I can not praise this company enough. I was hesitant about buying windows because I did not know what to buy and did not want to get screwed over. Patrick Moore came to our appointment with a smile and was very courteous. He answered all of our questions and many more. We are not getting a 40% energy savings like he discussed. We are seeing 56%!!! This product is incredible and anybody who is serious about investing into their home should buy windows from Penguin. And if you want to have a very wonderful experience, make sure to have Patrick Moore from the Tacoma office come assist you. He is knowledgeable and will get the job done the exact way you want it. All of my friends have now purchased windows from him and he comes to visit us to make sure everything is still okay. This was an A+ and superior window replacement experience.