What Makes A Great Window?

What makes a great window, many ask us here at The Window Man of Northern Virginia. There are 6 factors all great windows share: energy efficiency; durability; maintenance free; easy to operate; strong warranty; and reliable, established mfg and installation. There are even Third Party Independent Certifications that help guide you to what the industry considers a great window. Certifications include: AAMA; NFRC; and Energy Star.