What other benefits are there for replacing my existing windows and doors? New windows give your home a beautiful new look while improving energy efficiency. They add value to your home while cutting down your heating and cooling bills. If you buy high quality, energy-efficient windows and doors, your windows and doors will payback your investment in the savings you will realize with lower heating and cooling bills. Engineered and well-built windows have been proven to lower your energy consumption by 30-40% depending on home or building’s original construction. Contact us if you have more questions about what are the benefits of replacing my existing windows and doors.