As summer sizzles on it can be a challenge to keep the house cool and to get a good night's sleep. The majority of Americans run a fan in their bedroom for better sleep. But how much does that cost? The good news? Not much at all.

According to Homeguides, a contemporary DC fan typically costs less than a penny per hour to run at its highest speed. Even leaving that fan on high for 24 hours per day, 7 days per week, will only cost about $5 per month.

Want to maximize the comfort with an effective cooling effect using a bedroom fan? Set a bowl of ice cubes in front of the fan every night for a makeshift air-conditioner. It really works.

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Here's another interesting fact: For every degree lower you set your air conditioner is another 4% in energy costs. Meaning that if you set your thermostat at 75 degrees instead of 71, you'll save 20% in home cooling costs.

Also, try to keep the curtains closed during the day.

The forecast for Sioux Falls is truly a scorcher. Prepare for 100 degrees on Tuesday, and 102 degrees on Wednesday. Then a cooler pattern follows with a weekend in the mid-80s.

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