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1. a CFL on there own reduce electricity use by around 75 percent depending on the bulb itself but the effectiveness of the bulb is cut by about 25 percent by being on dimmer switches and tend to burn out a lot faster than normal bulbs.
(edit: as valhallas_end said it is not a good idea at all to put CFLs on a dimmer only bad things happen like burning the bulb out or hitting the breaker.)
2. similar to dimmer switches, electronic timers tend to cut the life of the bulb as well.
3. for those lights you use the most often or you want to leave on for long periods of time LED light bulbs are a great alternative to the normal incandescent and the even the CFLs. plus LED bulbs last a lot longer than normal light bulbs.
4. in the theme of not leaving lights on motion sensor lights are the best, they turn on only when you pass and turn off seconds after you have left, little to no energy wasted.
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Yes, the USA with such a large amount of land has grown around cars - it does make life difficult when you can't walk to the shop.
But if it's hot enough for AC, you'd think clothes could dry outside on a line, or is it quite humid too? I use the line when it's not raining... I don't have AC, but it seems that Chicago can get quite hot - you must be glad of it.
L
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L