Ever open your electric bill and do a double take? Nothing about your routine has changed, but the number sure has. Annoying, right? A lot of appliances add to your energy use, but your AC is usually the biggest hog in the house. In hot weather, it's normal for your...

Few things are more frustrating on a hot day than hearing your air conditioner run nonstop while the temperature inside keeps climbing. The system sounds like it's working, air may even be blowing from the vents, but your home just won't cool down. If this is...