I live in an old rental house with 12 foot ceilings and zero ceiling fans. I am trying to conserve as much energy as possible as heating costs are expensive. I have placed plastic on all of my windows and close doors, etc. but I am wanting to do more. My question is this, if I hang items from my ceiling, will that help keep my energy costs down? I am not sure what I would hang but almost like panels of some kind. The intent behind hanging panels from the ceiling is to help keep the heat from rising to ceiling level. My landlord is not likely to install ceiling fans. Would it make a difference even if I don't do a whole complete "drop-down" ceiling? Like, if I hang 2 or 3 panels, will that help in the slightest?
A suspended ceiling at a height of 2.4m is the most efficient way of saving the heating cost. Because right now most of the heat in your home goes up to the high ceiling.
If you don't have access to supplies or dry-wall (gypsum-board), you can hang a lightweight frame of boards of 4cm by 4cm lumber and cover them with plastic.
this photo is a typical suspended ceiling. If you need yu can use the space above for storage.