Are energy saving light bulbs energy saving.?

While day-dreaming looking at my lamp on my desk with an energy-saving bulb, i had a thought.

Incandescent light bulbs are so called inefficient; the produce a lot of light, but also a lot of heat.
Fluorescent bulbs produce the same amount of light with less heat, hence less wattage used.

In England, it is quite cold, and most of the year, i have some degree of heating on, so surely having incandescent bulbs that are heating the room would reduce my energy usage in other areas, such as heating. Obviously is you use air-con then they are saving energy, but in a cold country, does it actually save you energy.

Obviously looking at money wise, i think the gas heaters are cheaper to heat than an electrical heater. So it may save you money, but i'm talking in a pure energy sense.
Well i did think this, that a bulb is too small to heat a room. So where does the energy go?

You are quite right. Given that there are serious downsides to using mercury based bulbs this is a valid point that others have raised before you.

One could say that the location of most light bulbs are not placed sensibly as a heat source: many are on the ceiling, and of course heat rises. And one could also say that when you are using light bubs to augment your heating, they are not regulated. They do not stop radiating heat when it gets warm. And these points are indeed valid. But yours is a point worth noting.

I find it rather odd that a much better solution is 'coming of age' quite quickly and that perhaps we should wait for a solution from that direction before doing this massive conversions. I am referring to LED lighting. It does not have a mercury risk, is much MORE efficient, lasts much longer, and involves all together much less material to build.

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