An alert reader (Roberta Lane, Program Officer and Regional Attorney with the Trust's Northeast Field Office), reminded me that there is another great window study out there -- "Measured Winter Performance of Storm Windows," by Joseph Klems. I failed to mention that in a posting last Friday about windows.
Klems -- a researcher with Lawrence Berkeley National Laboratory -- completed the study in 2002. In short, the study finds that low-e storm windows perform "very similarly" to replacement windows. Happy reading.