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Jun 2017

What is Energy Star? What glass is best for my replacement window?

Buying replacement windows can be a daunting task for homeowners, but take heart, there is OBJECTIVE help available for today’s consumers.

One of the biggest questions homeowner face is what type of level of glass efficiency should I get for my home?

Fortunately Energy Star provides homeowners with a zone by zone breakdown of the United States and the u value and the Solar heat gain co-efficiency they recommend.

As a matter of fact, today’s consumer’s have a wealth of information available to help them make the best decision. Through a combination of government agencies and leading window and door manufacturers, a homeowner today, more so than ever, has the data available to make their custom windows perfect for their home.

As we discussed in previous blogs, there are basically two families of windows:  vinyl and wood clad.  Each has a number of sub-variants but in general vinyl is the most cost effective to increase the energy efficiency of the two, particularly in regards to the glass.

The area of the window that experiences the greatest energy loss is the glass.  The glass is typically 75 to 80 of the window itself and due to the phenomenon of convection, our glass lets heat pass through in the summer and out in the winter.

If your home has dual pane windows that may make you feel like you have energy efficient windows but you may not.  The key to substantial reduction of heat loss and gain is the microscopic layers of silver that are applied to the glass.  This layer of “silver” reduces heat flow by as much as 25%, resulting in up to 15% in reduced annual heating and cooling costs.

Legacy’s Heritage windows features triple pane glass but most importantly they are North zone qualified by Energy Star.

Energy Star: an overview provided by the EPA.

ENERGY STAR is a U.S. Environmental Protection Agency voluntary program that helps businesses and individuals save money and protect our climate through superior energy efficiency.

In 1992, the US Environmental Protection Agency (EPA) introduced ENERGY STAR as a voluntary labeling program designed to identify and promote energy-efficient products to reduce greenhouse gas emissions. Computers and monitors were the first labeled products. Through 1995, EPA expanded the label to additional office equipment products and residential heating and cooling equipment. In 1996, EPA partnered with the US Department of Energy for particular product categories. The ENERGY STAR label is now on major appliances, office equipment, lighting, home electronics, new homes and commercial and industrial buildings and plants.

Through its partnerships with 18,000 private and public sector organizations, ENERGY STAR delivers the technical information and tools that organizations and consumers need to choose energy-efficient solutions and best management practices. ENERGY STAR has successfully delivered energy and cost savings across the country, saving businesses, organizations, and consumers $24 billion in 2012 alone. Over the past two decades, ENERGY STAR has been a driving force behind the more widespread use of such technological innovations as efficient fluorescent lighting, power management systems for office equipment, and low standby energy use.





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