Why Are New Windows So Energy Efficient?
If you are thinking of having new windows installed in your home, you might be amazed at how much more efficient modern windows are compared to those that were made 20 or 30 years ago. What makes these new windows so efficient? It really comes down to three elements.
Low-E Coatings
Normal glass has a very high emissivity. This means that when heat hits the glass, most of that heat travels right through it.