“We had a great experience with the whole team from the salesman to the installers! The installers did such an awesome job, took their time and was very safe. There was literally no mess left behind at all which is surprising working with glass. I am very satisfied with my purchase and the warranty that comes with the install. Peace of mind and great service!”
Reviews
What Houston homeowners say
We take great pride in serving the Houston area with high-quality replacement window and door services. Without our happy customers, we wouldn’t have grown to be one of the most trusted home improvement contractors in Texas.

Here at the Window Source of Houston we only offer the highest quality energy-efficient replacement windows on the market. What distinguishes us from other window companies is that all of our windows are backed by a lifetime warranty. Because of this warranty, you can rest assured that you will have nothing to worry about once your windows have been replaced. The Window Source of Houston warrants to the original purchaser as well as the next subsequent homeowner on all (when applicable) windows and patio doors.
“My husband and I are obsessed with our new windows from The Window Source!! They were delivered in a very short time frame and only took a day to install. Great install crew - very clean, efficient, and paid attention to detail when sealing everything off. Great communication from Luis and his crew. The process was so easy working with our salesperson, Collin, and owner, David Mallette. We’ve been renovating our 80’s farmhouse and were in desperate need of an upgrade. Couldn’t be happier with our selection! Highly recommend! Window Type: Twinsulator black aluminum”
“Amazing work, had all windows and entry doors updated. They are professional and walk you through the entire process from start to finish. Our doors and windows look amazing and were done exceptionally well.”
“What stands out about The Window Source of Houston is the attention that goes into the entire process — not just making the sale. From the office and sales team to the measure tech and installers, there are REAL people behind every project who GENUINELY care about doing things right. Quality products, quality installation, and the little details that customers may not even know to ask about- all make a difference! So don’t just compare the price of the window, compare what you’re actually getting for that price. The product, the installation, the service, and who will be there for you AFTERWARD all matter and that’s where they really stand out!! 💚”
“We had a great experience with this window company from start to finish. The entire process was smooth, professional, and well-organized. The installation crew was courteous, efficient, and did an excellent job keeping everything clean and tidy while they worked. The quality of the windows is excellent, and we can already tell a difference in the look and feel of our home. The team took the time to answer our questions and made sure everything was installed correctly and to our satisfaction. I would definitely recommend this company to anyone looking for quality windows and professional installation. Great customer service, great workmanship, and a great overall experience!”
“The crew was on time and very professional. They were very detailed with everything they did. I would recommend them. Semper Fi”
“The windows are beautiful, the installation and measuring crews were very professional.”
“We love our new windows and the crew was very professional. The order was incorrect as put in by the salesman and I didn't catch it until after installation but they took care of it and installed the correct glass at no extra cost. The only advice is to check your window facing boards and replace before new windows are installed.”
“We are thrilled with the service and windows provided by The Window Source. The sales rep that we invited into our home was very knowledgeable and gave NO PRESSURE to buy. The installation team was outstanding. They were at work within 5 minutes of getting there. Each window fits perfectly. They protected the floors, covered the furniture, and cleaned up after themselves. I would recommend this company to anyone who will listen. They are Veteran-owned, and gave us (both Navy veterans) a great deal.”
“Every member of team was exceptional. From the sales to the final window was installed. The professional courtesy of the team and craftsmanship was one of the best I have had the pleasure to experience. I can't say enough of how amazing the Window Source Team is. I would recommend them to everyone”
“Met with Sales Director TJ today to discuss issues that prevented installation of our replacement front and rear doors that were to be installed a couple of weeks ago. The meeting was arranged by Project Manager Austin as a result of Installer Louis' astute identification of the issues he found before beginning the installation. The issues seem to have been a result of misunderstandings/miscommunications during the Sales Consultation a few weeks prior. No harm, no foul - mistakes happen. Kudos and thanks to Louis, Austin and TJ for their excellent teamwork in resolution of the issues. We look forward to the installation of our new doors!”
“We had 15 windows replaced in our home. Excellent service and installation. Definitely recommend Window Source.”
“Amazing work and window quality! I got several quotes, and Jairo was the only one who brought samples and took the time to give us a demonstration. The office stayed in communication with me every step of the way. They showed up for every appointment scheduled and thwy were always on time. Edwin’s installation team worked quickly and professionally. Anything they had to move (furniture, curtains, blinds) they put right back. They also did a great job cleaning up afterward. Overall, a really smooth experience from start to finish. I’m very happy with choosing The Window Source of Houston!”
“Replacing my parents' original builder-grade windows in their 25+ year old home was one of the best investments they've made. The entire process was easy and straightforward, and the installation crew was professional, courteous, and left everything spotless. Their old windows had broken seals, cloudy glass, and most wouldn't even open. The new windows have completely transformed their home. They've already noticed lower electric bills, less outside noise, and a cooler, more comfortable home that's much easier to keep at a consistent temperature. They also upgraded to bronze exterior windows and removed the SDL bars, giving the home a cleaner, more modern look that beautifully complements the brick and stone. My parents are thrilled with the results and couldn't be happier with the quality, service, and professionalism. I highly recommend this company!”
“The 16 replacement windows were installed in less than a day, about 7 hours. The workers first provided dust protection plastic sheeting over all the interior furniture, counters and on the outside only a few places were needed it. They only had a few windows open at a time so when it got hot outside I stayed in a back room with a TV. The workers were friendly and very professional. You could tell they had done this work before. I had some finished millwork in 2 of the rooms that they trimmed neatly to fit the windows. The windstorm inspector came about midway and later I got his report and the Texas Windstorm Certification. I also met the owner of Window Source David Mallette, as they finished up. I am very pleased with new storm proof windows. I also received the lifetime warranties.”
“Unbelievable job, great crew and left our home cleaner than when they arrived-could not be happier”
“We had 24 windows replaced. This company was amazing from the salesman all the way thru to the finish. Luis and his team were absolutely amazing. I was completely satisfied. There was one mistake but it was promptly taken care of. I couldn’t be any happier with the new windows. My old double pane windows didn’t keep the heat out anymore (26 yrs old). I was so impressed at how much cooler our house is w the new windows. Everything was put back (curtains, rods, blinds) and cleaned up. All trash carted off and Luis made sure we were happy with everything before he left. Our windows are not the standard 3 x 5. Most of them are 7’ tall so it costs us more than the standard size. I felt the price was very fair. Thank you Window Source for the wonderful team of workers you have.”
“The team that came out did an amazing job. So professional and clearly experts at that their job. I whole heartedly recommend Window Source!”
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