Capstone Windows & Doors: Window installation service in Phoenix, AZ

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• Tom Jackson

  • 5,0
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  “We couldn’t be happier with Capstone! The Marvin Infinity windows themselves are fantastic – they’re clearly a premium product, and we really appreciated that their frames were thicker than our old windows, which is a rarity in replacement windows. We’d actually had Marvin Infinity windows installed in another home, so we knew what to expect. But honestly, the real star of the show was the installation. The crew was incredibly fast, professional, and took amazing care of our house, causing virtually no damage inside. The stucco work was also exceptional; Capstone’s contractor matched the existing stucco perfectly, and once the windows are painted next week, you won’t even know they were replaced! It’s so frustrating when replacement windows look obviously new. We’ve seen so many homes where the windows scream “replacement” because of bulky frames or the need for extra molding. Everyone we interacted with at Capstone was fantastic, and the quality of their work is truly outstanding. We’ve attached some photos to show the transformation – including a before and after shot of the large windows and an example of their work on some of our other windows. You could probably find a cheaper option, but we seriously doubt you’ll find one that’s as good.” report abuse

• Jasmine Stevens

  • 5,0
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  “I was so pleased with the window replacement Capstone did for my condo. They really went above and beyond to meet my HOA’s specific requirements, perfectly matching the original style. And they also brightened up the interior with a fresh white – it’s made a huge difference! The team did a fantastic job with the patching, too, ensuring everything matched perfectly both inside and out. I highly recommend them!” report abuse

• Daniel S

  • 5,0
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  “Adam, Greg, Audrey, and the whole installation team were fantastic! They were incredibly professional and accommodating, really working around my schedule and never pushing anything. The quality of their work was outstanding, and I’ve already had several people asking about the windows and doors – which is fantastic!” report abuse

• Josh Daugherty

  • 5,0
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  “We’re really pleased with the new windows – it’s fantastic to finally have ones that weren’t original to the house. The noise reduction is a huge improvement, especially since we live so close to the road, and we’re also seeing a noticeable difference in our energy bills! The only small thing that would have made it perfect was if they’d included repainting the stucco after it was redone. Overall, we’d give it 4.5 stars.” report abuse

• Tara Bostrom

  • 5,0
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  “Overall, we were really pleased with our recent window replacement project with Capstone in September 2024. They kept us well-informed throughout the process and the team arrived on time and worked incredibly quickly. They were also very considerate, taking care to protect our home from the dust created during the removal and installation. And we were particularly impressed with the quality of the stucco repair work – it looked fantastic! We’d definitely recommend Capstone.” report abuse

• Monika Truax

  • 5,0
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  “I couldn’t be more pleased with Capstone Windows and Doors. From the very beginning, I felt like I was working with a trustworthy company – Greg, the owner, was so knowledgeable and honest, and he really helped me find the perfect windows for my home without any high-pressure sales tactics. The whole process was incredibly smooth, with prompt scheduling and clear communication. The team was fantastic – professional, detail-oriented, and they took amazing care of my house, even protecting it from dust while they worked. The installation itself was quick, taking just two and a half days, and I absolutely adore my new Infinity by Marvin windows. The soundproofing alone has made a huge difference in the feel of my home. I highly recommend Capstone – they did a fantastic job!” report abuse

• Adam Robledo

  • 5,0
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  “Capstone did a fantastic job replacing all of our windows and doors – we’re absolutely thrilled with the results!” report abuse

• Kristi Smith

  • 5,0
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  “We’re really happy with our new windows and the four-panel sliding glass door from Capstone Windows & Doors. They’ve really enhanced the look of our home, and the sliding door gives us a fantastic view of the backyard and makes it so easy to step out onto our patio. It took a little longer than we initially expected to get everything sorted out, but the quality of the work was outstanding. We did a lot of research before choosing Capstone – we looked at several companies and were really impressed with their reputation and how focused they were on customer satisfaction. We feel like we made a great choice.” report abuse

• Jay Rivara

  • 5,0
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  “I was really pleased with Capstone Windows and Doors – they did a fantastic job replacing the Marvin windows in my house. Adam was incredibly helpful in getting everything quoted and arranged, and Audrey kept everything running smoothly. The installers were also top-notch, and they were really careful, minimizing any disruption to the stucco exterior and didn’t even require any interior painting! Overall, I felt the pricing was fair, and I’d definitely recommend them for your window replacement needs.” report abuse

• Chad Snyder

  • 5,0
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  “We were really pleased with Capstone – they did a fantastic job replacing all the windows in our house, transforming them from arched to square. The installation team was truly outstanding; they were incredibly professional and meticulous, even going above and beyond to reframing the walls. The quality of the windows is exactly what we were hoping for, and while the whole process took a little longer than we anticipated, it was completely reasonable. Overall, we’d definitely recommend Capstone if you’re looking for a reliable and skilled window replacement company.” report abuse