New windows and doors improve comfort, cut energy bills and add long-term value to your home. Juniper Windows Austin pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
1. Choose your installer
The unit is half the job - the install is the other half. Our own background-checked crews measure, set, seal and insulate every opening, and they know the lines we quote inside and out because they install them every week.
2. Select the right products
Compare styles, materials and glass packages side by side until the fit is right for your rooms, your budget and your goals. The product-line comparison below is the place to start.
3. Prepare your home for install
Before install day we walk you through a short checklist - furniture pulled back, treatments down, a clear path to each opening - so install day is watch-it-happen, not scramble.
Compare the Lines We Quote
Every project is priced on the same lines, side by side - the price indicators below are relative, and your consultant shows exact numbers on your actual openings.
PGTThe line Florida homeowners arrive naming - the most Miami-Dade certifications in the industry$$$
- More Miami-Dade NOA certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe Florida value pick$$
- Vinyl systems built in Florida for Florida codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Miami-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
Therma-Tru Window Installation: The Austin Owner’s Guide
We stock and install Therma-Tru-compatible window units across Austin, with most residential installations running between $450 and $1,200 per window depending on size, frame condition, and glass package. Same-week scheduling is typical for straightforward swaps, and yes, we bring the specific Therma-Tru hardware and flashing to the first visit. Most owners realize something’s wrong when they notice condensation trapped between panes, a sash that binds on one side, or a frame corner that’s quietly pulling away from the rough opening after a few Texas summers.
We’re an independent Austin window and door company, not a Therma-Tru dealer or affiliate. That matters because it means we match the right unit to your opening without being married to any one product line. We carry Therma-Tru-compatible parts alongside PGT, CGI, and CWS inventory, so if a Therma-Tru unit isn’t the smart money for your situation, we’ll tell you that before you spend it.
Which Therma-Tru Models This Applies To
Therma-Tru’s residential window lines span several series configurations, and the compatibility gotcha most owners hit is this: the frame profile on a Therma-Tru sliding window is not interchangeable with their casement or double-hung hardware, even when the glass dimensions match. The part number stamped on the spacer bar or the corner of the frame is the quickest identifier, but if that’s faded or painted over, we measure the rough opening, the frame depth, and the glazing bead profile to pin down what actually fits.
When you’re replacing a Therma-Tru window rather than repairing a component, the OEM-versus-aftermarket decision comes down to glass performance and warranty continuity. OEM Therma-Tru units keep the original U-factor and SHGC ratings intact, which matters if you’re trying to hold onto a builder-era energy package. Quality aftermarket equivalents from our other stocked lines can match or beat the original glass at a lower price point in some sizes, especially on older constructions where the opening isn’t perfectly square anymore. We’ll show you both numbers before you commit.
Sean Mackey has been straight with Austin homeowners about this exact tradeoff for years. His rule is simple: “If the numbers don’t back it up, I’m not going to sell it to you.”
Signs Your Therma-Tru Window Installation Is Failing
- Sash binds or drags on one side. Austin’s clay soil shifts with drought and rain cycles, and that movement transfers to window frames. A Therma-Tru unit that’s out of square will bind at the top corner first, usually on the side toward the house’s foundation stress point.
- Condensation or haze between the glass panes. The seal on an insulated glass unit fails eventually, especially on west-facing walls that catch full afternoon sun through Austin’s 100°F summers. Once the desiccant inside the spacer bar is saturated, the haze is permanent and the only fix is new glass or a new sash.
- Visible daylight or drafts at the frame joint. The caulk and flashing at the perimeter break down faster on the south and west elevations here. If you can see light through a closed window, water is finding the same path.
- Soft or swollen wood at the sill corners. Therma-Tru frames hold up well, but the rough opening around them doesn’t always. Sill rot at the corners is the most common installation failure we see on older Austin homes, and it usually means water has been pooling behind the exterior trim for a while.
- Glass rattle on windy days. Loose glazing beads or worn weatherstripping let the glass unit shift inside the frame. It’s a small symptom that becomes a full frame issue if the unit starts flexing under wind load.
Replacement Cost & What’s Included
A Therma-Tru window installation in Austin typically lands between $450 and $1,200 per window, parts and labor, with the spread driven by three things: glass package, frame size, and the condition of the existing rough opening. A standard double-pane slider in a clean opening sits at the low end. A larger fixed or casement unit with low-E coated glass, or any job that requires reframing a rotted rough opening, lands toward the top.
| Work scope | Typical installed range per window |
| Standard double-pane slider, clean opening | $450 – $650 |
| Double-hung or casement, low-E glass | $600 – $900 |
| Large fixed or specialty size, low-E glass | $800 – $1,200 |
| Rough opening repair (sill or jamb rot) | $150 – $400 additional |
Every price is written before we start. You’ll see the unit cost, the labor, the flashing, and any rough-opening repair separated line by line. The 365-Day Done Right Promise covers the installation for a full year, parts and labor, in writing. If the work isn’t right, we make it right.
DIY or Call Us?
You can safely check a few things yourself: run a dollar bill along the weatherstripping to find gaps, look for cracked caulk at the exterior frame, and note which direction the window faces so we know what sun load it’s taking. That’s useful information to have on the phone.
What you shouldn’t do is pull the frame or attempt a full unit swap on your own. A Therma-Tru window is shimmed, flashed, and sealed into the rough opening, and getting the drainage plane wrong means water ends up inside your wall. We’ve seen Austin DIY replacements where the new window worked for six months before the drywall below it started staining. By that point the repair cost doubled. The flashing detail and the reveal line are where installation quality actually lives, and that’s what you’re paying a crew to do right. Call (325) 420-1750 and we’ll give you a written number for the full job.
FAQs
Expect 15 to 25 years from the frame and hardware, with the insulated glass seal failing earlier, often between 10 and 18 years on sun-exposed elevations in Central Texas. West-facing windows with full afternoon exposure tend to fail on the shorter end. Call (325) 420-1750 for an honest assessment on your specific unit.
Sometimes, and we’ll tell you straight which way the numbers go. Glass-only replacement, weatherstripping, and hardware swaps are all doable. If the frame itself is out of square or the rough opening is compromised, a full replacement is the better spend. Call (325) 420-1750 and we’ll quote the repair honestly.
A typical single-window replacement takes one crew a half-day on site, with most of the work being careful flashing and sealing rather than the drop-in itself. Full-home packages in the Austin area run several days depending on access and rough-opening condition. We’ll give you a written timeline before the job starts.
We stock common Therma-Tru-compatible hardware and glazing supplies, and we order exact OEM glass units and frames per job when the measurements call for it. For Austin-area installations, most parts arrive within a week. Call (325) 420-1750 and we’ll confirm what’s needed for your specific window.
Written by Sean Mackey, Owner, Juniper Windows Austin at Juniper Windows Austin, serving Austin and nearby areas.
Six Reasons Homeowners Choose Juniper Windows Austin
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.