Install Energy-Efficient Windows with Confidence

reduce energy costs and improve comfort.

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we specialize in full home window replacement and insulation glass unit replacement

Install Windows That Lower energyCosts in Texas Heat

for measurable performance

Upright Windows LLC is a veteran-owned, family-owned window and glass company based in Klein, serving the Greater Houston Area. We focus on window installation and replacement for residential properties, along with roofing and siding.


You'll know what to expect from the start. We walk you through the scope, the timeline, and the products we use so there's no guesswork on your end. Every project is approached with the same level of care, whether it's a single window or a full house's replacement.


Upright Windows LLC was founded in 2023 out of frustration with inflated replacement window pricing. Our approach centers on honest pricing, transparent communication, and service before self—values that guide every job we take on.


Reach out to discuss your project and get straightforward answers about what's involved.

A two-story tan home with a covered front entrance featuring two white columns, arched windows, and brown double doors.
A worker on a ladder installs an upper window on a tan house with stone accents, while another person walks toward them.

Upgrade Every Window. Transform Comfort, Efficiency, and Value Throughout Your Entire Home

Built Right From the Start for Long-Term Comfort, Efficiency, and Performance

Designed to Fit Your Home Perfectly — No Limits on Style, Size, or Vision

Stop Paying for Air That Escapes Through Glass

Areas We Serve

  • Montgomery County, TX
  • Harris County, TX
  • Fort Bend County, TX

How We Handle Your Installation

From the first conversation to the final walkthrough, you'll have a clear picture of how the work progresses. We document each phase, confirm scheduling in advance, and keep you informed as the installation moves forward. There's no waiting around for updates—everything is laid out upfront.


Our team prepares the site thoroughly before starting, protects your property during the work, and leaves the area clean when we're finished. You're never left wondering what comes next.



Here's what that means for your project:

Two white, double-hung windows with fixed transom windows above, set into a plain, off-white interior wall.

Energy-efficient double-pane windows with Cardinal 366 LoE coating that lower energy costs and improve comfort

The exterior of a light gray two-story building featuring four windows and a triangular roof with a round vent.

Fast turnaround that keeps your project on schedule without sacrificing quality

A side view of a tan brick house with two windows and a tan trim, set against a lawn under a cloudy sky.

Clean job sites maintained throughout the installation process

A dark wood Craftsman-style front door with a transom window, glass panes, and a silver handle, flanked by two lanterns.

Extensive experience serving homeowners across the Greater Houston area

Let us know what you're planning, and we'll outline the steps from here.

Rely on Honest Pricing and Transparent Service
A veteran-owned, family-owned company built on service before self.

Dependable Work from a Team That Shows Up

Upright Windows LLC operates with the same discipline and accountability that come from military and family values. We're a veteran-owned and family-owned business, and that background shapes how we approach every commitment. When we say we'll be there, we are—and when we quote a price, it's the one you'll pay.


Our reputation is built on professionalism, attention to detail, and doing what we say we'll do. No job is too big or small, and every customer gets the same level of care and follow-through. You can count on us to treat your property with respect and deliver results that hold up over time.


Start the conversation and see how we can help with your window or glass project.

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