blower door
n.— «Before any work is done, an assessor is sent to each home to conduct a detailed examination using an infrared camera and what is known as a “blower door”—essentially an airtight door with an inset fan—to locate leaks and hot or cold spots.» —“Big funds for weatherization program” by Nathaniel Zimmer Herald News (Joliet, Illinois) Mar. 21, 2009. (source: Double-Tongued Dictionary)
Further reading
Ever wonder what medieval England looked and sounded like? In Old English, the word hord meant “treasure” and your wordhord was the treasure of words locked up inside you. A delightful new book uses the language of that period to create...
Connie in Santee, California, is curious about a term she read in Isabel Wilkerson’s acclaimed history of the Great Migration out of the Jim Crow South, The Warmth of Other Suns (Bookshop|Amazon). A shotgun house is a narrow house, the width...