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

2009

Sherman, Max H, and Iain S Walker."Measured Air Distribution Effectiveness for Residential Mechanical Ventilation Systems."ASHRAE HVAC&R Research Journal 15.2 (2009) 211-230.

Walker, Iain S, Max H Sherman, and William W Nazaroff."Ozone Reductions Using Residential Building Envelopes." (2009).

Sherman, Max H, and Iain S Walker."Residential Integrated Ventilation Energy Controller."EISG – PIER report (2009).

2008

Dickerhoff, Darryl J, and Iain S Walker."Evaluation of the Repeatability of the Delta Q Duct Leakage Testing Technique Including Investigation of Robust Analysis Techniques and Estimates of Weather Induced Uncertainty." (2008).

Wray, Craig P, Max H Sherman, Iain S Walker, Darryl J Dickerhoff, and Clifford C Federspiel."Heating, Ventilating, and Air-Conditioning: Recent Advances in Diagnostics and Controls to Improve Air-Handling System Performance."American Institute of Physics, AIP Conference Proceedings 1044 (2008) 149-162.

Sherman, Max H, and Iain S Walker."Air Distribution Effectiveness for Different Mechanical Ventilation Systems."International Journal of Ventilation 6 (2008) 307-314.

Walker, Iain S."Comparing Residential Furnace Blowers for Rating and Installed Performance."ASHRAE Transactions 114 (2008) 187-195.

Sherman, Max H, and Iain S Walker."Energy Impact of Residential Ventilation Standards in California."ASHRAE Journal 114 (2008) 482-493.

Walker, Iain S, and Max H Sherman."Energy implications of meeting ASHRAE Standard 62.2."ASHRAE Transactions 114 (2008) 505-516.

Walker, Iain S, and Darryl J Dickerhoff."Field and Laboratory Evaluation of a New Ramping Techniques for Duct Leakage Testing."ASHRAE Transactions 114 (2008) 494-504.

Walker, Iain S, and Alan K Meier."Residential Thermostats: Comfort Controls in California Homes." (2008).

2007

Meier, Alan K, and Iain S Walker."Emerging Requirements for Residential Thermostats in North America."The Sixth International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings 2007 1 (2007) 899-903.

Sherman, Max H, and Iain S Walker."Energy impact of residential ventilation norms in the United States." (2007).

Walker, Iain S, and Max H Sherman."Humidity Implications for Meeting Residential Ventilation Requirements."Buildings X Conference - Thermal Performance of the Exterior Envelopes of Whole Buildings (2007) Air Tightness II–Practices III–A.

2006

Walker, Iain S."Residential Furnace Blower Performance." (2006).

Walker, Iain S, and Darryl J Dickerhoff."Evaluation of a new ramping technique for duct leakage testing." (2006).

Walker, Iain S, and Max H Sherman."Evaluation of existing technologies for meeting residential ventilation requirements." (2006).

Walker, Iain S, and Max H Sherman."Ventilation requirements in hot, humid climates."15th Symposium on Improving Building Systems in Hot Humid Climates, July 24-26, 2006 Codes, ESL-HH-06/ (2006).

Walker, Iain S, Valerie Claret, and Brian V Smith."Laser sheet light flow visualization for evaluating room air flows at reduced register air flow rates." (2006).

Walker, Iain S, and Jennifer A McWilliams."Homeowner Retrofit Guide." (2006).

Walker, Iain S."Residential Furnace Blower Performance in U.S. Homes."Air Infiltration Review 28 (2006) 3-4.

2005

Walker, Iain S, Tom W Forest, and David J Wilson."An Attic-Interior Infiltration and Interzone Transport Model of a House."Building and Environment 40.5 (2005) 701-718.

McWilliams, Jennifer A, and Iain S Walker."A Systems Approach to Retrofiting Residential HVAC Systems." (2005) 20.

Walker, Iain S, and Max H Sherman."Duct Tape and Sealant Performance."ASHRAE Journal 47 (2005) 34-41.

Walker, Iain S, and James D Lutz."Laboratory Evaluation of Residential Furnace Blower Performance." (2005).