I had 14 windows replaced by Colorado Window Source (CWS) in December 2010. Their Amerimax vinyl windows are decent and their pricing was competitive. Delivery was slow and communication was sparse. It was 10 weeks from my deposit to the installation, although they said it would be 4-6 weeks. On the first day of the installation, I told the CWS owner/supervisor "just do a nice job and I'll have you back to do the rest of my house and I'll send my friends to you". It didn't matter. CWS installers butchered the job. It almost could not have been worse. Sloppy, careless, inefficient, oblivious, and unprofessional. Photos, details, and a full experience report available at CWSinstall dot com. It's been about six months since my installation, and I am still finding debris such as screws, saw blade pieces, slivers of glass, and wood scraps on my deck, in my lawn, and on the street where their vehicles were parked. Immediately following the installation, it took about two weeks of my time of patching, sanding, cleaning, texturing, and painting to undo/repair the damage they caused to the interior of my house and to clean-up the mess they made. It will take weeks to repair the exterior when the weather gets better. I would purchase Amerimax windows again, but I'll never use or recommend CWS or their installers. As a long time supporter of local businesses, it's saddening how such a sloppy installation can ruin everything. I was really hoping to recommend CWS to two friends who were waiting to see how my windows turned-out, but I had to emphatically tell them to avoid CWS - and they agreed after seeing my installation. Update 10-July-2011 During last night's rain storm, I discovered that two of the windows leaked due to sloppy/inadequate sealing and caulking. I believe I have fixed the leaks, but now I must repair the soaked drywall and damaged window sill caused by the leaks. Yet another reminder of this nightmare. read more

I have an old house, and that means I have a couple of things done every year and therefore I have a lot of experience with home repair and remodel companies. Colorado Window Source installed four new windows for me today. I am incredibly impressed, and felt their operation is much better than other companies I have dealt with. It started with Scott, the window salesperson, who came by several weeks ago and was very nice and interested in helping me with problems that are unique to my house. He was about five times more organized than a salesman from another company who came the same day. Today, the two installers, Jim and Bill, came. They were as nice as they could be and very competent. I immediately felt like they were old friends. They cleaned up afterwards and rehung my blinds that they had to take down, even though that was not part of the deal. They noticed a problem with two rain gutters on the outside of the house and fixed it too, which saved me from having another worker come to the house. I am totally impressed with the entire operation and I would strongly recommend Colorado Window Source to anyone who needs that sort of work done. read more

We had Colorado Window Source replace all of our 30-year-old tired, not working, ugly windows a couple weeks ago. The result is phenomenal and CWS did a fantastic job. When we were looking for the company we wanted to hire, we did a lot of talking to neighbors who had replaced their windows in the past. It turned out that several of them used CWS and were very happy with their results. Having high recommendations from so many people we knew in our neighborhood made the decision relatively easy for us to make. CWS was patient during the sales process....responding to our questions, providing options and giving suggestions. The ordering and scheduling was flexible and fast. Installation was professional and quick. They were scheduled for 3 days and only took two. We had to do hardly any touchup, etc. except where we already had issues with paint, chipping, etc. before the install. In fact, in a couple places, the window frames are now in better shape than before thanks to the installers attention to detail. Couldn't be happier with the process or results! read more

We bought our place almost 3 years ago now, a 2001 diamond in the rough... it came with a new roof and some windows from a recent strorm and we have been looking to upgrade the siding ever since. After saving up we were ready to choose a Co for the 2018 summer. I interviewed 6 Denver companies. After a long process I happily decided on CWS! They stood out on their customer service (Tisha), quality James Hardie product and competitive price. And after I met and worked with Jose, I was solidly convinced I made the right decision!!! It's a huge risk and investment- do your research...Do yourself a favor and put them on your list for a quote. I can't say enough about the workmanship and professionalism from office to crew. Truly, a special company doing things the right way. Thank you CWS- u made our place so beautiful. Proud to come home now. read more

Bill D. I recently had Colorado Window Source replace all of the 26 windows in my 19 year old Highland Ranch home. I received estimates from four other major companies, and chose CWS's Amerimax line for its balance of quality, price, and warranty. As part of my research, I even made the trip to Loveland to tour the Amerimax factory. The installation, which was done by CWS, was prompt and professional, and the windows are performing beautifully. The thermal advantages are readily apparent in my power bills, and I have been amazed at the degree to which the new windows dampen outside noise. I am also pleased that I no longer have to be concerned about UV damage to my furniture. I believe the project brought me into contact with every one of the CWS office staff, and all were professional, helpful, and friendly. read more

My experience with Colorado Window Source was so positive, I also had them install siding. I didn't want vinyl siding, since neighbors have had hail and wind damage to theirs, but the product CO Window offers is James Hardie fiber cement siding. After researching the product I knew it was the best choice for our Denver environment. The siding is beautiful and brought the look of my house into the 21st century. Everyone I dealt with was professional and efficient and I never felt like I was just another customer. Back to the windows - the report I received from Xcel for the first month that my new ones were installed ranked my heating bill 16% lower than my most efficient neighbors! I couldn't be happier. read more

CWS did some replacement windows for us a few years ago that we are happy with, so this year we had severe hail damage and they replaced our roofs, several windows and repaired siding/flashing on the house and large shed. They and their subs did a great job on all the repairs and were extremely reasonable on cost, but they outdid themselves and all the other contractors on customer service and communication. They always got back to us immediately about any question or problem, were very accommodating to our barn contractors schedule, and solved any problems we had without any runaround or BS. It was a pleasure doing business with them and I will use them in the future as needed. read more

Colorado Window Source just got done putting new James Hardie siding on our home and it is gorgeous! From the start with Scott and Leo it was an easy choice to go this company for our project. The project went smoothly and if any problems happen they were solved in no time! Jose and his crew did a great job on the siding! They were polite and always answered our questions. They all had such a great time working that even my neighbors noticed. We also had them replace a portion of our gutter and downspout! We would highly recommend Colorado Window Source for any siding job you may need!! Thank you for our beautiful home!! read more

I highly recommend Colorado Window Source. We have used them 3 times in replacing most of the windows in our house, including the sliding glass door, and will use them again to replace the remaining ones. We have been very impressed with all aspects of their business. Their salesmen have been upfront with us and the quotes have been very competitive. The windows they installed are excellent and have made a big difference in the heating and cooling of our home. The installation was very professional, and they cleaned everything up when finished. We really like the windows with built-in trim. read more

I really enjoyed working with these guys. They helped me through my hail insurance claim. They reviewed my claim line by line with me to make sure everything was correct. They also worked directly with the insurance company to make sure any discrepancies were taking care of. Once we were ready to start they were in and out and had everything done on schedule. They completed the roof, gutters and painting of the entire exterior in one week. I really couldn't have expected any more from a company. Ask for Chris, he was awesome. read more

I have had my windows from Colorado Window Source for two years. I have been very pleased with the windows and the service that I was provided both at the time of sale, and installation. Yesterday I was cleaning the windows and had a problem with one window not staying open when I finished. I called the store and talked to Teri who was very helpful. When we couldn't troubleshoot together, she said she would send Scott out the next day. At 8:30 the next morning, Scott was here to solve my problem. What great service! read more

i am so pleased with cws. i had all of my windows replaced about 6 years ago. i was instantly amazed at how quiet and warmer (it was the middle of winter) the house felt. i recently had a question about the low e factor on my west facing windows, thanks to a really warm summer. Kurt responded promptly and courteously by scheduling an appointment at my house to personally test my windows. After 6 years, the windows tested at their highest rating possible for that window. Thanks Kurt. read more

All at the same time, this company replaced all my windows with a quality product, put on a new roof and installed all siding with a great product--James Hardie. All of the work was done in a timely manner by very professional crews. The jobs were carefully scrutinized by a company manager on completion. I had no complaints and I was impressed by the fact that follow up inspections were scheduled by the manager. read more

We replaced all the windows in our 25 year old house. We were extremely satisfied with our new windows from Colorado Window Source. They came when they said they would. I was very happy with the installation and they cleaned up all the mess. The windows are great. They have had incredible customer service after the installation. I could not be happier. I highly recommend them. read more