You can also hang bamboo shades or tightly woven screens outside your windows.

 This will stop up to 80 percent of the sun's heat from getting through your windows. Invest in a portable air conditioner, instead. If you are using a mini split air conditioner, make sure that the outside compressor is well shaded. Older A/C systems have a SEER (seasonal energy efficiency ratio) of only 6 or 7, while the best air conditioners on the market today offer SEER as high as 13. Modern portable units have a very high energy efficiency rating, so it will cool your room effectively and save you a lot. If your air conditioner is old, consider replacing it with a modern high efficiency unit. A unit that is too small will not cool your room effectively, and an A/C that is too large will consume much more energy than necessary. Keep all windows closed during the day.
Do you know that, in summer, the average American family pays about 40% of their energy bill for air conditioning of the house? But it doesn't have to be this way, Use these simple tips to help you keep your house cool and significantly reduce your energy bills during the hot months. Cooking, drying cloth or dishwashing generates a lot of heat.

Furthermore, excessive energy consumption is not environmentally friendly, so by following our simple advice you could not only save on your bills, but you could also help to reduce pollution in your area. It is best to clean your air conditioner filter at least once a month.

Most people just switch their air conditioners on and set the desired temperature. This will cool your room, of course, but it will cost you, too. If you use central air conditioning, seal all A/C ducts. However, trees and shrubs shouldn't be planted right next to it; it needs some room for air flow. Try to delay these activities until the evening, when it gets cooler. Dust build-ups can significantly reduce air flow. Install mini-blinds or white window shades.

 When buying an air conditioner unit, make sure that it is the right size for your room.

 See recommendations for proper air conditioner sizes for your room.

Mini-blinds can be very effective and can reduce heat gain from direct sunlight by 40-50 percent. If you need to cool only one room, don't use your central air conditioning.

That means that it will consume almost 50% less energy. Insulate China filter presses ducts that run through rooms that don't need cooling, like the basement or the attic. At night you can open them for ventilation and switch on a fan instead of an air conditioner