Why are "oil filled" or "ceramic" electric heaters better than ordinary ones?
Most are 1500 watts and have a circulating fan -- but so does an ordinary electric heater. Doesn't 1500 watts produce a given amount of heat? The only explanation I can think of is that the oil or ceramic would absorb some heat and release it slowly so heat would circulate by convection and the element and fan would kick in less frequently. Some advertisements, however, claim a saving in energy costs. How could this be?