If you are building a new home or looking to make your home more energy-efficient, you may be thinking about windows. Up to 30% of household energy is lost through windows, and depending on age and maintenance, losses can amount to much more. Energy-efficient windows can be a costly investment, so understanding which windows are suitable for your home is essential and not relatively as easy as one, two, three. Here’s the rundown on energy-efficient window basics. Getting to know…