Windows will never be able to provide the kind of energy efficiency you get through insulated walls, but that doesn’t mean you shouldn’t worry about what they can provide. Great windows can help keep your home comfortable and your utility bills lower by controlling the amount of sunlight and heat that comes into your home.
Window types create energy efficiency based on how they’re built and how they’re installed. Great windows aren’t so great when installed poorly because air can seep in and out around the edges of the window frame!
Besides installation, though; there are factors of the window itself that make it more or less energy efficient. For instance, the more panes of glass a window has, the more energy efficient it will be (three panes is one of the highest you can get) because sunlight has to pass through more layers to get into your home.
Also, some energy efficient windows have layers of very specific types of air between the panes that helps slow down the heat transfer.
The reason energy efficiency is important comes down to two things: comfort and energy. When your home is not energy efficient, that means more heat escapes from your house in the winter and comes into your house in the summer, forcing your heating and air conditioning to work harder.
Not only does this reduce the comfort level in your house, making it hard to get it cool or warm enough, it also increases your utility bills as you turn the heater or air conditioning up or down to try to catch up to the energy lost.
Energy efficient windows are just part of the equation, though; and you can actually have professionals come into your home and test your home for energy efficiency if you’re looking at improving it!