Under-the-couch-vent-deflector, under the couch vent deflector. like that vent deflector under the couch, or just have the couch spaced out just enough (4 inches?) to allow that now-vertical air. this design redirects the air flow in central forced-air systems for optimal heating and cooling.. V under the couch vent deflector v unfinished hardwood underneath two layers of linoleum v umbra prisma frame black v uff shed siding v unique baby shower gifts etsy v under bed storage drawers queen ..., under the couch vent deflector december 5, 2019 amirul m uncategorized without it, the heated air goes into the couch, with it the air is able to warm the room.