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Replacement Window Company in San Antonio, TX
A cooler, quieter home starts with better windows.
High-performance replacement windows installed by a trusted local team - without the pressure, runaround or surprise costs.
One local team. Five ways to improve your home.
Start with one project or coordinate several upgrades with a team that stays accountable from consultation through service.

Replacement Windows
Cooler rooms, less noise and everyday comfort.

Replacement Doors
A secure, energy-efficient welcome home.

Replacement Siding
Low-maintenance protection with lasting curb appeal.

Patio Covers
More shade and more usable outdoor living.

Seamless Gutters
Direct heavy rain away from your foundation.
See why local families recommend The Window Source for clear communication, professional installation and windows they are proud to show.
Read Customer StoriesCompare every style before you schedule.
Real product visuals make it easier to choose the operation, view and architectural look that fits your home.
Double Hung
Classic style with two easy-clean operating sashes.
Double Slider
Wide views and smooth horizontal operation.
Casement
A tight seal with full ventilation and modern lines.
Awning
Top-hinged ventilation that works well in compact spaces.
Picture
Uninterrupted views and maximum natural light.
Garden
A bright dimensional space for plants and kitchen views.
Single Hung
Simple, efficient operation with classic curb appeal.
Specialty Shapes
Custom architectural shapes for unique openings.
Vinyl
Low-maintenance frames with strong insulation and flexible finish options.
What would you like to fix first?
You do not need to know window terminology. Choose the problem and we will help narrow the right solution.
Heat-rejecting Low-E glass
Reduce solar heat gain and help rooms stay more comfortable through long Texas summers.
A tighter, better-insulated opening
Multi-chamber frames, warm-edge spacers and professional sealing help reduce unwanted heat transfer.
Advanced sound-dampening glass
Asymmetrical dual-pane glass and airtight seals can noticeably soften traffic and neighborhood noise.
Smooth operation and a custom fit
Every opening is measured, leveled, squared, insulated and sealed by an in-house installation team.
Clean profiles in modern colors
Choose window styles and finishes that complement your home while improving daily comfort.
Know who is responsible for every window.
Great glass can underperform when installation and service are treated as someone else's job. Our local team stays with you from first measurement through future warranty support.
- One accountable local team
- No third-party installation handoff
- Warranty service handled locally
San Antonio homeowners say it best.
Alex and his crew did a phenomenal job installing energy-efficient windows in our home of 21 years. I highly recommend them.
They replaced 13 windows in one day. The crew did an excellent job and the windows are very impressive.
A great experience from the first phase through installation. The team kept the process professional and easy to understand.

From first question to final walkthrough.
You always know what comes next and who is responsible.
Tell us what you want to improve
A short conversation helps us understand comfort, style and budget.
Get a precise home assessment
We measure each opening and show clear product and financing options.
Your in-house team installs
Certified installers protect your home, fit every unit and clean the work area.
We stay available after the job
Local service and transferable warranty protection provide long-term peace of mind.
Plan your project before the appointment.
Many window sites hide every useful detail behind a form. This quick planner helps homeowners define scope and priorities first, so the consultation starts with better answers.
10 windows with a focus on comfort.
Trusted brands. Recognized performance.
We work with established manufacturers and recognized performance programs so product claims are backed by more than a sales pitch.
ENERGY STAR
Prodigy
NFRC
MI Windows and Doors
Ascend Siding
AAMAReal projects, useful tips and local updates.
Social proof should show the people, products and finished work behind the reviews. Explore the latest directly on our active channels.
InstagramRecent window transformations
See finished projects, frame colors and real San Antonio homes.
View on Instagram
FacebookCustomer stories and project updates
Follow installations, community updates and homeowner feedback.
View on Facebook
YouTubeWindow tips and walk-throughs
Watch product explanations, operating tips and behind-the-scenes clips.
View on YouTubeWindow expertise focused on your community.
Homes across Greater San Antonio face different combinations of heat, glare, noise, architecture and weather exposure. Explore guidance written around the places we serve.
Explore all service areasWindow solutions for historic neighborhoods, growing suburbs and homes exposed to intense urban heat.
Local window guideComfort-focused replacement windows for Hill Country-edge homes facing heat, glare and seasonal storms.
Local window guideEnergy-efficient windows and doors selected for Hill Country sun, views and distinctive architecture.
Local window guideHigh-performance window upgrades for fast-growing neighborhoods and established local homes.
Local window guideWindow replacement designed around comfort, curb appeal and busy northeast metro living.
Local window guideModern window and door options for newer communities, growing families and long-term efficiency.
Local window guideMake a confident decision, even if you are not ready for a quote.
Practical local guidance builds trust and captures homeowners earlier in the research process.
What affects window replacement cost in San Antonio?
Understand window count, style, glass, installation conditions and financing before you compare quotes.
Read the guide Local comfortHow to quiet traffic, aircraft and neighborhood noise
Learn which glass and installation details have the greatest effect on unwanted sound.
Read the guide South Texas guideChoosing windows for heat, sun and sudden storms
A plain-English guide to Low-E glass, frame insulation, seals and weather performance.
Read the guideClear answers before anyone visits your home.
Still deciding? Call a local project specialist and get a straight answer without starting a sales appointment.
(210) 796-9574The cost to replace a window in San Antonio depends on the window's size, style, frame material, glass package and the condition of the opening. Custom sizes, specialty shapes and upgraded Low-E glass add to the price, while replacing several windows in one project can make each unit more efficient to install. A free in-home assessment gives you exact measurements and an itemized quote.
Late fall and winter are often the slower months for window installers, so scheduling can be more flexible then. San Antonio's mild winters make installation practical most of the year, and the bigger cost factors remain window count, style and glass. Planning ahead also gives you time to compare options calmly instead of rushing a decision before summer heat arrives.
The right window replacement company in San Antonio is one that measures every opening, explains glass and frame options clearly and gives you an itemized written quote. Check recent local reviews, ask who performs the installation and who handles service afterward, and compare quotes built on the same products and installation method so the prices are truly comparable.
Buying windows yourself and hiring a separate installer can look cheaper up front, but it splits responsibility for sizing, fit and any later problems between two parties. Replacement windows are custom-measured, and a mis-sized unit or poor seal can cancel out the product's energy performance. One company that measures, supplies and installs keeps accountability in a single place.
Window replacement time depends mainly on how many windows you are replacing, their sizes and styles, and the condition of the existing frames. Custom windows are made to measure, so the full project includes measuring, ordering and installation. Your installation plan and schedule are confirmed with you before work begins, so you know exactly what to expect on install day.
Yes. Current promotional financing offers $0 down and 0% interest for 72 months with approved credit; minimum contract $1,000. Financing lets you replace the windows that matter most now and pay over time instead of waiting through another hot summer. Our San Antonio team can walk you through the application and explain how the plan fits your project.
See what better windows can do for your home.
Schedule a no-pressure assessment with a local expert. We will measure, answer questions and give you clear options.
Tell us about your project.
Share a few details and our local team will follow up to answer questions and schedule your assessment.
