It has been a few years since I've had my windows installed by Colorado window source. I am very pleased with the results. Any time I had questions I was able to call and have someone available to come out. I like that you have the one year- 3 time window inspection follow-ups. The initial meeting with the salesman was so pleasant. He took just the right amount of time I needed to understand their products and get what I needed. He had come to my home but we met at their county line location as well which is really convenient. Everyone was very pleasant and helpful. I have a small condo, but no job was too big or too small for them. Some really expensive window companies spend way too much of your time trying to sell you on their features. Colorado window source was affordable and high-quality. Even the guys on the installation staff were super nice and courteous. I have been recommending Colorado Window Source to my neighbors and friends since.