I am getting “Penguin Windows” installed. Can Anyone tell me about them?

I couldn’t find any customer reviews on Penguin Windows. Can anyone tell me about their pros and cons of the company, warranty, and products?

their windows are great. the installation is very professional and we have noticed a significant drop in our heating costs over this last winter. when we lost power for 5 days our house never dropped below 60 degrees. our bills are at least half of what they had been. the summers are really nice too, no need for fans or a/c. though they are not the cheapest window on the market, you definitely get what you pay for. really satisfied customer here.

Windows 7 Review and Installation Walkthrough