On Wed, 13 Nov 2019 17:31:04 -0500, micky
wrote:

In alt.home.repair, on Wed, 13 Nov 2019 15:44:49 -0500, -asop-
wrote:

If you were doing zonal, portable heating of one room in the house, and
you wanted to better retain the heat produced from a small, portable
electric heater, what could you do to the room?

Put a towel against the door at the floor. If the windows are cold
around the edges, caulk. Inside or outside, or maybe both. If the
glass, it will obstruct your viision, but put a vinyl sheet over the
window. DIY or they sell kits which I guess make doing the edges
easier. Maybe some vinyl is clear enough to see pretty well, at least
for the first winter.
Carpet the floor and hang "tapestries" on the walls or reflective
bubble insulation. Make sure the ceiling is insulated - and if a "long
term" situation insulate walls and floor as well