Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Replacement Across San Antonio
Window replacement in San Antonio runs between $650 and $1,900 per window for standard insert installations, with full frame replacements starting around $1,100 and historic restorations in districts like King William or Monte Vista often reaching $3,500 per opening once custom milling and preservation approvals are factored in. Most single-window projects wrap up in one day; whole-home replacements in San Antonio’s older ZIP codes typically span three to five days after materials arrive. If you’re in 78207, 78208, 78209, or 78210 and wondering what your windows will actually cost, call (888) 635-0804 for a written, line-item quote. We’re TruePane Windows & Doors, founded by second-generation glazier Dale Kessler, and we’ve been setting windows true in San Antonio’s historic neighborhoods long enough to know what the black clay does to a jamb.
Why TruePane Windows & Doors Is San Antonio’s Preferred Window Replacement Company
Dale Kessler founded TruePane in 2008 on a rule he still keeps on the whiteboard: if the pane is not true, the job is not done. That rule comes from years of glazing heritage, and it has kept our Window Replacement crews in San Antonio honest on thousands of openings, from vinyl inserts in Government Hill to full-frame restorations in Lavaca. We are not a franchise that parachutes in, and we will not send you a regional call center. A live person answers our phone 24 hours a day, seven days a week, and the voice on the line belongs to someone who knows San Antonio’s preservation codes and soil conditions.
Every technician who walks through your door in San Antonio has passed a background check and wears a uniform. They measure every rough opening twice, quote manufacturer lines side by side on paper, and register both warranty layers before the truck leaves your driveway. Homeowners in Alamo Heights and Terrell Heights have told us the same thing: they called us second, after the first contractor left a fogged seal and a door that bound in July. Then they stopped calling anyone else.
Our Window Replacement in San Antonio work carries the Done Right Promise. If it is not done right, we make it right. No paperwork, no arguing. That promise sits on top of The Keystone Standard, which means your manufacturer warranty is registered in writing, with durations stated, before our truck pulls away. You will have the papers in hand, not an email promise.
We stand behind every pane we set in San Antonio, from the modest rental bungalow off Broadway to the stucco mansions on King William Street. The work is the reputation, and we act like a company that plans to be in this town in thirty years because we do.
Our Window Replacement Services in San Antonio
Full Frame Replacement
When the rough opening itself has rotted or shifted out of square on San Antonio’s black-gumbo clay, pulling the old frame and setting a new one is the only honest fix. Full frame replacement in San Antonio’s 78209 ZIP runs $1,100 to $2,400 per opening depending on size and cladding detail. We strip the opening to the studs, flash it for movement, and rebuild it so the new window operates clean for decades, not seasons. This is the standard fix for homes in Monte Vista and Government Hill where the original 1940s frames have racked past what an insert can correct.

Insert Window Replacement
If your existing frames are square and sound, an insert replacement fits a new window into the old opening without disturbing interior trim or stucco. San Antonio homeowners in 78208 and 78210 typically pay $650 to $1,400 per insert, depending on glass package and frame material. We set inserts often in the post-war brick houses scattered between the historic districts, where the frames are solid but the single-pane glass has failed. The job goes quickly, usually one day for several windows, and we leave the house cleaner than we found it.

Storm Window Replacement
After Winter Storm Uri pushed San Antonio into single digits in February 2021, thousands of homeowners discovered their old storm windows were the only thermal break they had, and many of those were cracked or warped. Storm window replacement in San Antonio runs $280 to $750 per unit. We fit low-profile aluminum or wood storm sashes over original historic windows where full replacement would require a Certificate of Appropriateness and a much longer timeline. It is a practical bridge for Lavaca and King William homeowners who want better efficiency now while they plan a full restoration later.

Energy-Efficient Upgrade
San Antonio summers routinely exceed 100°F, and the UV load on the Balcones Escarpment degrades low-quality vinyl frames within a few summers. An energy-efficient upgrade means dual-pane or triple-pane low-E units with argon fill, properly flashed and sealed for this climate. Homeowners in the 78207 through 78210 corridor typically invest $800 to $2,000 per window for a serious thermal and UV upgrade. The return shows up on CPS Energy bills in August, and your furniture stops fading by the south-facing transom.

Historic Window Restoration
In King William (78204), Monte Vista (78201), Government Hill (78208), and Lavaca (78210), virtually every window replacement requires a Certificate of Appropriateness from San Antonio’s Office of Historic Preservation before work can legally proceed. That approval layer is routine here, at a density you will not find in Austin or Houston. We know the review process, we know the reviewers, and we have restored original 1920s wood sashes across this corridor. Expect $1,600 to $3,500 per opening for a true restoration with custom-milled jambs and period-correct glass, and expect us to have the COA in hand before we order a single pane.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in San Antonio
TruePane is an authorized installer for more than a dozen manufacturer lines, and San Antonio homeowners hear specific names when we quote: CGI, PGT, and ES Windows among them. We stock parts and hardware for local inventory on the lines San Antonio’s homes actually use, which cuts turnaround when a sash or balance fails. On high-end projects we quote ECO Window Systems and CWS side by side on paper, so you see exactly what you are buying and what each layer of warranty covers. No vague “premium line” language, just manufacturers and model numbers.
Common Window Replacement Problems We See in San Antonio Homes
- Fusion-weld failures in cheap vinyl. San Antonio’s UV load will degrade low-quality vinyl frames and the fusion-welded corners start pulling apart, which kills the insulating seal within a few summers. A cheap catalog replacement that works in Ohio will be fogged in San Antonio before the warranty lapses.
- Binding sashes on black-gumbo clay. A jamb that is perfectly plumb at install binds the sash within two seasons on the expansive clay beneath the 78201-78210 corridor. Homeowners mistake normal seasonal racking for a warranty defect. It is not. It is the soil moving, and experienced San Antonio contractors quote trim-back and re-shimming as an expected return visit.
- Hidden moisture rot behind stucco. Missing or improperly lapped flashing tape at stucco window heads traps moisture behind hard coat, rotting the rough opening before any visible interior damage appears. We open up San Antonio stucco reveals and find this often on Spanish Colonial Revival homes where the original flashing was tar paper, not modern peel-and-stick membrane.
- Fogged IGUs from thermal shock. San Antonio’s swing from 100°F summer afternoons to single-digit arctic intrusions like Uri in 2021 puts massive stress on insulated glass units. Low-quality seals fail within a few years, leaving condensation between the panes. Once the gas is gone, the window is just two pieces of glass pretending to insulate.
Pricing for Window Replacement in San Antonio, TX
Here are honest ranges for San Antonio’s market. Insert replacements: $650 to $1,400 per window. Full frame: $1,100 to $2,400. Storm windows: $280 to $750. Historic restoration with COA and custom milling: $1,600 to $3,500. Energy-efficient dual-pane or triple-pane upgrades: $800 to $2,000 per unit. What moves the number is the glass package, frame material, and whether the rough opening needs structural shimming for expansive clay movement. We also honor a standing 5% discount for seniors and veterans, and take a free written repair estimate. The quote we write is the price you pay. Fixed, in writing, before we order anything. Call (888) 635-0804 to schedule a free, no-pressure estimate at your San Antonio home.
One Local Insight That Changes How San Antonio Window Replacement Works
In the 78201-78210 corridor, virtually every window replacement in King William, Monte Vista, Government Hill, or Lavaca requires a Certificate of Appropriateness from San Antonio’s Office of Historic Preservation before work begins, a review layer absent at this density in Austin or Houston. On the same job, the Balcones Fault Zone’s expansive black-clay soils heave and settle seasonally, so a window or door that fits perfectly at install will be out of square within a few seasons unless the rough opening is shimmed and flashed for movement. Contractors who do not understand both layers, the preservation bureaucracy and the moving earth, will either violate the historic code or set a window that binds by the second summer. We handle both on the same visit, because in San Antonio they are the same job.
We replaced a pair of original double-hung sashes in a 1920s Spanish Colonial Revival on King William Street. The stucco heads had hidden moisture intrusion behind failed flashing tape, and the old single-pane wood sashes were racked 3/8 inch out of square from the gumbo clay. Our crew milled custom jambs to match the original profiles, installed low-E argon-fill insulated glass units in the existing frames, and re-flashed the heads before the stucco patch. The Certificate of Appropriateness was in hand before we ordered the glass. That is how San Antonio work gets done right.
We Also Serve Cities Near San Antonio
TruePane runs crews into the communities around San Antonio regularly: Lackland A F B, Kelly Usa, Converse, and Adkins all sit within our normal route. If you are just outside the city line and need the same square deal, same written warranty registration, and same straight answers on pricing, call the same number. We will be there when we say.
Serving San Antonio, TX - Our Local Coverage Area
We’re based in the San Antonio area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Window Replacement in San Antonio
No, you can get a quote first. But the work cannot legally begin until San Antonio’s Office of Historic Preservation issues a Certificate of Appropriateness, and a competent contractor will factor that timeline into your schedule and price. We quote King William and Monte Vista projects with the COA process built in, not as a surprise line item. Call (888) 635-0804 and we will walk you through it.
Binding sashes on a two-year-old window in San Antonio are almost always caused by expansive black-gumbo clay moving the rough opening, not a manufacturing defect. The soil swells when wet and shrinks in drought, racking the frame 1/4 to 3/8 inch seasonally. We shim and flash for this movement at install, and we quote trim-back and re-shimming as a normal maintenance visit when it appears later. Call (888) 635-0804 to have us look at it.
Look for condensation or fog between the panes, not on the room side of the glass. That means the seal has failed and the argon has escaped. In San Antonio’s heat, a failed IGU is just two pieces of glass with a dead air pocket, and your cooling bill is paying for it. We can test the glass and replace the failed unit without replacing the whole window in most frames.
Yes, in many San Antonio homes we do exactly that. If the wood sash is structurally sound, we can route it to accept modern low-E insulated glass, replace the weatherstripping, and rebuild the weight-and-pulley system or convert to replacement balances. This is the standard approach for the Craftsman bungalows and Spanish Colonial Revivals in the 78201-78210 corridor. It also satisfies the Office of Historic Preservation requirements that a full replacement would not.
High-end manufacturers build to order, and in custom sizes for San Antonio’s non-standard historic rough openings, that is a six-to-twelve-week production run before shipping. Labour is not the bottleneck. Glass is not even the bottleneck. The factory queue is. We order the moment the quote is signed and the COA is in hand, and we will tell you the lead time honestly before you commit. The price is fixed in writing before we order anything.
Call (888) 635-0804 for a free estimate on window replacement in San Antonio. A live person answers, and the quote is line-item, fixed, and in writing before you sign anything.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving San Antonio with straight answers and true panes since 2008.



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