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.
If you assume that your unit is running half of the day during summer months, 1  a window AC unit would cost $50.40 per month. 2  a central AC unit would cost $129.60 per month. 3  each ceiling fan would cost $1.20 per month.