Great quality windows, doors. Most of all great customer service, always ready and eager to help with any questions

We purchased windows and a balcony door through the company, and the quality is excellent. The delivery times and installation were completed on schedule and at the highest level. It was a pleasure to work with true professionals—the company is very good, and I highly recommend it!

We ordered windows and doors from Wintech for our new home, and everything went perfectly! We received detailed consultations, and they helped us choose exactly the window option we wanted—plus the price was 20% lower than what other companies offered. Delivery and installation were completed within the agreed time frame. We definitely recommend this company!

I've had my French patio door replaced by ASCO and am really happy with the results. The quality of the door itself is amazing and is so much better than what I was offered by several local companies. The locking mechanism, materials, sound proofing – everything is exceptional and speaks quality. They've manufactured the door to my custom dimensions and took care of the installation with finishing materials. The original door could not withstand the weather, was drafty and flimsy. This new product from ASCO looks and feels like it will outlast the whole house. Plus the price was so much better than the competition. They will be the first who I'll call for future windows replacement for sure

I ordered windows from this company and am satisfied with the quality of the products. After replacing the windows, sound insulation in the house improved, and the AC unit now turns on less frequently.

I recently had European-style windows installed in my church, and I am absolutely thrilled! From the very beginning, everything went perfectly: fast delivery, excellent service, and attentive customer care. The windows are a real pleasure in terms of quality—strong, stylish, and functional. The sound insulation is outstanding: now no street noise interferes with comfort inside. The thermal insulation is top-notch as well—during winter it has become noticeably warmer, and in summer it stays cooler, which significantly reduces heating and air-conditioning costs. The installation was quick and hassle-free. The installers worked professionally and carefully, without dust or mess. Everything was completed on time, and all my wishes were taken into account. I am very happy with my choice and can confidently recommend these windows to everyone who values quality, reliability, and comfort. If you want your home to be warm, cozy, and stylish, these windows are definitely for you!

Extremely satisfied with our over all experience with Wintech US. Would highly recommend Installation services with Wintech US. When you think quality think Wintech US European Windows, Sliding Doors, Entry Door , Exterior Doors. From my experience top quality at great price.

I ordered all my windows and doors through ASCO — Aluplast tilt-and-turn windows, Aluprof large fixed panels, Aluprof sliding doors, and a pivot front door — and I couldn’t be happier with the result. They nailed every detail, were responsive to all my questions, and accommodated every custom request I threw at them. These are triple-glazed, airtight, extremely energy-efficient units — easily better than anything I found from U.S. brands, and they were significantly more cost-effective too. Yes, they’re heavy — but that’s a good thing. You can feel the quality the second you handle them. Everything was delivered precisely as ordered, well-packed, no surprises. Even aluminum profiles came in two colors (was a totally custom request). If you’re building a high-performance, modern home and want serious quality windows and doors without overspending, I’d absolutely recommend ASCO.

We reached out to this company, and they exceeded all our expectations! From the very beginning, the team demonstrated the highest level of professionalism. We were impressed by their approach to every stage of the process – from consultation to selection and installation of the windows. The quality of the windows deserves special recognition. These are premium products that are not only aesthetically flawless but also functionally perfect. They look incredibly stylish, let in an abundance of natural light, provide excellent sound insulation, and ensure outstanding thermal efficiency. The installation was carried out with such precision and professionalism that it feels like the windows were always part of the house. Every joint, every detail, was executed perfectly. We are incredibly grateful to this company for their exceptional work, for windows that have become the pride of our home, and for a level of service that leaves nothing but positive impressions!

My recommend! Nice window!

I replaced three windows to improve sound and thermal insulation. The installation itself is not difficult, but the windows are heavy, so you definitely need strength or an assistant. The quality of these windows is much higher than American ones. They are much thicker, and the distance between the panes is significantly greater. It has become much quieter—passing cars are barely audible now. I will continue working with this company in the future.

The French doors look great! The team did a solid job-showed up on time, worked efficiently. Everything seems well-aligned and secure. Really happy with how it turned out.

Strongly recommend this company to deal with! I have ordered 47 windows for the whole my house in Katy, Texas. All of them arrived before expected date and was delivered and installed quick and professionally! The sound comfort and heating insulation improved great! Also the price for all the windows was twice lover than estimates from US windows companies. Thank you for your business!

Excellent quality, everything was done perfectly… Delivery, installation… Highly recommended.

We recently had new windows installed, and we are absolutely delighted! The quality is top-notch—durable, reliable, with excellent sound and thermal insulation. The house immediately became quieter and warmer. The hardware works smoothly with no sticking, and the design fits perfectly into the interior. I would also like to highlight the tight sealing—no drafts and no condensation. We are very happy with the purchase and highly recommend it!

We live just a few blocks from the ocean and needed reliable, hurricane-proof balcony doors. After researching several options, we came across ASCO LLC and decided to give them a try — and they absolutely exceeded our expectations! The doors are manufactured in Germany, which was a major selling point for us. My husband has always been looking for that exceptional European quality — something that truly stands apart from typical American standards — and these doors delivered exactly that. The craftsmanship is top-notch, and the entire process was smooth and professional. Communication throughout the project was excellent — clear, timely, and responsive, which gave us confidence every step of the way. We placed our order in October, and the doors were delivered and installed by February — much faster than we anticipated. Not only are the doors incredibly sturdy and beautifully designed, but the installation team did an outstanding job. Their attention to detail and commitment to excellence truly impressed us. We’re so happy with the results that we’ll definitely be working with ASCO LLC again when it’s time to replace our windows. Highly recommend them to anyone looking for high-quality products and expert installation!