Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Before
After
Before
After
Before
AfterFast, Reliable Window Installation Across Ontario
Window installation in Ontario, CA means dealing with the inland sun, stucco walls, and housing stock that mostly went up before 1990. We scope every job around those realities, not around a generic checklist. The biggest factor in Ontario is solar heat gain through west- and south-facing glass, so the right low-E coating and frame material changes how a house feels in August. If you’re looking at failed single-pane aluminum windows or fogged insulated glass, call (817) 686-2228 and we’ll put a written price on paper before any work starts.
Key Takeaways:
- Most Ontario homes we see have single-pane aluminum frames or failed insulated glass from the 1970s-1980s build boom.
- Solar heat gain, not coastal wind load, is the spec driver here. Low SHGC low-E glass is the smart upgrade in Ontario.
- Every job gets a written price before work starts, covered by our 365-Day Done Right Promise.
- We install and service ViewLux, PGT, and CWS product lines, among eight manufacturers we carry.
Why Meridian Windows & Doors Is Ontario’s Preferred Window Installation Company
We’re part of the Garrison Partners family, operating to The Garrison Standard since 2009. That means every crew member shows up background-checked and in uniform, every job gets a written quote, and every installation carries a 365-Day Done Right Promise in writing. If something isn’t right within the first year, we come back at no charge. That’s the whole deal, and it applies to every window we install in Ontario.
Our dispatch and scheduling are coordinated from the Inland Empire office, so crews serve Ontario locally. You won’t wait on a scheduler in another state. You call, a live person answers, and we book the estimate. That live-person phone coverage runs 24/7, every day of the year. When you’re comparing window installation companies in Ontario, ask the others how their phones are answered at 9 p.m. on a Saturday. Then call us.
Picture Window in Ontario
A picture window in Ontario is usually a fixed, non-operable unit that gives you a clean view without the frame breaks of a slider or hung window. We see a lot of these on 1960s and 1970s ranch homes off Euclid Avenue and around the Ontario Town Square area, where a west-facing picture window has been cooking in afternoon sun for decades. The job means removing the old unit, checking the rough opening for rot or water damage, correcting the frame if needed, and setting a properly flashed and sealed replacement. Most picture window replacements in Ontario run $700 to $2,200 installed, depending on size and glass package. If the rough opening is non-standard, the unit is custom-ordered and the price reflects that before we touch the wall.
Sealing the Stucco-to-Frame Gap
Ontario’s older homes are almost all stucco-clad, and the failure point is nearly always the junction between the stucco and the window frame. We flash and foam every jamb on a picture window replacement, not just caulk the outside bead. That’s the difference between a window that holds up for 20 years and one that leaks at the first winter rain.
Low-E Glass for West-Facing Walls
If your picture window faces west or south in Ontario, you’re absorbing direct inland sun for hours every afternoon. We spec low-E glass with a low SHGC (solar heat gain coefficient) so heat reflects back outside while light still comes through. The difference in a west-facing bedroom is noticeable the same week we install.
Bay Window Installation in Ontario
Bay window installation in Ontario typically happens on homes where an existing flat window is being pushed out to add floor-level light or a reading nook. The structure extends past the exterior wall, which means the opening gets rebuilt, the roof section above it gets flashed, and the cantilever gets proper support. We recently replaced a set of failed single-pane aluminum sliders and a drafty picture window on a 1970s ranch home off Euclid Avenue near the Ontario Town Square area. We upsized the opening, installed a new low-E insulated glass picture window and a double-hung, and foamed and flashed every jamb to seal the stucco-to-frame gap. The homeowner immediately noticed the west-facing rooms held temperature better and the street noise off Euclid dropped noticeably.
Bay window installation in Ontario runs $2,800 to $6,500 installed for a three-section unit, depending on width, glass package, and whether the existing foundation edge needs additional support. We put that number in writing before we begin.
Structural Support and Roof Flashing
A bay window carries weight differently than a standard replacement. The seat board has to be anchored into the existing framing, and the roof cap above it needs metal flashing that ties into the wall. Skipping that step is how bay windows sag and leak in Ontario’s stucco homes. We do both, and the workmanship is covered by the 365-Day Done Right Promise.
Custom Sizing for Pre-1990 Openings
Most Ontario homes were built before 1990, and rough openings from that era don’t match stock sizes. We don’t order a stock-size unit and hope it fits. We measure to the eighth inch, order a custom unit when the opening demands it, and schedule the install around the lead time. That avoids the re-order delay and the framing change that blows up someone’s calendar.
Trusted Brands We Service in Ontario
We’re authorized to install and replace products from PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. For Ontario homeowners, that means we’re not pushing one brand because it’s what happens to be on the truck. We carry local parts stock for ViewLux, PGT, and CWS lines, so service calls and replacement hardware don’t get stuck waiting on a warehouse shipment. The right window is spec’d for the opening and the sun exposure, not the one that’s easiest to source. A meridian is a fixed line you measure everything against. That’s what the name means and how we run every install.
Common Window Installation Problems We See in Ontario Homes
- Water intrusion at the sill and jamb on stucco homes. When the old aluminum frame isn’t properly flashed and sealed during replacement, rain finds the gap between stucco and frame. We strip that area down, flash it correctly, and seal the jamb before the new unit goes in.
- Failed insulated glass units on west-facing elevations. 1980s builder-grade windows get cooked by afternoon sun in Ontario, and the seal between the panes breaks down. The result is fog between the glass that can’t be wiped off. That’s a full unit replacement, not a repair.
- Mis-scoped rough openings. Ordering a stock-size unit for a pre-1990 opening that needs a custom fit forces a re-order or a framing change that kills the schedule. We measure and order to the actual opening, and the written price reflects that upfront.
- Drafty single-pane aluminum frames. These were the default in Ontario’s 1960s-1980s housing stock. They conduct heat straight into the house in summer and out in winter. Replacing them with insulated frames and low-E glass is the single biggest upgrade we do here.
Pricing for Window Installation in Ontario, CA
Here are honest ranges for Ontario’s market. A standard single-window replacement runs $450 to $1,400 installed. A picture window runs $700 to $2,200. A bay window runs $2,800 to $6,500. A full-home replacement on a 1,500-square-foot Ontario ranch typically lands between $9,000 and $22,000 depending on window count, frame material, glass package, and whether the openings are standard or custom. What moves the price is glass spec (low-E, impact, or basic), frame material, and the condition of the rough opening once we expose it. The price goes on paper before we begin, and it does not move at the door. Call (817) 686-2228 for a free written estimate.
We Also Serve Cities Near Ontario
Our crews handle Window Installation work throughout the surrounding Inland Empire, including Montclair, Claremont, Upland, and Rancho Cucamonga. If you’re in one of those cities, the same written pricing and 365-Day Done Right Promise apply. For the full local breakdown, see Window Installation in Ontario.
Serving Ontario, CA - Our Local Coverage Area
We’re based in the Ontario 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 About Window Installation in Ontario
Yes, Ontario requires a building permit for window replacement when the opening size changes or structural work is involved, like a bay window install. A simple same-size replacement may not need one, but we verify with the city’s building department before we schedule the work. Pulling the permit is part of the job, and we handle it so the inspection is passed properly. Call (817) 686-2228 for an exact quote on your project, permit included where required.
Most single-window replacements in Ontario take one day on site, once the unit is in hand. A bay window or any opening that requires framing changes takes two to three days. Custom-ordered units add lead time, typically two to four weeks depending on the manufacturer. We put the calendar in writing on the estimate so you can plan around it.
The honest answer: the condition of the rough opening once the old window comes out. If there’s rot, termite damage, or a stucco-to-frame gap that wasn’t visible before removal, the repair work adds cost. We walk you through that before it happens, in writing, and you approve the change before we do it. The base price on your written estimate is the price. Call (817) 686-2228 to get a number on paper first.
Yes, and for Ontario specifically it’s the most important glass upgrade you can make. Inland sun means west- and south-facing windows absorb heat for hours daily, and low-E glass with a low SHGC reflects that heat back outside. The drop in cooling load is measurable in summer, and the added cost is modest compared to the energy savings over the life of the window.
We service and install ViewLux, PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. For Ontario homeowners, that means the right product for the job, not whatever’s in the warehouse. We also stock local parts for ViewLux, PGT, and CWS so warranty work and hardware replacements don’t stall. Call (817) 686-2228 and we’ll spec the right window for your opening and sun exposure.
For a free written estimate on window installation in Ontario, call (817) 686-2228. The price goes on paper before any work starts, and every installation is covered by our 365-Day Done Right Promise in writing.
Written by Elliot Vance, Owner at Meridian Windows & Doors, serving Ontario since 2009.