Select your state

Newsroom

Subscribe to our news releases


U-Values and STC Ratings for MI EnergyCore Energy Efficient Windows

MI Windows and Doors, one of America’s leading window and door manufacturers, has released test results including U-Values and STC Ratings for its new MI EnergyCore™ Window System on its website at mienergycore.com.

The MI EnergyCore Window System is designed for optimal energy efficiency and high performance without compromising style and functionality.  The system’s high performance is derived from a combination of patented AirCell™ PVC frame technology, TMAX™ Insulating Glass, and a design that incorporates numerous physical barriers against air and water infiltration. The thoughtful design of the MI EnergyCore Series results in products that are substantially more energy efficient, stronger, more secure and quieter. 

The line provides a complete, cost-effective family of products to meet the next phase of ENERGY STAR requirements and qualify for the Department of Energy’s High Performance Windows Program (R-5). "Most high performance window systems offered today involve complicated exceptions. For example, some styles meet the grade while other styles or configurations do not. MI EnergyCore is designed to meet the grade in any style or any configuration. Therefore, homeowners do not need to sacrifice style or aesthetic upgrades to gain performance," states Mike DeSoto, President of MI's Western division.

The frame is manufactured with a patented AirCell PVC material that is co-extruded and thermally bonded.  This creates a fully insulating, corner-welded frame that results in superior energy efficiency and strength. The frame also incorporates oversized balance pockets and optimally placed internal webbing to handle the weight of 1 1/8" OA triple pane insulating glass across the entire size catalog, and with any grid or glass combination including tempered and laminate glass.  The primary purpose of these design features are to support the weight and optimum IG (Insulated Glass) thickness of triple pane glass.  These same features allow the system to be glazed with laminate or dual laminate glass without compromising thermal performance or grid options.  Furthermore, the MI EnergyCore design maintains air infiltration at less than .015 cfm/ft2 (half the certification limit of .30 cfm / ft2).   Air Infiltration resistance and sound control are strongly correlated.  

MI EnergyCore standard TMAX glass package is offered with two laminate glass upgrade options:  TMAX SQS™ (Safety, Quiet and Solar Control) and TMAX STC™.  The laminate glass used in both packages incorporates a .030” thick PVB interlayer that is specifically designed to block sound transmission.   TMAX SQS includes a single piece of laminate glass on the interior pane and achieves STC numbers in the mid thirties across the entire product line.  TMAX STC is an 1 1/8” OA panel with laminate glass on both the interior and exterior pane.  TMAX STC has been certified with STC values between 38-41 across the entire product line.  These values equate to a window that is approximately 50% quieter than the typical dual pane window and makes MI EnergyCore one of the most effective and practical sound control windows on the market.  Most noise reduction window solutions can only achieve this level of noise reduction with bulky and costly 4 pane systems that limit style and installation options. MI EnergyCore windows with TMAX STC laminated glass are available in all window styles including Tilt Double Hung, Casement, Awning, Picture Window, Slider, and Single Hung windows.

Some selected window configurations:

MI EnergyCore U-Values and STC Ratings Summary Chart

To see a complete chart of the technical specifications:  http://www.mienergycore.com/professionals/tech-specs/

The summaries of the test results are posted here: http://www.mienergycore.com/professionals/test-reports/

Tags: best replacement windows, energy-efficient windows, energycore, MI energycore, MI Windows and Doors, MIWD, noise reduction, replacement windows, sound transmission, STC Ratings, U-Values