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# does leaving a closet light on all night drastically effect the power bill?

my husband and i were having a little debate last night.. lately our 1 year old is fascinated by the night light in our 4 year old's room. no matter how many times we re-direct or say no she just cant seem to leave it alone. so ive resorted to leaving my 4 year old's closet light on, with the closet a little open, as a night light. she needs the light so she can see her way to the door if she has to go to the bathroom.

anyway, hubby went in there and did his nightly checks and turned it off. we are trying to save money, and trying to save energy as well to save money on our bill. he argues that leaving it on all night has a huge effect on the bill, which i highly disagree with. other than the night light in the younger girl's room (which my 1 year old seemingly does not care to mess with), the one in their bathroom, those are the only lights running all night.

and this is coming from the man who lets the heat run all night but leaves our bedroom window open. now that, is a huge energy waster. especially since the heat must run longer now to make up for the window being open and letting cold air in. he does not agree that that makes a big difference, though.

Asked by tnm786 at 11:37 AM on Jan. 24, 2011 in Money & Work

Level 43 (159,608 Credits)
• Found this online so you can look at the wattage of the bulb and figure out the daily costs:
A 60 watt light bulb uses 60 watts of power in a period of one hour or 60 watts in one minute or 60 watts in one second or 60 watts during any period of time.
How much total energy a 60 watt light bulb "consumes", which is the amount of electricity that has to be paid-for, is measured in watt•hours (that's watts times hours). So a 60 watt bulb consumes 60 watt•hours in one hour, or 60 Wh x 24 hr/day = 1440 Wh per day.

That is the same as 1.44 kilowatt•hours (kWh), so, if you look up what your electricity supplier charges for 1 kWh you can figure out how much it would cost you in money. If 1 kWh costs you 25 cents, then leaving a 60 watt light bulb switched on for 24 hours straight would cost you 1.44 kWh x 25¢/kWh = 36 cents.

Answer by Mom2Jack04 at 12:56 PM on Jan. 24, 2011

• Use the energy efficient bulbs and it will cost next to nothing on your bill.

Answer by bugfin at 11:42 AM on Jan. 24, 2011

• Over a long period of time, yes it does. Just like leaving appliances plugged in even when they are not on. Phone chargers pull current even when the phone isn't connected to it...