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2. Draught excluder - Wikipedia

   en.wikipedia.org/wiki/Draught_excluder

   A door draught excluder is placed at the bottom of a door to cover the gap located at the threshold. [1] [2] In the Victorian era these draught excluders would be sausage-shaped and made from fabric stuffed with sawdust. [3] Tubular sand-filled fabric draught excluders are commonly referred to as "door snakes" in Australia.

3. Stack effect - Wikipedia

   en.wikipedia.org/wiki/Stack_effect

   The stack effect or chimney effect is the movement of air into and out of buildings through unsealed openings, chimneys, flue-gas stacks, or other purposefully designed openings or containers, resulting from air buoyancy. Buoyancy occurs due to a difference in indoor-to-outdoor air density resulting from temperature and moisture differences ...

4. Register (air and heating) - Wikipedia

   en.wikipedia.org/wiki/Register_(air_and_heating)

   During winter months, for example, an air conditioning register can be closed to prevent cold air from being pulled from the room. This allows the hot air to mix more completely with the cold air in the room, improving the efficiency of the HVAC system. [7] (The return should be efficient enough to draw off the cooler air.) [10] [11]

5. Draft Dodgers: Cheap and Easy Ways to Keep Winter's ... - AOL

   www.aol.com/draft-dodgers-cheap-easy-ways...

   This kit promises "quick and easy installation" and is designed to save energy, reduce heating costs, reduce condensation, and prevent frost buildup. One kit will cover two 3-by-5 foot indoor windows.

6. Cowl (chimney) - Wikipedia

   en.wikipedia.org/wiki/Cowl_(chimney)

   Cowls often also act as a rain guard to keep rain from going down the chimney. A metal wire mesh is sometimes added as a spark arrestor. Wooden cowls were used on oasts to prevent the ingress of rain into kilns, and create a flow of air through the kiln. An H-style cap (cowl) is a chimney top constructed from chimney pipes shaped like the letter H.

7. Damper (flow) - Wikipedia

   en.wikipedia.org/wiki/Damper_(flow)

   A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control - for example, in the case of ...