Are the stories about wholehouse fan energy savings really true? Does it really consume less energy than an air conditioning unit? A wholehouse fan is indeed energy efficient. It is also cheaper to use than an air conditioning unit because of its design. The system works by pulling hot air out and drawing fresh air in, making it easier to lower the temperature inside the home. It works more quickly than an attic fan! That said, this doesn't mean that once you have installed a wholehouse fan, your energy bill is going to drop right away. You need to know how to use it to your advantage. Here are some wholehouse fan energy saving tips to help you spend less while enjoying its best benefits: Avoid using the fan when it's hot outside Don’t use your whole house fan when the air outside is hotter than the air inside your home. This will defeat the purpose of your wholehouse fan. So, when should you turn it on? The best time to turn it on is during the early morning or at nigh...