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
Paul in Batavia, New York, recommends The Door-to-Door Bookstore (Bookshop|Amazon), a novel by Carston Henn, translated from German by Melody Shaw, which includes a wonderful description of a book with a perfect final paragraph that you nevertheless...
David from Nashville, Tennessee, wonders about a word he’s heard only in that city: gherming. Someone who ghermsmakes a habit of pestering country-music celebrities or acting overly familiar with them in public. Nashville songwriter Marc Alan...