Energy Star

In 2010 the U.S. ENERGY STAR qualification criteria for a door system changed. The new criteria eliminates the four climate zone maps that have been used to determine the system qualification performance. Climate zones have been replaced with a nationwide product performance criteria for opaque, less than or equal to 1/2 lite and greater than 1/2 lite qualification criteria. Masonite doors and sidelites use premium polyurethane insulation and multi- pane insulated glass which creates superior insulating properties and lowers heating and cooling bills. Our NFRC certified assembled door units may qualify for ENERGY STAR. Other criteria exists for eligibility in the various programs but use the charts below as a general guideline for which Masonite products qualify. ENERGY STAR criteria is based on the system’s performance as measured by the U-Value and the SHGC (Solar Heat Gain Coefficient).

1 U-Factor: Measures the rate of heat transfer through a product. It considers all elements of an assembly including conductivity, air flow, and glass emissivity. A lower U-Factor indicates a better insulating product.

2 SHGC: (Solar Heat Gain Coefficient) Measures the amount of energy that passes through glass from the sun, creating additional heat.The lower the SHGC, the better it blocks solar heat.

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