The earliest sunrise of the month in Dublin is 5:41 AM on August 1 and the latest sunrise is 51 minutes later at 6:32 AM on August 31. The latest sunset is 9:20 PM on August 1 and the earliest sunset is 1 hour, 4 minutes earlier at 8:16 PM on August 31.
1.2 kWh x $0.25 = $0.30 per hour to run your window air conditioner. At 8 hours a day for 125 days of summer, your window air conditioner will have an annual running cost of $300 a year.
The Cost of Air Conditioning Vs. Fans. According to the article: a good window AC unit runs on 1.2 kilowatts and costs 14 cents an hour to run. a three-ton central air unit (a common cooling system), runs on about 3 kilowatts and costs about 36 cents an hour to run. a good ceiling fan? It draws only 30 watts to run, costing about 1 cent per three hours of use.