New windows and doors improve comfort, cut energy bills and add long-term value to your home. Westlight Windows San Diego pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
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.
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.
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 San Diego Owner’s Guide
In San Diego, installing a Therma-Tru window typically runs $850 – $2,400 per window depending on size, frame condition, and whether it’s a retrofit or full-frame replacement. We carry Therma-Tru-compatible window installation parts on the truck and can usually handle the swap in a single visit when the opening is in decent shape. Most San Diego homeowners discover a problem the same way: the sash starts sticking in the track, a corner of the frame shows moisture staining, or the tilt-in mechanism stops locking. By the time it’s obvious, the part has usually been failing for six months or more.
Which Therma-Tru Models This Applies To
Therma-Tru’s window line covers a tighter range than their door systems, but the compatibility gotcha most people miss is this: the hinge and balance hardware differs between their single-hung and casement lines, and you cannot swap parts between them. Single-hung models use a block-and-tackle balance that’s sized by sash weight, while casement units run on a four-bar hinge with specific arm lengths. If you look at the window’s lower corner, you’ll find a small white serial label starting with “TT” followed by a model code. Write that down before you call anyone. We match the label to the OEM part. Aftermarket replacements exist and some are fine, but we’ve pulled cheap aftermarket balances out of Therma-Tru frames that wore out in two years. When the price difference is twenty or thirty dollars, we recommend the OEM part every time.
Signs Your Therma-Tru Window Installation Is Failing
- Sash won’t stay up or is hard to lift: The balance system has lost tension. In coastal San Diego neighborhoods like Point Loma and La Jolla, salt air accelerates wear on the internal springs, so we see this five to six years sooner than inland.
- Hinge arms feel loose or the sash sags when open: Casement hinge hardware has worn bushings. Left alone, the sash starts dragging against the frame and eventually chips the corner of the glass.
- Water staining at the bottom corners of the interior trim: The installation flashing or the window’s internal weep system isn’t moving water out. This is more common on north-facing walls in San Diego where rain hits directly.
- Cold draft near the sash edges even when locked: The weatherstripping has compressed beyond recovery. San Diego’s sun degrades the rubber compound faster than the cold would in other climates.
- Lock or tilt mechanism feels gritty or won’t engage: Sand and dust build up in the hardware track. We see this most often in east-county areas like El Cajon and Santee where it’s drier.
Replacement Cost & What’s Included
Most Therma-Tru window installations in San Diego land between $850 and $2,400 per window. A straight sash balance replacement runs at the lower end. A full-frame replacement with new flashing, trim work, and disposal hits the upper end. What drives the range in San Diego specifically is the condition of the rough opening once we open the wall: older bungalows in Mission Hills and North Park frequently have dry rot hiding behind the trim, and that’s where a $900 job becomes a $1,800 job honestly. We don’t play games with that. You get a written price before any work starts, and it includes the part, labor, cleanup, and haul-away. If the repair fails within the guarantee period, we come back and fix it at no charge. That’s the Kingswell Guarantee and it’s in writing on every job.
DIY or Call Us?
A homeowner can safely check a few things: whether the sash is seated correctly in its track, whether the lock engages, and whether visible hardware is loose. Past that point, I’d tell you to stop. Window balances are under tension, and releasing one incorrectly can send the sash or the balance mechanism flying. Casement hinges carry the full weight of the sash, and if you unclip one without supporting the window, you’re holding a sheet of glass with nothing but luck. We’ve fixed plenty of DIY attempts in San Diego where someone watched a video and ended up with a cracked sash or a broken lock. If you’re seeing any of the signs above, call us at (619) 793-3829. We’ll tell you over the phone whether it’s worth a service visit.
FAQs
In San Diego’s climate, expect 15 to 20 years from OEM balance systems and hinges before they show significant wear. Coastal exposure shortens that to 10 to 15 years on average. The sun and salt air do most of the damage, not temperature swings. Call (619) 793-3829 for an exact quote on your window; estimates are free.
Usually not. Balance systems and hinge hardware are sealed units and once the internal springs or bushings wear, there’s no practical repair. We’ll tell you if yours is the exception. Call (619) 793-3829 and we’ll walk you through what you’re seeing.
Most single-window Therma-Tru part replacements take two to three hours on site. Full-frame installations run four to six hours. We give you a committed arrival window, not a vague “sometime Tuesday.” Call (619) 793-3829 to schedule a free estimate.
We keep common Therma-Tru balance systems, hinge sets, locks, and weatherstripping stock on our service vehicles for San Diego jobs. Less common sizes are ordered and usually arrive within three to five business days. Along with Therma-Tru, we also stock parts for PGT, CGI, and CWS window lines. Call (619) 793-3829 with your model code and we’ll confirm whether we have your part on hand.
Get Your Therma-Tru Window Fixed the Right Way
Owen Satterfield grew up helping his uncle rehang doors that never sat quite right, and he’s spent the years since learning every window and door system a California house can throw at him. That’s why Westlight Windows San Diego doesn’t do vague quotes or door-step revisions. We measure it right, say what it costs, show up when we said we would. The rest takes care of itself. If you’ve got a Therma-Tru window in San Diego that’s sticking, leaking, or sagging, call (619) 793-3829 for a free estimate. We’ll put the price in writing before any work starts.
Written by Owen Satterfield, Owner, Westlight Windows San Diego at Westlight Windows San Diego, serving San Diego and nearby areas.
Six Reasons Homeowners Choose Westlight Windows San Diego
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
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.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.