Which windows have the best low-E rating?

These days, more and more people are striving to be more energy efficient. Your windows play a big role in dictating how much energy you use on a daily basis, which is why updating them can be highly advantageous. If you decide to install new windows, selecting ones with a low E-rating is a smart move, since windows treated with a low-E coating are among the most energy efficient. In choosing these windows, you’ll drastically cut costs on your electricity bills, and you’ll be doing your your part to help the environment as well.

What is a low-E coating?
A low emissivity, or low-E, coating, is a thin layer of metallic-oxide which coats the inner surface of some windows. In windows without a low-E coating, heat is transferred through the glass. In contrast, in windows with a low-E coating, heat is reflected back. In short, it makes the window a more effective insulator. This helps regulate the temperature in your home, meaning you won’t need to use air conditioning or heating systems as much and can reduce your energy consumption.

Low-E rating
Since not all low-E coatings provide the same level of energy efficiency, it’s important to have a way to measure the various strength levels offered by each type of low-E coating. That’s where low-E rating comes in.

Determining the rating of a window will help you to choose one that meets your needs. The low-E rating is calculated through:

• The U-Value. This indicates how much heat loss occurs.
• The solar heat gain coefficient. A measurement that points to how much solar radiation is transferred through the window
• The visible transmittance. This demonstrates how much visible light travels through the glass.

The low-E rating is definitely something you should inquire about if you’re looking to install new windows in your Ottawa home.

Windows with low-E ratings
If you want to purchase windows with the best low-E rating, there are specific brands that you should look into. Both Gentek and North Star Windows and Doors carry high quality windows with fantastic low-E ratings.

Update your windows in Ottawa
For high quality window installation or replacement, look no further than Canadian Comfort Windows and Doors in Ottawa. We’re proud to carry windows with low emissivity coatings, which help you cut down on your energy consumption. Contact us to get started on your next renovation project today!