Joined: 15 April 2013
good Lord, is this still going on?
In my experience electricity has always been The Most expensive way to heat anything larger than a sausage ! If you just want comfort whilst occupying a room a fan heater is the best - it heats just the the air which is all you need for personal comfort.
Underfloor heating cooks your feet without removing the frost from your head!
The best is either an open fire with suitable fuel or any other which is vented to a chimney thus constantly circulating fresh air. Beware fan heaters which are fitted with metal-bladed fans; they produce the wrong ions and so, like early car heaters, cause drowsiness.
Speaking personally now that I suffer cold of the deep-seated type I find the best (i.e. most effective and efficient) to be a blanket fitted with a small heater. Remember that it doesn't take all that time for a body to warm a bed and the heat output from such equates to approximately 100 W.