Energy Star Program


Shew’s Top Quality understands that smart choices can reduce energy bills and conserve energy. That’s why every Shew’s Top Quality window and door either qualifies or can be ordered to meet ENERGY STAR guidelines. Meeting the U.S. Department of Energy’s strict criteria, ENERGY STAR qualified windows and doors save energy and money, increase the comfort of your home and protect your valuable possessions from sun damage.
What is the ENERGY STAR Program?
ENERGY STAR is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy helping us all save money and protect the environment through energy-efficient products and practices—including windows and patio doors.
With the help of ENERGY STAR, Americans have saved enough energy in 2006 alone to avoid greenhouse gas emissions equivalent to those from 25 million cars — all while saving $14 billion on their utility bills. And with studies showing that over 40% of a typical home’s annual energy budget consumed by windows and doors, ENERGY STAR labeled windows and doors are one of the most effective tools in conserving energy and reducing heating and cooling costs.
What Window And Door Features Are Recognized By ENERGY STAR?
For windows and doors, ENERGY STAR guidelines assess the U-factor and the Solar Heat Gain Coefficient (SHGC).
  • The U-factor is commonly described as the amount of heat transferred through a material. The lower the U-factor, the slower the rate of heat flow and the better the insulating quality.
  • The SHGC refers to the amount of heat from the sun that windows and doors allow into the home. The lower the number, the greater the ability to reduce the amount of heat absorbed into the home.
Are ENERGY STAR Guidelines The Same Across The Country?

Because the United States covers such a large area, ENERGY STAR guidelines have been tailored to meet specific climate considerations in four regions of the country. This four-zone ENERGY STAR system has increased its requirements to obtain improved energy performance in many parts of the country.
What Factors Can Affect An ENERGY STAR Qualification?

Several product features can improve a window or door’s ability to meet ENERGY STAR guidelines. Features such as low emissivity glass, the size of the air space inside the insulating glass unit and the type of frame and sash material are just a few product attributes that can alter how well a window or door meets the established ENERGY STAR guidelines in a specific area of the country.
Simonton products are designed and can be tailored for maximum efficiency in all climates.
Regional Guidelines
To be labeled as an ENERGY STAR product, the U-factor and SHGC (Solar Heat Gain Coefficient) ratings must be less than or equal to those established by ENERGY STAR.

Learn more about the ENERGY STAR program visit their website at