How can i find out how much it will cost me to operate a 6000 BTU air conditioner in my home?

Answer 1

The 6000 BTU of an air conditioner is the nominal output capacity. The actual energy draw to operate it will be closer to about 0.7 Killowatt due to the characteristics of the refrigeration process. It is NOT a direct relationship.
This is a very small air conditioner and will not cool a house adequately, but then, where do you live ?
The number of hours of operation will be determined by the use of the rooms, the temperature setting, the climate and the heat loss from the rooms which will depend upon the room location, the windows and the ceiling insulation.
The power company bill will show what they are charging you per Killowhatt-Hour (KwH).

Answer 2

Determine how many hours you're going to run your air conditioner every day.

Convert 6000 BTU to kilowatts (it's 1759 by the way)

Go online or call your power company to find out how much they charge per kilowatt-hour.

Multiply the hours you run your air conditioner by the number of kilowatts to get kilowatt-hours.

Multiply the number of kilowatt-hours by the power company's rate to get how much you pay every day.

Multiply how much you pay every day by 30 to get how much you pay every month.

Answer 3

Start with this:

http://www.energystar.gov/index.cfm?c=roomac.pr_room_ac