If you have to turn them on well in advance of needing them, and then leave them on because next time you want to pop out you need an instant light, then you are probably not saving energy.
I've just been out to chip ice and salt the paths. I'd rather have a decent light before I venture onto an ice rink. So the low-energy bulbs I installed in the balmy days of summer are destined for the bin, and the trusty old incandescents are going back on.
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