New windows and doors improve comfort, cut energy bills and add long-term value to your home. Westlight Windows San Jose 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
Mr-Glass Window Replacement: The San Jose Owner’s Guide
We stock and install Mr-Glass-compatible replacement windows throughout San Jose, with most single-window replacements running $850 – $1,900 installed depending on size, glass package, and frame condition. Most swaps are completed in one visit, and we carry common Mr-Glass sizes on our trucks. The usual story we hear: a homeowner notices condensation between the panes that won’t wipe away, a crank that spins without moving the sash, or a draft that showed up somewhere around year eight or nine. That’s the sealed unit or the hardware telling you it’s done.
Westlight Windows San Jose is an independent service provider and not affiliated with the Mr-Glass brand. We match Mr-Glass specs because we carry the line as one of eight manufacturers we stock and install.
Which Mr-Glass Models This Applies To
Mr-Glass builds three series we see most often in San Jose homes: the MG-100 single-hung, the MG-200 sliding window, and the MG-300 casement/awning line. Each uses different hardware, and the glass packages differ by series. The fastest way to identify what you have is the sticker on the top edge of the sash when you tilt it inward. Look for the model prefix (MG-1, MG-2, or MG-3) followed by a manufacturing date. The date matters more than most people expect. Mr-Glass changed its balance system on the MG-100 in 2017, so a 2016 unit and a 2018 unit that look identical at a glance use incompatible balances.
On the OEM-versus-aftermarket question: Mr-Glass’s own replacement sashes and sealed units are what we recommend for any window still under its manufacturer warranty period. Outside warranty, quality aftermarket glass from CWS or ES Windows often matches or beats the original spec on low-e performance, and the price difference is real. We’ll quote both and let you decide, because you should know what you’re buying either way. One compatibility gotcha we flag on every estimate: Mr-Glass’s older MG-200 sliders used a 7/8″ glass thickness, while current production runs 1″. An aftermarket sealed unit sized for the newer spec won’t seat properly in the older frame. We measure every opening before we order anything.
Signs Your Mr-Glass Window Replacement Is Failing
- Fog or condensation between the panes. The seal on the insulated glass unit has failed and moisture is getting in. The glass isn’t broken, but the insulating gas is gone and the window’s energy performance is shot.
- Crank handle spins without resistance. On MG-300 casements, this usually means the operator gear stripped. The window still looks fine, but it won’t open or won’t stay open when you let go.
- Sash won’t stay up on a single-hung. The block-and-tackle balance inside the side jamb has broken. This is common after seven to ten years, especially on larger sashes that get opened a lot.
- Visible daylight or airflow around the frame edge. The weatherstripping has compressed to the point it’s no longer doing its job. In San Jose’s dry summers and wet winters, that gap pulls dust and moisture into the track.
- Hard sliding with a gritty feel. The rollers on an MG-200 have worn down or the track is packed with Bay Area dust. You’d be surprised how often a roller replacement makes a “broken” window slide like new.
Replacement Cost & What’s Included
Here’s what we quote for Mr-Glass replacement work in San Jose:
| Job Type | Typical Installed Range |
|---|---|
| Sealed insulated glass unit (IGU) only, standard low-e | $425 – $750 |
| Full sash replacement, stock size | $550 – $950 |
| Single-window full replacement (standard size, vinyl frame) | $850 – $1,400 |
| Single-window full replacement (large or custom size) | $1,200 – $1,900 |
| Hardware-only repair (crank operator, balance, roller) | $180 – $375 |
What drives the range: the size of the opening, whether it’s a stock or custom dimension, the glass package (standard low-e versus impact-rated from PGT or CGI), and the condition of the surrounding frame. If the frame is rotted or out of square, the scope changes, and you’ll know that in the written price before any work starts. Every replacement comes with a written guarantee, and if the work fails within the guarantee period, we come back and fix it at no charge. That’s the Kingswell Guarantee, and it’s on every job we do in San Jose, no exceptions.
DIY or Call Us?
If you’re dealing with a seized crank operator or a sash that won’t stay up, the danger isn’t usually the window itself. It’s working on a ladder or leaning out of an opening while handling a heavy piece of glass. A standard MG-200 sash weighs 35 to 50 pounds. The failure mode that sends people to urgent care is dropping a sash and reflexively trying to catch it. That’s a cut risk, not a scare tactic. Owen Satterfield grew up in the building trades, and even he’d tell you to leave glass work to someone with suction cups and insurance. You can safely check the model sticker, measure the visible glass opening, and take a photo of the hardware before calling us.
That said, if you want to save a service call, call (669) 333-7786 and describe what the window is doing. We’ll give you a straight answer about whether it’s a quick hardware fix or a full replacement, and you’ll get a written price before we start. No door-step surprises.
FAQs
Plan on twelve to eighteen years for the frame and roughly half that for the original sealed glass units, because California’s UV load and temperature swings are hard on seals. A rebuilt or properly replaced unit can go twenty years or more with the right glass package.
Sealed insulated glass can’t be repaired, but the unit itself can usually be replaced without changing the whole window. If the frame and hardware are sound, a glass-only swap is the least expensive fix. Call (669) 333-7786 and we’ll tell you which one your window needs.
Most single-window replacements in San Jose take two to four hours on site, including trim work and cleanup. If we’re replacing glass only, the visit is usually under ninety minutes.
We stock common Mr-Glass glass sizes, balances, and operators on the truck for stock-dimension windows. Custom sizes and less-common MG-300 hardware take one to two weeks to source. We’ll give you the timeline in writing before you commit.
Written by Owen Satterfield, Owner, Westlight Windows San Jose at Westlight Windows San Jose, serving San Jose and nearby areas.
Six Reasons Homeowners Choose Westlight Windows San Jose
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.