Well, I only use a 300W Halogen as a reading lamp. I keep the heat in the house turned down to 68 degF. So the reading light not only illuminates my reading, it provides local heat in a small area around me and my recliner. At least in winter this is what I use for reading. In the summer I change lamps to compact Fluorescent rated at 100W equivalent. Plenty of light, and no excess heat
Red