Need Suggestions on Energy Efficient Window Installation

[Nicole01 0]

Hi,

I'm planning to renovate my home. It's been 7 years since I built the home. Now, I want to redesign the drawing room and the master bedroom. It was actually designed by my wife and both of us are not comfortable with the design now. 
The main change we are planning is about the windows in the drawing area and the master bedroom. We have consulted some interior designers for making the final plans. But, we are not sure about installing windows.

In an internet surf, I came across this energy efficient window installation company in Ottawa. Would like to hear your insights about this company. Or else, if you have any other suggestion, please feel free to share it as soon as possible.

Thanks in advance!