The mid-bar of a single hung window can be adjusted up or down to accommodate plantation shutters or furniture. By controlling the sight lines, we make sure you are happy with the view from the inside looking out.
A simple yet elegant design featuring a contoured profile will have you feeling extra proud of your home's curb appeal.
Our Signature Series windows offer value with style, safety, energy efficiency, and strong performance. Plus with superior-quality glass, you'll enjoy year-round thermal protection.
EnviroSeal nXt outperforms other single-seal and dual-seal spacers. Windows built with EnviroSeal nXt exhibit the lowest failure rates in the industry which is ideal with insulated glass units. Considered the glass spacer of the future, this warm-edge glass spacer is highly energy efficient.
Designed without metal, the spacer conducts less thermal energy thus improving the edge of glass temperature by as much as 16.6° F when compared to other spacer systems. By regulating the thermal transfer, windows with EnviroSeal nXt technology will keep your home comfortable year round.
Cardinal LoÉ3-366 offers the ultimate experience in window performance glass. This glass delivers the perfect balance of solar heat control and high visibility. It also provides peak levels of year-round comfort and energy savings, making it the perfect glass regardless of which part of the country you live. With three layers of silver on the glass, you are certain to enjoy year-round thermal protection all day, every day.
Installing ENERGY STAR® qualified windows lowers energy bills and saves you money over single-pane and even new double-paned, clear-glass windows. Windows with our high-performance glass package are ENERGY STAR® qualified for all regions.

Watch this video for a quick overview of our exclusive Brennan Signature Series single hung windows.
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Below are some of the questions we get the most. If you can't find your question, please reach out and ask your question today.
Absolutely, we serve homeowners, contractors, and other home improvement professionals.
We understand that people have busy schedules, and finding time for everyone to attend an appointment can be challenging. That’s why we don’t require all decision-makers to be present for a consultation. However, having everyone involved can make the process more efficient, as it ensures preferences, questions, and decisions are addressed upfront. If coordinating schedules isn’t possible, we’ll work with you to provide the necessary information in a way that suits your needs.
We’re a Texas-based home improvement company that’s been helping homeowners upgrade their windows and doors since 1979. We’re known for our expert installation, top-rated products, and a pressure-free approach.
Common signs it’s time for a new door would include feeling drafts, difficulty opening or closing, visible damage such as wood rot, or an outdated design that no longer fits your home.
Wondering if we serve your area? We proudly offer window and door replacement services across Texas, including:
Since our founding in 1979, we've offered window and door replacement services to homeowners in the Dallas-Fort Worth Metroplex.
Our headquarters is located in the Entertainment District of Arlington, Texas. Feel free to drop in during business hours to get a feel of our products in person.
Brennan Enterprises proudly serves homeowners in the Greater Houston area, delivering trusted window and door solutions backed by expert installation.
Ready to experience the difference of working with Texas’s leading window and door replacement company? Book your free consultation today and let’s create something amazing together!