Energy Efficiency First | Our Energy Efficient Windows in Denver, CO

The Complete Guide to Putting Energy Efficient Windows First in Your Home

When you start thinking about window replacement in Denver, the concept of the investment itself can be a bit stressful. The most significant benefit, however, is the idea of the money you're going to save on your heating and cooling bills. With new, energy efficient windows installed, you aren't going to have to worry about your heater and air conditioner working excessively to keep up the conditions you desire inside your home.

The problem is, trying to decipher what are high-efficiency windows and what just sounds good can be a bit confusing. First of all, rest assured that all the custom windows in Denver that we offer have been certified through Energy Star®. That means that the Andersen and Milgard Windows that you are looking at with our contractor during your FREE in-home consultation are going to pass the strict set of standards that they have put forth to be both energy efficient and environmentally friendly.
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Anderson Replacement Windows in Denver

Andersen Windows and Doors, one of our primary manufacturers, was the first company in the industry to become the ENERGY STAR National Window Partner of the Year when it started back in 1999. They have been a part of the program since the beginning and won the same award for excellence in 2018.
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"Luis and his team of Tony did an excellent job in replacing our windows, first rate work and attention to detail, highly recommend them."

– KAREN KALFAS

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How To Read Energy Efficient Windows

If you have been researching energy efficient replacement windows, you've probably come across the NFRC label. At this point, you aren't exactly sure what all those numbers mean, or what the label is even for. It is the only label that is accepted by the Energy Star® program to start with, and here is a simple guide to figuring it all out:


The most important rule to remember when reviewing your NFRC labels is the lower the number, the better.
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different kinds of energy efficient windows in Denver

U-Factor

U-Factor is a measure of the heat that gets lost out the window. In the Denver, CO area, that number should be a 0.30 or less. When you want extremely high-efficiency windows, try and purchase those with a rating of 0.25 or lower.

Solar Heat Gain Coefficient 

This number is going to be between 0 and 1, and it tells you how much solar radiation gets through the window. In Denver, CO a 0.32 is ideal. The lower the number, the more you're going to save in the summer on air conditioning.

Air Leakage

Your air leakage number is how much air per square foot goes through that particular window during testing. Your goal number here is a 0.1 which is the lowest. A 0.2 is good, and anything at a 0.3 is considered to be average. If you see a 0.4, you should pass.

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