Do NOT use Colorado Window Source for your window. It's impressive how bad they are at every aspect of their job. The install was HORRIBLE and ugly, and it took them over a year to do what they said they would do in 6 weeks. First, they gave us an estimate of about 6 weeks for the window install. I give them a deposit, and they essentially disappeared and were impossible to get ahold of. A year later, the windows were still not in. After about a year, we were finally scheduled to get the windows in. But the patio doors that were also to be installed were not ready because they forgot to order them. The patio door took another 2 months to arrive. When they did the install, the quality of their install was jaw dropping ugly and terrible. Their caulking work looked like a 5 year old who used bubble gum. I ended up hiring someone to remove all of the caulking, and re-caulk the windows properly. This was over a week long project and cost about 2k. Do not, under any circumstance, use Colorado Window Source. No wonder why they have such bad reviews. read more

We completely remodeled a house, and Colorado Window Source were the worst contractors we dealt with. They were friendly until we signed a contract and gave them a deposit. The guy who was supposed to measure our windows no showed.. twice. Taking time off work to meet someone who never shows gets old. I understand life happens but I expect communication. It took a month (with me calling often) to finally get the windows measured. Then it took another two months for the windows to show up (and constant follow up calls to make sure the windows were actually ordered). Most were installed fine, but one window was mis-measured by 4 inches! When I asked about the incorrect window measuring, Paulo was rude and unprofessional calling my house "janky" as the reason the window was off by 4 inches. Their solution was for me to hire a handyman to knock out our wall to accommodate their incorrect window size. Ha! Obviously they couldn't install the extra large window they ordered, but they took it with them, claimed they broke it, and said they'd expedite a reorder of the incorrect window. Which makes no sense when the window isn't the correct size! The installers left old windows and junk in my backyard. I've called many times requesting them to pick up the old windows. It's now four months later, I'm not expecting them to pick up their junk. I still haven't received that expedited reorder of the wrong window. I don't expect my money back for a window I never received. I just tell all my friends and other contractors never to work with them. read more

CWS Exteriors - Old windows left in my backyard.. four months ago. - Windows Installation Near Me - Denver, Colorado

DON'T DO IT! You may think it's a good idea, but you'll regret it deeply. AVOID Colorado Window Source with every ounce of your energy. This is one of the worst decisions I've made in my life and I've made some bad decisions throughout. The first meeting will leave you feeling as if you're in good hands but once they have your deposit, game over. You're going to get the worst of humanity once you've given them your money. The installers are sloppy, leave messes, don't clean up after themselves, throw tools on furniture, don't cover anything, and they're unprofessional, disrespectful, and rude. They do not respect homeowners or the home. I wouldn't allow Colorado Window Source anywhere near my house for any reason - not even if it were on fire and they were the only people there to rescue our cats. read more

I recently purchased a very old house (100+ years), and after being in it for only about a month, one of the upstairs windows broke right out of its very, very weathered frame. I contacted several different window companies in the area, and decided to use Colorado Window Source based on my comfort level with the salesperson, Mark, and, of course, the price. Some of the other people who came by quoted a good price, but ran the old trick of trying to force me to sign a contract within 24 hours to get the "deal" - no thanks. CWS's bid was valid for a month. Once I went ahead and made a final decision to go with CWS, I was ready to wait the 4 - 6 weeks they'd originally noted (these windows were an odd size and were specially made). However, they got the whole job done in less than four weeks, which I was really grateful for. Finally, the product itself. I got exactly what I asked for, and the install job looks fantastic. Honestly, I was surprised at how great it looked - I was told that I may have to paint around the edges, but the installer (Jerry) did such a great job matching the caulk that there is barely anything left for me to do. He also climbed out on the roof and picked up the old, broken window (the old windows were painted shut, so I was unable to get it) and disposed of it. I also appreciated that he took the time to show me how they open inward, which will make both sides of the window very, very easy to clean. Love this set! read more

Since posting, Leo reached out with an apology. Covid impacted his ability to respond to our request. I appreciate the gesture of goodwill.

Boy I wish I had gone with another company. The customer service begins great, but if there is any problem with installation or the product they will never fix things properly and their products generally are sub par, so issues will arise. I bought 9 windows and a patio door and Ive been going round and round with them for two years now without resolution. The problems have been going on for so long and they have been so numerous they are overwhelming. They have stood me up so many times Ive lost count. They dont respond to emails, then after repeated emails they finally respond and say they will be out to fix it. Then they cancel. They come to appointments and dont fix anything and say they will come back only to no show and to stand you up again. Then the email cycle starts again.. Rinse, spin, repeat... TWO YEARS. Do yourself a great big favor, save yourself years of headaches and regrets to come, and buy from somewhere else. ANYWHERE else. Working with this company was one of the biggest mistakes I ever made. read more

DO NOT USE THIS COMPANY. I have been dealing with Colorado Window Source for just under a year. My husband and I invested in new windows for our home in August 2021 utilizing the money we received as a wedding gift. Initially the owner of the company was very responsive and sent someone out right away to measure the windows. Due to supply chain issues the windows took longer than expected to arrive (no fault of the company), but they were prompt to get the installation scheduled once they arrived. Two of the windows were incorrectly measured so after installing 4 of the 6 ordered windows, we had to wait an additional 6 weeks for the correct sized windows to be delivered. Once they were installed I quickly noticed that they were the incorrect TYPE of window (we ordered gridless and the ones that were installed had the grid); emailed the owner's wife (whom I've been corresponding with to this point) that they were incorrect. She promptly emailed me back that the correct windows would be ordered and I would be contacted to get them installed. That was in December of 2021. I have been in contact with the company every 2 weeks- 1 month trying to get the correct windows that I have paid for in full delivered/installed in my home. I have received a number of excuses, ranging from the correct windows were never actually re-ordered by the owner's wife to supply chain issues pushing out delivery dates of windows, to "we make new customers a priority so you're order was placed on the back burner". I can understand that the company is at the mercy of the window manufacturer however I am now on my 7th, almost 8th month of trying to get this issue resolved. As of now, I am still getting the run around and am constantly having to be the one to contact them. If you want new windows, spend the money on a company that will make you as a customer a priority. read more

Chris is a great, no pressure salesman. He was patient in explaining the window construction and different options. Amanda was very helpful in scheduling. I am pleased with the quality of Amerimax windows. I am very unhappy with the installation, which was through CWS--so that we wouldn't have warrantee and other problems. They installed a broken window and blamed it on the house settling. How insulting--a 35 year old house is already settled! Windows were not plumb, aligned with each other, and tipped in/out of the house. Installation #2 fixed the broken window in place. Several of my contractors agreed the installation was inconsistent and unprofessional. They charged me to reset the windows--I should know how windows should be set the first time. Three months later, my windows are properly installed. LESSON: Buy from CWS. Do not use their installers. read more

Colorado Window Source Review Our house was built in 1989 in Highlands Ranch buy a large track home builder, Ryland Homes. Because our house was at one point the model home they had put extra windows in our house as an upgraded selling point. Normally, the more windows the better, but realizing that they were cheap construction grade windows with little heat and sound insulation, I started to understand why my heating and cooling bill was so high. Eventually, a large window on the back of our house starting leaking water in everytime there was a heavy rain. I started reading window replacement adds that regularly circulated in the Denver Post at the time knowing that some day I would have to replace my windows. About 8 years ago, Kurt knocked on our front door inquiring about our need for replacement windows. Normally, my policy is to never buy anything from a door to door sales man but he seemed nice enough that I though I should give him a few minutes to finish his sales speech because I was kind of looking for replacement windows. I set up a 30 minute sales meeting for a few days later so I could try to compare some of the other Denver replacement window companies. Back then, Champion Window was doing the most advertising and I researched the qualities needed for a good window. R value is the insulation efficiency and the different construction material like wood, vinyl and aluminum affected cost and future maintenance needs. During the 30 minute in home window demonstration, he shows me an inferred light that was giving off heat like the rays from the sun. He placed the light so it showed through our old windows and you could quickly fell the heat go through like a green house. Then he shined the red light through his replacement windows, I was amazed that you could not feel the heat! The windows had a special coating that reflected almost all the heat from infrared light. This is what heats up your house in the summer. Then he went on to explain that a new stronger re-inforced vinyl construction would also help trap the heat in the winter. These new windows were going to be much better sound barriers for the traffic near our house. After a little haggling and more price-shopping the competition I signed all the paper work and had 23 windows in my house replaced. The installation took about 3 days and of course one window did not fit. They ordered a replacement window and finished the project a few days later. They even added in free binds to help with sunshine in the summer. It has been about 8 years and we are still very happy with the quality of the windows. They have lowered our cooling costs dramatically in the summer months and have lowered our heating bills by about 20% ( could have been more if we had all 27 windows replaced) in the winter. When we close our windows, our house is very quite and comfortable. I have recommended Colorado Window Source to a few friends who used them to replace their windows in Denver. Colorado Window Source sends me a $200 check to say thanks for the referrals. I highly recommend Colorado Window Source to my friends and people that I meet who mention they need replacement windows. If you mention this Yelp, and say "Brian in Highlands Ranch sent you" they may just send me another thank you check! Ha ha ha just joking. read more

We recently had windows installed by the folks at Colorado Window Source. We found them through the recommendation of a friend, and have been very pleased with our choice. We first thought about replacing our windows when somebody from Replacement by Anderson knocked on our door. We were totally turned off by the "salesy" approach he took, and the fact that our quoted price dropped from $50,000 to $37,500 by the time our visit came to a close. Our experience with Colorado Window Source was totally different. My husband connected with Kurt, who spent a good hour on the phone with him, patiently answering his questions about the benefits of one manufacturer versus another. Kurt invited us down to the showroom, where we were able to compare products, and see which worked best for our needs. It was nice to have some options to choose from, and talk with somebody who was knowledgeable about the benefits of one product versus another. And we never got the feeling that he was trying to steer us toward a more expensive product. We ended up paying less than half of what Anderson's lowest quoted price was, to replace all of our above-ground windows and a sliding glass door. Jim and his team of installers were fantastic. Although the windows took a bit longer to arrive (due to to a delay at the manufacturing facility), the windows were ready three weeks later than originally quoted. But they got our installation scheduled right before the big cold snap in December, and all of the new windows were installed before the cold set in. The extreme temperatures kept them from putting the finishing touches on the installation until a week later, but we were grateful that they worked so hard to get the new windows installed before the cold weather set in. And once it was warm enough to do all the finish-work, Jim and his guys knocked the work out in a day. We live in a very old home, so I was a bit leery of using a company that I assume does a lot of work in the suburbs. But we are very pleased with the Sunrise windows we purchased, and have received many compliments on the improvements from our Park Hill neighbors. I've already recommended Colorado Window Source to other friends who are thinking of replacing their old-home windows. read more

I bought an old house and wanted to remove a window and pop in a door. The guy that came out from the company spent the whole time whining about what a hard project it would be, pointed out everything that would go wrong (that didn't), told me I would have to do all of the "extra" work that went with the project (paint, trim, single step down to patio), came up with a bad solution that wouldn't fit the style of the house, and then quoted me three times what another company (that completed the work) did. He also told me to get rid of the big, beautiful, old windows that I love. :( He seemed like a nice enough guy and he was friendly to my dogs... but I wouldn't recommend the company for challenging projects or work on older homes. read more

CWS is a local company with competitive prices and good service both on the sales side and the installation side. I did a couple of price comparisons before deciding to go with CWS. They were the only company that was not going to charge me extra for not being on the first floor. There was even a company that had graded charges based on how high up (e.g., second floor more expensive than first, third floor more expensive than second, etc.). I appreciate a company that doesn't nickle-and-dime their customers for things that really don't add that much more work. They were speedy with coming out to measure, getting us set up with a quote, getting a final measure, ordering the windows, and installing them. My only complaint is that the estimated time to install turned out to half the actual time to install. However, I understand that a job may seem easier than it actually turns out to be when things start to be taken apart, so I can't really hold it against them. This company is great! read more

I also am in the service industry (Realtor) and I come across trades all the time that I am asked to refer. I also could be described as having high expectations for people that I refer and work with. I refer lots of people everyday to my clients from lenders, to inspectors to roofers and landscapers. With that said I take giving a referral very seriously and expect the trade I refer to be top notch. CWS is just that - top notch! After exhaustive research on types of windows I finally stumbled upon Colorado Window Source and I am glad I did. This company understands service and the needs of the client. I was impressed from the moment I met Kurt for my bid. He was professional, on time and understanding of my project needs and budget. Believe me, I met with 7 other companies before CWS. He was also more knowledgeable then his competitors selling the same product (Amerimax Windows) It was absolutely vital to me that whomever I chose and entrusted for a major renovation on my house that they meet two criteria - Be Professional & Be Competent. I felt that it was just as important to pick the right window, the right company and the right installers. CWS again exceeded all of my requirements. And as an added bonus CWS was nearly 2k cheaper then their competitors. Once my project began it was clear to know that I had indeed made the right decision in choosing CWS. Their installers were just as professional, a joy to be around and did an absolutely beautiful job on my windows. They were careful and respectful of my time and my house. They were clean and on time and their work and craftsmanship was stunning. They went above and beyond in my opinion. As an added bonus Steve from CWS popped in and out from time to time to check in on the work and my comfort level. Across the board this is an A+ organization run by professionals that shoot strait and stand behind their work. They are great guys and exceeded all my expectations. I highly recommend them to everyone I know and when I am selling houses that need windows these are the "goto" guys. Don't hesitate in using CWS for ANY project. I guarantee you won't be disappointed! read more

No concern, urgency, responsiveness, or quality control. 1. I liked the salesperson, Steve. 2. Installation by Mitch immediately failed. 5 of 15 windows were measured wrong requiring a new order that would take 6, more weeks. A skylight they cracked attempting removal was left in place. 3. Rained 1 day after partial install and water literally drizzled into my dining room and pooled on the floor. Installer came back 2 days later at 8:30 at night, in the darkness, to take a look. I had to caulk the windows myself to try to slow the major leaking. I discovered they were only about 2/3 caulked by the installer. 4. The second install was scheduled but the installer did not show up. Installer finally called back at 2 pm to say he was never told and couldn't fit me in until the weekend... too busy. 5. When the second install began, I asked them to remove the failing flashing, replace the rotting 3/4" stops, and seal all the windows. They replaced the stops, but did not caulk the windows completely. 6. The next day it rained and water drizzled into my dining room and pooled on my floor. 7. The Ops Manager Scott and I spoke and, after we resolved that the windows leaked prior to removing the flashing, I was now told that new flashing was required. They offered to install it for "less" than my other bids of $2,100. 8. Installer called on the day of the measure for the steel flashing and offered to do aluminum instead as he could break it on site and it would fit better... the scheduling options were that following Sunday, when I was out of town, or 19 days later on July 30 because he was all booked up otherwise. This was a terrible experience-- typical of hack contractors who show no urgency, concern, or responsiveness. No good faith offer was made by Scott at CWS to make things right other than that he would beat the bid I had from another flashing contractor. My advice is pay by credit card, then withhold payment until after you have run your hose on your windows for a half hour. Expect a several week run-around and threats of taking you to court if there are any problems and you withhold payment. I will be posting photos and videos of this fiasco online. read more

Like many others here have said, they were fine at first. Vic sold us on the Anlin windows using models -- those were much better quality than the windows themselves turned out to be! but the worst part was the install. it was so bad (see below) that we had to have someone else come back and repair 2 of the 3 installations. they looked ok after that. But the third window (living room) wouldn't open without a lot of force. This all started in Oct 2019. they sent Paolo to look and he said it was a bad window. The guy who came and fixed the other two installs said no, he thought the LR window was installed wrong. Anlin sent a rep, they said it was measured wrong and ordered a new sash. When the new sash showed up (in January!) the guy couldn't even get the old one out. Now the finger pointing started -- Anlin said bad install, Leo at Col Window insisted it was a bad window. In February 2020 Leo said they were going to start all over with a new order. We said never mind, we still owed some $$ so would accept the sub-par window for the price. But they never apologized for the original delay, or the bad original install, or the defective window. Kept asking us to pay the balance. not very good quality or customer service. Run away!! Milguard windows are a much better deal, and you can find a company that cares more about its customers. read more

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WARNING to fellow Americans!!! I am not surprised to find out that Colorado Window Source has filed for bankruptcy in March of 2020. You can easily find this public record on the web. With a lack of ethical behavior and accountability, poor customer service and a low morale this company has NO FUTURE. On June 26, 2020 I received a harassing and bullying phone call from the owner of the Colorado Window Source company, Leo Durocher, 30 minutes after an installation of the windows has been completed at my property. Leo ACCUSED ME of refusing to give the workers a final payment, when they left. He threatened to report me to a collection agency. He raised his voice, and talked to me in a very demeaning manner. Unsuccessfully I tried to insert my explanations and assure him that I had no intention to withhold the payment. The installers did not even ask me for the check. There was some misunderstanding. Also, when I signed a contract with a salesman Victor Ulman, he informed me that HE will come to inspect the windows at the completion, answer any of my questions and get a final payment in the form of a check from me at that moment. So, I was waiting for that to happen. During this abusive behavior by Leo Durocher my son grabbed the phone and "calmed" the guy down and demanded that Leo would treat me respectfully. When my son gave the phone back to me, all I was able to whisper was: "Please send your worker to pick up the check". I was shaken and short of breath, my heart was pounding so hard in my chest, so I felt I was going to collapse. I don't think Leo will let anyone talk to his mother this way. But he lost his cool with me, a 60 year old woman. He acted unprofessionally, he was confrontational and absolutely out of control, acting like he was under the influence of some kind of substance. I felt violated and abused. I felt he could harm me physically, if I would stand in front of him. Throughout this "window" project with this company that took from 2/28/2020 until 6/26/2020 I got an impression that the owner is completely "out of touch" with his business, not knowing what is going on. His salesman Victor Ulman has an implied authority while working for this company. Victor told me that a brushed nickel finish handle would cost $95. more than the white one. So when I asked Leo if it is possible to replace the nickel finish handle, I ordered initially, back to the white one he said the white handle is more expensive, and he will charge me the difference. When I called Victor to confirm his initial statement about the nickel handle being more expensive, Victor said that the owner decides how much to charge for the white handle, and Victor cannot be held responsible for the owner's decisions. It was a very uneducated and unprofessional response. Victor has to realize that he has an implied authority, and in this case, the nickel handle is more expensive, and the company owes me the difference, because I ended up getting a white handle. Another representative, Paolo, is not trained to provide an ethical service either. In a conversation with me he was hot-tempered and confrontational. He accused me of lying, after I mentioned that Leo told me that the deliveries happen on Mondays. He argued with me saying that deliveries take place on Wednesdays. This is not what Leo told me. Seems to me Leo has no idea when the trucks deliver the product. Neither Leo, nor Victor knew STC (Sound Transmission Class) level for the product they sell to the customers. All in all, if you don't want to get abused, avoid this failing and misogynistic company. Don't buy into their statements on the company's web site: "Customer satisfaction is our priority", "...most punctual, informed and reliable in the area". I don't understand how this company could receive all the awards listed on their web site, all things considered, and all the complaints I read on the web!!! There is something fishy about that...Go with the Big Box companies! They will not call you "difficult", when you check on the status of your order. read more

I had worked with Colorado Window Source before, years ago, and they were fine for that project. I gave them another try on some new windows and it has been a disaster. All went fine with the ordering but when they came out to install the windows the windows were measured wrong and did not fit. The installers spent the rest of time trying to not take blame for the issue. I was told by CWS they would do an expedited order on the replacements. Two months went by and I never heard anything so I called to see an estimate on the reorder deliver/installation. I don't have a problem with mistakes or issues but I do have a problem when you put down a sizable deposit and no one calls you back after repeated calls, messages, and emails. There has been no sense of urgency, no communication on the part of CWS, and constant promises without delivery. This is basic business 101, if there is an issue fix it and communicate with the customer. At basic business 101, CWS has failed. read more

We've used Colorado Window Source twice to replace windows and a patio door. They are great to work with, and we are very happy with the quality. No pressure sales, honest, fair, and on time. read more

Travishamockery!! Really that sums it up. The only reason why they even get one star is because their installers rock (Jose- siding and Brett- windows). If only I just had to deal with them. This whole process has been riciulous. They literally let me sign a contract for something that wasn't available- 3 times (with months of notice in between). But that's not all. In the end they just said we don't have it and deal with the gutters- which were also not put far enough from the foundation. We bought both replacement Windows and Hardie siding. Paid extra for lead safe install and they didn't even do it. Paid to get the siding replaced and then they said- no you didn't you just get to get your rotten wood wrapped with metal coil. It will cost you a bunch more ($1700) to do it right. Why would I want to cover rotten wood with metal!!!!!!? I found a copy of the original contract that showed we were supposed to get the trim done- they knocked off $200. I choose them originally becasue they were $800 cheaper on the project as a whole. I would have paid $2000 to not deal with them- the bosses/owners were pretty jerky about all their mess ups too. This was our test run do finsh the windows on the big house- 28- so glad we're going with ANderson for that. You can contact me with questions- I'll be more than happy to tell the whole story. read more

Great product and service at a very competitive price. Install was exactly as promised and right on time. Good guys to work with!

After scheduling an estimate with Colorado Window Source which was an easy process, I've never been so displeased with the lack of professionalism of a contractor. Most importantly, they wasted our time and was unable to provide an estimate due to "lack of architectural plans" (seriously??), while three other window installers were able to provide a bid without issue. Thus, look elsewhere for your window needs and most importantly, DO NOT WORK WITH CHRIS CAYO. read more

Had CWS out to quote replacement of all the windows in our home. They were quick to make appointment, on time for the appointment but could not give me an instant quote. I was told I would have the quote in a couple of days. Never received quote. If you can't even get me a quote in the time promised why in the world would I use you. Thanks but no thanks. Edited - to add that I did finally receive the quote several days after it was promised. I was told that this was due to the fact that the email that was sent to me bounced. Interestingly my email address is my name so it is not that difficult, and why did it take 3 extra days past the time the bid was supposed to be sent for someone to call to tell me the email bounced? read more

We had every window in our house replaced by CWS and could not be happier. We did this over two separate orders and install processes as we have a lot of windows and wanted to spread the costs out. We were equally pleased with each process. I have referred them to a couple of other neighbors who have also used them and were very happy with the results. The sales process was fast and easy and we really understood what we were getting into before we got started. We checked them out and talked to a few references before we proceeded with placing the order. The installation process (including scheduling) was very professional and very efficient. We have had windows replaced in another house by another company and it was a nightmare getting the finishing touches completed. (and their windows are far nicer) After the installation, we had to vacuum, dust, and touch up the paint (both inside and out) but after having the windows ripped out, having the drywall and trim removed to accommodate the new high quality wider windows this is absolutely mandatory. We were surprised by how little dust there actually was considering the amount of drywall and trim that was removed. The painting was not mandatory, but since we have some dark colors and we are perfectionists we went ahead and did the touch up to have nice crisp paint lines against the windows. They have come out and done the free follow-up inspections as scheduled and even found a screen that didn't look aesthetically correct so they ordered a new one and had it replaced very quickly. (I should add that one of the owners of the company comes out and does these inspections). I would not hesitate to recommend CWS to anyone. read more

WORST experience ever. Put the deposit down in June 2015, was told by the salesperson that due to the oversized patio door that we ordered it could take up to 12 weeks. Project NEARLY finished in December 2015 but not finalized until March 2016. Windows are beautiful, project manager was amazing but contractors missed appointments, left items broken at our house, did not clean up after themselves, etc. Not to mention the salesperson was never seen or heard of again unless I was persistent to get an update. The project manager was truly the only reason I stayed with this nightmare of a project, but I am taking my roof and deck improvements elsewhere. read more

The entire experience has been fantastic! No pressure sales, only fair and honest information regarding the products and associated pricing. Thanks Kurt! We have been prolonging the window replacement for some years, but finally decided to add more efficient and easy operating windows to our home. I only wish we had done this sooner! We have noticed a difference in the electric use during the summer and are excited about the savings we will surely see with the winter usage. The windows work well, but keep in mind the looks are great as well. It may sound silly to some, but the clean appearance that it has added to the exterior and interior of our house is great. Remember that you have choices of window casing for the installation that really allows you to upgrade the interior look of your windows. Care was taken during the installation (Thanks Bret, Steve, & Taylor) process to stay clean during the day and at the end of each day. The windows and slider were ordered and built specifically for our house - not a one size fits all approach. We have had some small follow up issues, and the response has been professional and timely. We have decided to have two other windows replaced that we originally chose not to do with the original project. Same great service the second time around. If you appreciate fair pricing, great products, and focused customer service then go with Colorado Window Source for total satisfaction. Tina & Tim S. read more

We had all the windows and two sliding glass doors replaced in the upstairs of our home by Colorado Window Source about 6 months ago. They also replaced two windows in a rental property we own that my mother lives in. David went above and beyond by actually going out to my mom's place and sealing the leaking window to keep water from coming in while we waited on our new windows. Our windows were installed timely and professionally without any damage to the house. I felt the installers did a great job and cleaned up well. We are very pleased and will use them again for replacing the rest of the windows at the rental property. read more

After much research I picked Colorado Window Source to install a large patio sliding door on my house. I did extensive research because I wanted a 12' door installed in place of for 5' door. As this would take installing a new header and moving electrical to be able to make this work. The guys at Colorado Window Source did an outstanding job and really made it easy for my electrician to complete the electrical move and they made sure my house was protected at all times. The finale product was above my expectations and increased the value of my house by more than the cost of the door. I would highly recommend Colorado Window Source to anyone looking to have a similar job done or just to have their windows and doors replaced. read more

I got new windows from Colorado Window Source and can't say enough great things about them. They were competitive with other estimates on windows for my house, which was built in 1952 and had the original metal windows. The old windows would freeze on the inside when it got cold out, so needed replacing. This is the 2nd winter with the new windows and I'm seeing heating bills that are over $100 less than what I was paying before the new windows came. It's also much cooler in the house in the summer. And my housekeeper says that there's a lot less dirt coming in because the windows have kept it out. CWS also replaced my doors and blinds and they look great. Blinds are all Hunter Douglas and cost less than anyone else had estimated for me. Installers did EXACTLY what they had said, including showing up on time, cleaning up after themselves and giving me a quick tutorial on how to work my new windows and blinds. And, they replaced the lock on the back door because the old one didn't fit, including going to the hardware store and shopping for one that would look good in my kitchen. LOVE these guys. read more

We had 5 windows installed through Colorado Window source. They accommodated our requests, were timely and professional and their owner Scott personally took care of all the paperwork required. The sales person Steve was a pleasure to work with and not too pushy. Gave us a competitive price. Their installers Jim and Bill were patient enough to answer all our questions and took extra care in meeting our HOA requirements. Their Dry Waller - Enrique wasn't up to the mark and they lose a point in my book for that. We plan on using them again to get window work done on one of our rentals. read more

Colorado Window Source installers suck! They insisted on a full week for an appointment time frame. They would schedule and then just not show up. I was required to rearrange everything in my small apartm,ent so that I could barely move for a week and had to constantly move furniture around to get at things that I need such as clothes, my bed, or a place to sit down. Then when they finally do the installation and I finally move my furniture back, they come barging into my apartment screaming at me while I'm trying to have a business discussion on the phone and demand that everything be immediately moved back so that they can caulk. Surprise! If I don't like it they can just go and try to get my landlord to evict me. These people are a**h*****! read more

Colorado window source is the best. We have had our Windows's for about 5 years and they were very cordial,expericed installers. Kurt one of the owners came out gave us a quote. We were very happy with them and also they do follow up after windows have been installed on several occasions. If you are looking to purchase windows,doors or shutters this is the place to go, you will not be disappointed!! Char read more

Overview: My Wife and I were very pleased with our experience with Colorado Window Source and there is not one thing that I can think of that could have been better. A few days after moving into our 15 year old house in Lone Tree in 2007, one of the original wood framed windows literally fell out of its frame onto the roof. We became motivated window buyers that night. We interviewed several companies and decided on Colorado Window Source for the following reasons: 1. A local, family owned company. 2. Low sales pressure and a feeling that Scott and Kurt were more interested in helping us achieve our goals rather than a quick sale. 3.Great ideas and suggestions for improving the original windows for a more stunning effect. We added windows to bedrooms, and replaced the single door to the rear yard with a 3 panel sliding glass door which opened up the room and gave the effect of being in our back yard while in the house. These modifications required an expert engineering review which were handled as well. Installation day arrived and the two installers showed up on time and worked for 6 days 10 hours per day. At the conclusion of each days work, cleaned up inside and out and were very careful when working inside the house to protect the room from damage and dry wall dust. After the installation there were several inspections and all (minor) issues were resolved immediately at no cost. 5 years later a dog knocked out the sliding screen door and broke off one wheel. I went into the office near my house just to find a replacement part. Kurt recognized me, remembered my name, my wife's name and our house! I told him what I wanted and he said that he would find the part, send a guy over to fix it and if unable to find a part ( for a door that was 5 years old) he would replace it. This company is sincere in establishing a life long relationship and I recommend them without hesitation. read more

I'm sitting here today looking through our new windows at an unobstructed view of a beautiful fall day. Can't ask for anything better than that! We replaced all of our builder grade, substandard windows with windows through Colorado Window Source and love the difference they have made. Many of the windows we chose were picture windows which allowed an unobstructed view with others that open to the side so that we could enjoy the cool evening breeze. We are looking forward to how the new windows will increase the comfort level in our home during the winter. Replacing windows is not a quick decision because of the expense. You want to have the piece of mind that you are getting a good quality product and a fair deal. We got quotes from a number of places comparing both the product and the cost before deciding to go with Colorado Window Source. The process was not seamless but we can honestly say that we are more than pleased with the end result. Gotta love the beauty of Colorado's landscape! M & P in Castle Rock read more

I love companies that keep their appointments and arrive on time. We've used them twice for window replacement and have been pleased with the product and the customer service. read more

I had Colorado Window Source replace my windows and they did such a great job I recommend everyone to to use them for window replacement or any window needs! They charge so much less than competitors but have quality glass and I'm just so pleased with their work. Highly recommend!! read more

I used Colorado Window Source for a number of projects over the past 10-11 years. Our first project was replacing all the windows in the basement and kitchen 10 years ago. That worked out well and about 4 years later we had them replace a number of bedroom and our office windows. Also had them replace front & back doors and contracted them to paint our house. Fast forward to now - the 3 bedroom windows they replaced 6 years ago have a lot of damage to the trim-board and also the siding around the windows. CWS claims it's due to the lack of painting. My problem with that explanation is that the ONLY windows that have this 'damage to the trim board' are the three windows that THEY replaced. Leads me to believe that it's not due to 'lack of painting' but some installation issue. Now they won't answer my emails asking for further information. I won't be using CWS to replace the rest of the windows in the house next spring and I would suggest you think twice about using them. read more

I ordered window inserts from a big name home improvement store (the orange one). Over a year later, my installation was incomplete, I had multiple warranty issues I couldn't warranty, and I found out that they had knowingly taken away egress from the bedrooms. Thank goodness I found Colorado Window Source - they pointed out the egress issue. I told them my situation, and they held my hand through the entire process. They helped me deal with the previous installers, came out for the free estimate, waited patiently and answered all of my questions while I fought with the other guys for a couple months, then came out to the house again to make sure they were getting me exactly what I wanted. They listened to my every concern and wish, even calling the manufacturer to get answers for my really obscure questions. All of the staff was incredibly knowledgeable, and I got exactly what I expected - amazing windows!!! The installation went great too. They fought for 3 hours with one crooked door frame to make sure my patio door was installed properly, and they even took extra care to remove the old windows in good shape so I could return them. I learned a lot from the installers - they too gave me the information and confidence I needed to finish my fight with the big name place. A few months later, I had water come in one of the windows when it rained, and they came out to the house right away, no questions asked. The installer found a crack in my siding I hadn't seen and sealed it for me. By far the best investment I have ever made. Full windows and doors from CWS were only a few thousand dollars more than the inserts from the other place, and were triple-pane and energy star rated for 9000 ft elevation in CO, which are two things the other guys said didn't exist. I plan to call CWS when I need new siding. Best home improvement experience I've ever had! read more

I had six windows replaced from a Hail storm and after considering three other local suppliers , I chose CWS. Leo was clearly the most professional and credible- from the quote process through the sizing and install they were clearly more qualified than ZEN and JDI. They did what they promised, submitted and met all the douglas county code requirements. I was fairly demanding- with the quality of the crew I wanted and they accommodated us. A very good experience. read more

We asked for a quote to replace a side door on a garage, due to a recent break-in. We made it clear that we needed this work done soon, and that it would be covered by an insurance claim. Our estimator, Paolo, seemed casual enough at first, but then asked to sit inside our home, which made my wife uncomfortable, and proceeded to take the next hour to call various suppliers and supposedly prepare our estimate in front of us. Mind you, we were taking time from work to have this estimate done, and we certainly didn't care to wait around for what we saw as his personal clerical work. It took several notices over the following days for Paolo to realize that he had our email address wrong. Six days later, we received our estimate of $1700, for what we specifically asked to be a CHEAP door! Knowing this was ridiculous, we asked for an itemized estimate to see where these out-of-whack costs were coming from. Obviously knowing they were hiding a huge premium, Paolo declined with a snarky email (citing company policy of course), and we chose to move on. We were quoted yesterday at $700 max! They clearly thought we'd pay anything with insurance footing the bill. read more

Several years after our windows were installed by CWS we were having trim work done on our house and our contractor noticed that almost all of our windows had no insulation around them. The space between the window frame and the stud was left open when the new windows were installed leaving the 1/2" drywall inside of our home and 1/2" trim on the exterior of the home as the only barrier between the elements outside and the inside of our house. What's the purpose of new windows if during the installation process these spaces are going to be left wide open? Good question. I called CWS and spoke to the owner of the company and when I explained the situation he noted that the installers use an insulating gun that only allows them to fill gaps that are 3/8" or larger on the outside in order to allow the nozzle to fit. Unfortunately, most of the exterior spaces are smaller than that dimension. When I pressed him on the subject asking why don't they use a different nozzle or process for filling these critical spaces with insulation he became agitated and said he'd send an installer over with $70 worth of insulating foam spray and fill all of the gaps. Why don't they do that in the first place? Great question. We ended up having our contractor who was doing the trim replacement insulate around all the windows that the CWS installers failed to do. The windows themselves appear to be OK but it really shows the poor commitment to quality and poor workmanship that CWS delivers. When you're spending thousands of dollars on this home upgrade I'd expect the company to ensure these important details during the installation process are taken care of otherwise it really defeats the purpose of new windows when you have cold air streaming into your home around those uninsulated areas. In the end if you're looking for replacement windows in your home my opinion is to do yourself a favor and look elsewhere. Enjoy the view. read more