Windows Professionally Installed for Energy Performance & Comfort

Green Collar Contracting has set the standard for quality and service in the window industry. The windows and doors that we sell are engineered and built to meet the highest standards and specifications in the industry. Our best selling window is currently the Earthwise Eclipse Double Hung Window.  These custom vinyl windows are certified and tested to AAMA and NFRC standards, as well as enjoying a partnership with the Energy Star program. The Energy Star window program is a voluntary partnership between the US Department of Energy and participating window manufacturers. All of our windows using Earthwise E Glass Low E are Energy Star compliant. Earthwise vinyl windows are 40% more efficient than the products required under the most common national building codes. An average household spends over 40% of its annual energy budget on heating and cooling costs. Installing ENERGY STAR windows can reduce those energy bills  by up to 32%.

The Dept of Energy recommends that in the Northern regions a new window must have a U-Value of 0.30 or below.

All of our Double Hung windows have insulating glass with Low-E and Argon gas have a U-Value of 0.30 or lower which is better than the lowest ENERGY STAR requirements.

In choosing Green Collar Contracting as your window installer you can be assured that you have chosen an contractor who knows a thing or two about installing a window.  The truth is, the best window in the world is only as good as the installer is.  That’s why we focus on correct installation procedures through regular training on how to install products properly so they actually will save energy on your heating and cooling costs. You can also be assured that we will fit your lifestyle and budget all while beautifying your home.

All the windows we sell have the following independent ratings/labels.

The NFRC label to insure that they have been independently tested and certified to meet your energy needs and qualify for the ENERGY STAR program.

The National Fenestration Rating Council (NFRC) is a non-profit, public-private organization created by the window, door, and skylight industry. It has established a voluntary national energy performance rating and labeling system. All Earthwise Window’s windows meet NFRC rating guidelines.

The American Architectural Manufacturing Association (AAMA) is a voluntary organization that establishes material performance standards for the window industry. Our windows meet or exceed the AAMA guidelines.

As you can see, our windows and doors meet or exceed demanding rating requirements, providing a lifetime of top-quality, performance and efficiency.


Services include:

  • Replacement Windows
  • Double Hung Windows
  • Casement Windows
  • Sliding Windows
  • Awning Windows
  • Bow Windows
  • Bay Windows
  • Picture Windows
  • New Construction
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Let us know how we can help you with your next window project!

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