Got good news today from my replacement window distributor, saying that the Manufacturer of MI windows and doors has improved it's replacement and new construction window and door line and now they make The MI EnergyCore Window System which is designed for optimal energy efficiency and high performance without compromising style and functionality. I have been installing this windows for over 20 years and never had any issues and now the windows got even better.
The system’s high performance is derived from a combination of patented AirCell PVC frame technology, TMAXInsulating Glass, and a design that incorporates numerous physical barriers against air and water infiltration.
The MI EnergyCore Window System achieves optimal energy efficiency. The frame blocks thermal conductivity at least 6 times better than fiberglass, 4 times better than rigid PVC, and 3 times better than wood.
When combining the MI EnergyCore frame with high-performance, triple-pane, argon-filled TMAX glass packs, the resulting window exceeds ENERGY STAR requirements by 30 - 50 percent and meets the requirements for the Department of Energy’s R-5 High Performance Windows Program.
In fact, MI window system is so efficient, that their standard MI EnergyCore dual pane window, even WITHOUT argon gas fill, exceeds Energy Star requirements in ALL zones, in ANY style, and in ANY configuration.
The MI EnergyCore Window System’s unique design results in a more energy efficient, stronger, more secure, and quieter window with traditional style.