Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Ontario, CA
Meridian Windows & Doors is the window company Ontario homeowners call when they want a written price before the work starts, not after. We replace and install windows and patio doors across Ontario, CA, and every job is covered by our 365-Day Done Right Promise in writing. If a window is fogged, a frame has settled, or a patio door no longer slides right, call (817) 686-2228 and we’ll walk you through what the fix will cost.
Why Ontario Homes Are Different
Ontario sits in the Inland Empire’s heat zone, where summer afternoons routinely cross 95 degrees and the dry Santa Ana winds strip moisture from wood frames over time. Homes built from the 1950s through the 1980s, especially in neighborhoods like the Creekside area and along Euclid Avenue, often still have original single-pane aluminum windows. Those frames conduct heat straight into the house and rattle in the wind. Newer subdivisions near the Ontario Ranch and south of the 60 have different challenges: vinyl frames that were quick to install but are now fogged between the panes or binding in the track.
Ontario is a city of established ranch homes and rapid infill, so we see everything from 1960 sliding doors that predate modern energy codes to ViewLux patio doors in homes under five years old. The common thread is that the heat here punishes poor seals and cheap flashing more than coastal climates do. A window that leaks air in Ontario isn’t just uncomfortable; it turns into a $400 summer electric bill.
Our Main Ontario Services
Ontario homeowners call us most about two things: replacing windows that have failed outright, and installing new windows or patio doors as part of larger upgrades. Each has its own page here.
Window Replacement in Ontario
Replacing a window in Ontario usually means pulling an old aluminum or single-pane unit out of a stucco or wood opening and putting in a double-pane, low-E unit that can handle the heat. We measure for exact fit, order the right product from our manufacturer lines, and give you the written price before any work starts. Because many Ontario homes were built before current energy standards, the replacement often improves both the look and the cooling load in one job. See Window Replacement in Ontario for what the job involves.

Window Installation in Ontario
New window installation in Ontario means either windows going into new construction or full-frame swaps in existing rooms. We handle both, and we match the product to the opening rather than forcing whatever is in the warehouse. The heat and dry wind here mean proper flashing matters just as much as the glass itself. For a closer look at how we spec and install new windows in Ontario homes, read Window Installation in Ontario.

Patio Door Installation in Ontario
Ontario backyards get used year-round, which means the patio door takes a beating: dust in the track, warped frames from sun exposure, and rollers that grind to a stop. We install sliding and swing patio doors built for this climate, including ViewLux and PGT lines, and we set them so they open with one hand and seal tight against the Santa Anas. The full scope is on Patio Door Installation in Ontario.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Ontario
We are authorized to install and replace products from eight manufacturer lines, including PGT, CGI, ViewLux, and CWS. That means when a homeowner in Ontario calls about a specific product, we can usually source it without the multi-week delays you get from a shop that only carries one brand. Our brands page lists what we stock and service.
Pricing for Window Company in Ontario, CA
| Service | Typical range in Ontario |
|---|---|
| Single-window replacement (double pane, low-E) | $700 – $1,200 installed |
| Full-home window replacement (10 – 14 windows) | $8,500 – $18,000 installed |
| Window installation (new construction) | $850 – $1,500 per opening |
| Full-frame window replacement | $950 – $1,600 per opening |
| Picture / fixed window replacement | $600 – $1,100 installed |
| Double-hung window replacement | $700 – $1,100 installed |
| Sliding window replacement | $650 – $1,050 installed |
| Patio door installation (sliding) | $1,800 – $3,500 installed |
| Patio door installation (swing / French) | $2,200 – $4,200 installed |
What pushes a price up in Ontario is usually the condition of the opening: rotted framing, stucco that needs patching around the new window, or an older home where the rough opening is no longer square. The price we hand you is the price on the contract. It does not move at the door, and every job is covered in writing for 365 days. If it fails, we come back at no charge.
Neighborhoods We Serve in Ontario
Our crews work throughout Ontario, from the established grid west of Mountain Avenue to the newer subdivisions around Ontario Ranch. We also serve homes along Holt Boulevard, near the 10 and 60 corridors, and in the Creekside and Archibald areas. Response time across Ontario is typically same-week for estimates.
- Creekside
- Ontario Ranch
- Euclid Avenue corridor
- Archibald area
- Holt Boulevard corridor
Service Area – Cities Near Ontario
If you’re just outside Ontario, we also serve Montclair, CA, Claremont, CA, Upland, CA, and Rancho Cucamonga, CA. Scheduling is coordinated from our Inland Empire office, and crews reach Ontario and the surrounding communities directly.
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 Company in Ontario
Yes. When the City of Ontario requires a permit for a window or patio door replacement, we pull it and the installation is done to pass inspection. Our written price includes the permit when one is needed, so there is no surprise line item later. Call (817) 686-2228 to find out if your specific job needs one.
Most homeowners get a free estimate within a few days of calling, and scheduling an installation typically runs a week or two out depending on the product. PGT and CGI custom orders sometimes add lead time from the factory. Call (817) 686-2228 and we’ll give you a realistic date, not an optimistic one.
Ontario’s summer heat and Santa Ana winds punish poor frames and cheap seals, but a properly installed double-pane low-E window holds up well here. That’s why we spec the glass and frame for the actual sun exposure of your house, not a generic California standard. Every install is covered in writing for 365 days.
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Ontario Customers Say
"Installed six replacement windows in a day and a half. Crew was punctual, disciplined, and clean. The owner is a veteran and the standards show."
- Phil R."Patio door replacement. Smooth sliding and a tight seal. Old door hauled away."
- Lena C."Solid install. Scheduling slid by a few days because of weather."
- Mona H.










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