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Step 1
Determine the amount of BTU that you will need. BTU or British Thermal Unit is the rating used to determine the size of air conditioner that you will need. The more BTU's then the larger room it will cool. It is better to buy an air conditioner that is too large for the room than one that is too small.
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Step 2
Look for an energy star sticker. Most window unit air conditioners will have an energy star sticker if they are made by a reputable company. An energy star appliance will save you a bundle of money over the years.
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Step 3
Compare prices and features. The more features an air conditioner has then the more expensive it is likely to be. However, those features could save you money on energy costs. The best air conditioner should have a timer and energy saver mode at the bare minimum.
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Step 4
Read reviews. Air conditioners are constantly reviewed by companies. Make sure to see what score the air conditioner you are thinking about purchasing received before you purchase it.
