control in High-Performance Homes in Humid U.S. Climates." (2016).

Chan, Wanyu R, Randy L Maddalena, J Chris Stratton, Toshifumi Hotchi, Brett C Singer, Iain S Walker, and Max H Sherman."Healthy Efficient New Gas Homes (HENGH) Pilot Test Results." (2016).

Less, Brennan, and Iain S Walker."Smart Ventilation Control of Indoor Humidity in High Performance Homes in Humid U.S. Climates."ASHRAE (2016).

2015

Turner, William J. N, Iain S Walker, and Jordan Roux."Residential Pre-Cooling: Mechanical Cooling and Air-Side Economizers." (2015).

Logue, Jennifer M, William J. N Turner, Iain S Walker, and Brett C Singer."A simplified model for estimating population-scale energy impacts of building envelope air-tightening and mechanical ventilation retrofits."Journal of Building Performance Simulation 9.1 (2015). DOI

Less, Brennan, and Iain S Walker."Deep Energy Retrofit Guidance for the Building America Solutions Center." (2015).

Chan, Wanyu R, Iain S Walker, and Max H Sherman."Durable Airtightness in Single-Family Dwellings: Field Measurements and Analysis." (2015).

Less, Brennan, Nasim A Mullen, Brett C Singer, and Iain S Walker."Indoor Air Quality in 24 California Residences Designed as High-Performance Homes." (2015). DOI

Walker, Iain S, and J Chris Stratton."Laboratory Evaluation Of Air Flow Measurement Methods For Residential HVAC Returns."ASHRAE Transactions 21, Part 2 (2015).

2014

Turner, William J. N, and Iain S Walker."Energy and IAQ Implications of Residential Ventilation Cooling." (2014).

Walker, Iain S, and J Chris Stratton."Laboratory Evaluation Of Air Flow Measurement Methods For Residential HVAC Returns For New Instrument Standards." (2014).

Less, Brennan, and Iain S Walker."A Meta-Analysis of Single-Family Deep Energy Retrofit Performance in the U.S.." (2014).

Turner, William J. N, Iain S Walker, and Max H Sherman."Advanced Controls for Residential Whole-House Ventilation Systems." (2014).

Walker, Iain S, and Brennan Less."An Assessment of Envelope Measures in Mild Climate Deep Energy Retrofits." (2014).

Walker, Iain S, Brennan Less, and Jeremy Fisher."Deep Energy Retrofit Performance Metric Comparison: Eight California Case Studies." (2014).

Less, Brennan, Iain S Walker, and Yihuan Tang."Development of an Outdoor Temperature-Based Control Algorithm for Residential Mechanical Ventilation Control." (2014).