In alt.home.repair, on Thu, 23 Nov 2017 20:14:05 GMT, SURV69
m wrote:

replying to Rich, SURV69 wrote:
Evidently, it appears that the real need is in the *distribution of heat*, and
in every case it appears that a space heater on the floor might heat our feet,
but eventually heats the ceiling and at that point might be lost. SO, it
seems that distribution, re-distribution is the most important factor.

You need a heater that makes non-rising heat.

When you invent one of those, you'll be rich.