When it comes to cooling your home, return vents are best installed near the ceiling so they can draw in any hot air that has risen. Supply vents should also be placed high on the wall for better ...

It can cause a problem when you close room doors because the single return vent might not have enough air to pull. Transfer grilles, which are cutouts through the wall covered in grilles ...

Most of these are “supply” vents that push heated or cooled air into the interior of the house, but some will be “return ... wall is covered in wallpaper, you can wallpaper the vent cover.