Return Air Ceiling Vent Installation – HVAC Ductwork Setup 🔧 In this video, we install a metal return air vent boot in the ceiling. This part lets the air go back into the HVAC system so it can be cooled or heated again. It’s different from a supply vent, which blows air into the room — the return vent pulls air out of the room 🛋️ The technician cuts a hole in the ceiling, sets the metal boot in place, and builds a small wood frame to hold it tight A good return vent setup helps your system ru