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6 answers

Any lamp no matter how small the wattage costs money to run, when switched off it consumes nothing and costs nothing. The original reason (25+ years ago!) for leaving fluorescent lighting on was that the cost of the replacement lamp was greater than the energy used, and the frequent switching shortened the lamp life considerably. This is no longer valid due to the low cost of lamps and the fact that the lamp life is hardy affected by frequent on-off switching, especially with electronic control gear or starter switches.

2007-10-27 01:53:09 · answer #1 · answered by jayktee96 7 · 2 0

Fluorescent lights are cheaper to run than conventional light bulbs,but why leave it on when not in use,say at night or if leaving the house.

2007-10-27 08:23:56 · answer #2 · answered by woodburner 4 · 1 0

Turn them off. "Myth Busters" (the TV show) did an episode on this very thing, where they tested all types of light bulbs. I don't remember the exact numbers (I'm sure you could Google it and look it up), but fluorescent bulbs only need to be turned off about 20 seconds or so to regain the energy savings that you'd get by leaving them on. Incandescents, LED's, etc. needed less than one second.

2007-10-27 08:25:45 · answer #3 · answered by Anonymous · 3 0

All lights are cheaper to run switched off. Consult the mythbusters. They have done experiments with multiple types of lightbulb

2007-10-27 08:27:43 · answer #4 · answered by High Voltage 3 · 1 0

It is cheaper to switch them off, but if you do it frequently you may find you need to buy a starter sooner than otherwise which might put the overall cost up. So I would say maybe leave it on for short periods but turn off for longer ones, like overnight, or if you're out all day.

See? A straight answer. LOL

2007-10-27 08:40:17 · answer #5 · answered by proud walker 7 · 3 2

Cheaper to leave on.

2007-10-27 08:24:14 · answer #6 · answered by mary s 2 · 0 4

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