Whether you live in a part of the world where the mercury is soaring, or where frigid temperatures are settling in for the next few months, there is one thing you can be certain of — you’re going to have to pay more to keep your home comfortable.

Average electricity prices for households and companies soared 29% in Europe between 2005 and 2011. Over the same period electricity prices in the US rose 5% and inched up 1% in Japan.

But there are some things you can do to cut energy costs, however, that go beyond simple things like sealing cracks around windows. New equipment and gadgets are making energy savings easier. And old myths are being debunked. For example, did you know that it is actually more energy efficient to keep doors open between rooms?  Click Play to learn more — in 90 seconds.