Prepare for hot weather with these Summer Energy-Saving Tips to help keep your electric bills under control when temperatures soar. Set your thermostat at 78 degrees or higher in the summer and 68 degrees or lower in the winter. Use a ceiling fan to circulate air down in the summer months to make you feel cooler. Check out our Space Heater Calculator to estimate the cost of supplemental heat during cold winter months. Get your heating and air conditioning unit serviced every year including a check on refrigerant levels, the compressor, hoses, ductwork and thermostat. Clean or replace air filters regularly. Invest in a programmable thermostat. Make sure your thermostat is not located near lamps or electronic appliances which put off heat and can make your air conditioner run longer. Use our Heat Pump Calculator to consider the savings potential of replacing your old unit with a new high efficiency system. Find out how much energy the appliances in your home use with our Appliance Calculator.

Plan what you need inside the refrigerator before you open the door. Set your fridge at 40 degrees. Let food cool before putting it in the refrigerator. Hot foods will raise the temperature in the fridge and make it work harder. Consider cooking outside on a grill during summer months. Using an oven makes your home hotter. Wash full loads of clothes and use cold water when possible. Don’t run the dishwasher unless it’s completely full. Purchase Energy Star certified appliances and electronics. Use our TV Calculator to compare energy costs. Find and reduce phantom load around your home.There are ways to keep cool without turning on your air conditioner, but when the summer temperatures start busting the 90 (or 100!) degree mark daily, or the humidity makes it feel like you're swimming through a bowl of soup, sometimes air conditioning is a must. Stay cool and save money with these energy saving tips: 1. Keep the AC Lower at Night: During the night you don't require the same level of conscious cool.

Try turning your AC down (so it is running less) during your sleep hours or, if your unit has one, utilize the "sleep mode" which lowers the output on a timer. 2. Use Window or Portable Units: If you aren't into cooling your whole home, try using a portable unit to cool just the area you'll be working in. They use up to 50% less energy than a larger central air unit would to cool off the same space.window ac units energy star 3. Close Off Vents: The basement is traditionally the coolest room in the home, so try closing all the vents in the lower portion of your home. replace ac unit fanThe cool air will slink down there naturally and by closing those vents, you're forcing all the air up top first, cooling as it comes down.central ac unit freezing over

4. Service Your Unit: Some basic maintenance might be all your air conditioner needs, but most will greatly benefit from a good hosing out, especially if you're plagued with pesky trees like Cottonwoods that drop seeds which stick to the filters and make the unit work harder! 5. Check Your Ducts: Making sure the areas where your ducts run through parts of your home without air conditioning (like the attic) are properly insulated will keep the air coming in as cool as it can be. Paying for half cool air isn't anyone's idea of money well spent! 6. Rearrange Your Furniture: Furniture that obstructs air conditioning vents means you could be cooling the back of a chair or the bottom side of your sofa and although it might appreciate the thought, we're pretty sure you'd rather have that chill for yourself instead. There are plastic pieces you can buy for your vents to help force air in the right direction, but the easiest way is to just rearrange your furniture, even if only temporarily.

7. Try 78 Degrees: 78 degrees is a good point for an air conditioner to run at its optimal performance level. Think of it as a car on cruise control headed across the flat Midwest prairie. It's not chugging along going uphill, it's just plugging away, steady as she goes. 8. Lighting: Turning lights off can help reduce your heat, but paying attention to how much light you let in from open windows can also play a significant role. Although it might seem neurotic to open and close your windows every day with the changing of the sun, it makes a huge difference in how much heat your a.c. is competing against. 9. Is Anyone Home?: If you can, while you're away turn your AC up to 85 and make sure the windows and drapes are closed. Although it will be hot for a few minutes when you come home, the blinds will help keep the sun out (allowing existing cool to stay that way for as long as possible) and the heat won't be so substantial that your unit will have to work overtime to cool the room back off.

10. Don't Forget The Fan: We rely on air conditioners to keep things cool, but having the help of a few supplemental fans doesn't hurt. Using them to circulate the cool air means you don't need quite as much pumped into the room. They use less energy than your air conditioner unit, so having them around as backup is a great idea. Do you have another tip to add? Let us know below!Though we're technically still in the season of spring, June is off to a hot start in many parts of the country, and that means one thing for millions of sweltering people: air conditioning. And while we may take air conditioning for granted, it's generally an expensive luxury. Americans spend more than $22 billion a year on electricity to cool their homes with air conditioning — and use a whopping 183 billion kilowatt-hours, according to recent statistics from the U.S. Department of Energy. That accounts for at least 15% of all energy used in some homes, and in warmer climates can represent up to 70% of a summer electric bill.

If you're shopping for a new air conditioner, you'll notice quite a few different sizes and models. But one thing's for sure: Savings are always chill. Here's a quick primer to staying cool and keeping your wallet from overheating when picking out an A/C unit.What's a BTU and How Many Do I Need?Chances are you already know that BTU stands for British Thermal Unit, and that the more BTUs an air conditioner cranks out, the stronger its cooling power. But here's the problem: Most American consumers aren't sure how to translate BTUs into the square footage of a room. (No disrespect to the Brits, but maybe we need an American Thermal Unit, where 1 AMU corresponds to 1 square foot.)Lobbying for the AMU aside, you don't have to guess how much BTU power you'll need to cool your space. Instead, download this Energy Star document and turn to page three. There you'll find a handy chart that simply correlates the area you want to cool into BTUs per hour. So for example, an air conditioner with a rating of 8,000 BTUs can cool a room that's 300 to 350 sq. ft., aka one that measures about 18 ft. x 18 ft.

Of course, you still have to measure your room, but we trust you can work a tape measure and apply this formula: Area equals length times width. For irregularly sized rooms, you can always estimate.Air Conditioner + Ceiling Fan = SavingsIt's one thing to run an air conditioner in your room. But combine its power with a simple ceiling fan, and you can have the best of both worlds. Costing less than a penny an hour to run, ceiling fans have an immediate impact on your domestic comfort once you buy and install them. They generally start at about $40 a piece, but we found this Harbor Breeze 42" Armitage White Ceiling Fan with Light Kit ($24.98 with in-store pickup, a low by $35), which is among the least expensive 42" ceiling fans we've seen. The nice thing about a ceiling fan is that it can make you feel anywhere from 3 to 8 degrees cooler.Calculate Yearly A/C Costs Before You BuyNowadays, nearly all air conditioners come with one of those bright yellow Energy Guide stickers on the box that tells you exactly how much that unit will cost to run.

Take this expense into account, as that's part of your total cost for both buying and operating the unit. Most folks think bigger is always better, but that's not so: "Air conditioners remove both heat and humidity from the air. If the unit is too large, it will cool the room quickly, but only remove some of the humidity. This leaves the room with a damp, clammy feeling. A properly sized unit will remove humidity effectively as it cools."Why a New Window Unit Could Pay for ItselfIf your air conditioner is more than 10 years old, you should seriously consider replacing it. Many new Energy Star air conditioners are so efficient that they use about 10% less energy than one without that designation, according to U.S. Department of Energy estimates. Depending on how long you hold onto the new unit, you could save $60 or more over its lifetime in energy costs alone — a de facto rebate just for upgrading to an Energy Star model.The key number to look for is the Energy Efficiency Rating (or EER): The higher the EER, the more efficient the unit.

So if you replace an old EER 5 unit with a new EER 10 unit, you'll cut your cooling costs in half. You should also look for the "Energy Star" and "Energy Guide" labels when purchasing a window unit. An energy-efficient unit will cycle the compressor on and off so that it doesn't operate continuously. And Energy Star central air units are on average 14% more efficient than standard models. Speaking of which ...The Great Central Air DebateIf you're thinking about upgrading to central air, it's easy to beat yourself up for being an energy hog, or to get intimidated by the sticker price. Yes, it's true that central units will use a lot more power than, say, a single window unit on each floor of a 2-story dwelling. But if you have more than two rooms to cool, then your best bet is to go with a central unit, which also provides long term resale value for a home. Well-designed central systems also win out in terms of being able to filter the air for allergens and pollutants, and for controlling humidity.

Again, keep in mind that window A/C units aren't necessarily more energy-efficient than central air units. A window unit that is too small to cool a room may run continuously, wasting energy. When shopping for a central air conditioning system, make sure the SEER number (seasonal energy efficiency ratio) is 13 or better (14 in warmer climates). A less efficient system will cost you more to run.Help Your New Air Conditioner Do Its Job More EfficientlyIt's easy to think that buying a new air conditioner or two will solve all of your summer cooling problems. But your AC could use a little help. With central units, for example, a programmable timer or thermostat can save you about $180 every year in energy costs by regulating the temperature when you're out of the house, and by turning on only when you return home.With window units, air filters get dirty ... fast. Clean your AC filter at least every month, as a dirty filter makes your AC work harder and use more electricity. Regardless of the type or age of the unit, you should change your filters after every 90 days of use.

What's more, you'll use less energy cooling down a room by keeping direct sunlight out during the day: Sunlight can raise room temperature by 10 to 20 degrees. The less heat that gets into your home, the less you have to pay to remove it. It just so happens that drapes block sunlight and heat better than blinds.We've got an ever-updated list of air conditioning deals for you to peruse and compare. This time of year, sales are as plentiful as backyard barbecues. Certainly one of the worst things to do is feel a heat wave hit you in the face, rush to the first store you can find, and buy the first unit you see. Chill out, if you will, and do some comparison shopping, checking out multiple units for price, efficiency, reliability, and features. The Keystone 6,000 BTU Energy Star Window Air Conditioner ($179.99 with free shipping, a low by $12) features three cooling speeds, three fan speeds, a programmable 24-hour on / off timer, energy and sleep modes, adjustable air flow, slide-out mesh filter, and a remote control.