Residential Clothes Dryers: A Closer Look at Energy Efficiency Test Procedures and Savings Opportunities Project Manager Noah Horowitz, Senior Scientist Natural Resources Defense Council nhorowitz@nrdc.org Prepared by: David Denkenberger, PhD, Serena Mau, Chris Calwell, and Eric Wanless Ecova 1199 Main Avenue, Suite 242 Durango, CO 81301 Natural Resour. [...] The test procedure should employ a standardized mix of real articles of clothing, or test cloths that are at least equally challenging to dry. 2. [...] The test procedure should use an efficiency metric that appropriately values the amount of source energy it takes to remove a unit of water. This will allow for a direct comparison of the performance and efficiency of gas and electric dryers. 3. [...] Dryers should be allowed to run until they stop automatically in a variety of modes rather than to a predetermined moisture content in “high heat” mode. In our testing we ran the 100% cotton load in “high heat” and “more dry” auto termination mode and the 50/50 load on “medium heat” and “normal dryness” auto termination mode. We also recommend that dryers be tested in “eco mode” where applicab. [...] S. Environmental Protection Agency to NRDC. The views and findings expressed herein are solely those of the authors and do not necessarily reflect those of the EPA. A Further Investigation of Dryer Energy Test Procedures & Savings| November 2011 | Page 10 Background Research Approach The Importance of Measuring Real Clothing Allowing Dryers with an Automatic Shut-off F.