Ontario Window Replacement: Home Windows, Patio Doors and Commercial Storefront Glass
Expert residential and commercial window services. Two crews, two estimating methods, and a quote that tells you which one you are reading.
- ✓Licensed & Insured
- ✓Houses and Storefronts, Quoted Separately
- ✓Free Measure, Residential or Commercial
- ✓Se Habla Español
Ontario Window Replacement installs and replaces windows, patio doors, entry doors and storefront glass across Ontario, California. On the residential side that means vinyl, fiberglass and clad-wood units with low-E insulated glass, set either in a retrofit block frame or in a full nail-fin opening. On the commercial side it means center-set aluminum storefront framing, tempered and laminated lites, and aluminum entrance doors carrying the hardware a business actually needs.
The two are not one trade wearing different shirts. A house is quoted per opening and permitted over the counter. A suite on Holt Boulevard or a front office off Vineyard Avenue is quoted by glazed square foot and framing linear foot, plan-checked, and inspected against a different chapter of the code. Its glass is often a special order with a lead time measured in weeks rather than days.
Ontario has a distribution economy sitting next to eighty years of housing, and both of them need glass. We estimate the two separately, permit them separately and warranty them separately. Every page on this site tells you which of the two it is describing before it tells you anything else about the product.
Why Ontario Chooses Ontario Window Replacement
- ✓Two estimating methods, and the quote says which one you are reading. Residential is per opening. Commercial is glazed square foot plus framing linear foot, with the after-hours premium shown on its own line instead of buried in a unit price.
- ✓We hold the CSLB C-17 glazing classification, the one that covers commercial glass. A great deal of residential window work in this region is sold by outfits that cannot legally glaze your storefront, and they rarely volunteer that.
- ✓Warranty documents are never merged. A house gets the manufacturer's residential terms. A commercial opening gets the commercial terms, which are shorter, and we would rather explain why now than have you find out in year eleven.
- ✓Permit path stated before you sign. Residential retrofit is usually over the counter. Commercial can mean plan check, an accessibility review of the path of travel, and an inspection sequence that quietly decides your schedule.
- ✓Same-day secure board-up on broken commercial glass, with the replacement lite ordered that afternoon. A boarded opening you can still trade out of beats a fast promise nobody can keep on a fabricated unit.
- ✓We will talk you out of the job when the job is wrong. A fogged sealed unit in a sound frame gets new glass, not a new window, and we quote it that way even though it is the smaller invoice.
About Ontario Window Replacement in Ontario, CA
Ontario Window Replacement works the West End of the Inland Empire out of Ontario, California, and does two different jobs under one license. One is replacing windows and doors in houses built between the citrus era and the last subdivision boom. The other is glazing tenant spaces, front offices and retail suites in a city whose economy runs on distribution.
We keep them apart on purpose. The residential estimator carries a moisture meter and a sill probe. The commercial estimator carries a profile gauge and asks who holds the lease, because that answer decides who is even allowed to authorize the work. Blending the two produces the quotes we get called in to correct, where a business owner has been promised a homeowner's warranty on a public entrance that will see two hundred cycles a day.
There are jobs we tell people not to give us. If your windows are twelve years old, the frames are sound and one sealed unit has fogged, replace nothing. Have the glass swapped inside the frame you already own.
If a landlord is obligated to repair the storefront under the lease, get that in writing before you pay anybody, us included. And if the only reason to replace is a promised energy saving, the payback on a sound window is long enough that we would rather you spent the money on attic insulation.
Ontario Window: Every Service
Full Window Replacement
A whole-house job is a contract before it is a building project, and most of what goes wrong later was decided by what the paperwork failed to say. A single total with the words all windows written beside it is not a scope of work.
Residential Window Installation
Anchoring gets decided in ten seconds and lived with for thirty years. What the screws pass through, what they land in, how many there are and how hard they are driven is the difference between a window that holds and one that works loose.
Commercial Window Installation
This is the page the rest of the site keeps pointing at. Ontario runs on distribution, retail and light industry, and the glass at the front of those buildings is a separate market with its own pricing, its own permits and its own warranty terms.
Energy-Efficient Window Installation
A window label rates the whole assembly, frame and spacer included, never the glass on its own. In Ontario, Climate Zone 10, that assembly has to show a 0.30 U-factor and a 0.23 SHGC to satisfy the 2025 Energy Code on a replacement job.
Vinyl Window Replacement
Vinyl is the correct answer for most houses in Ontario and the wrong answer for almost every storefront. That sentence is the whole page, but the reasons behind it decide whether you get a window that lasts thirty years or one that sags in eight.
Wood Window Replacement
Clad-wood is the only window we sell for a reason that is not technical. You buy it because you want wood on the inside of the room, and everything else about the product is engineering built to make that survivable outdoors.
Aluminum Window Replacement
Most people searching for aluminum windows in Ontario are not shopping for them. They are trying to name the frames they already have, usually because a slider has stopped sliding.
Bay and Bow Windows
Replacing a bay costs what it costs because of the carpentry, not the glass. What projects off your wall is a framed box with a roof, a seat and a support system, and all four of those age faster than the glazing sitting in them.
Broken Window Glass Installation
Where only the glazing has failed and the surround is undamaged, you want a lite cut to size and a bead of sealant. That is a trade counter job at trade counter money.
Casement Window Replacement
A casement seals better than anything else we install, because the sash is pulled against a compression gasket by the lock rather than sliding past a brush. If your priority is a tight house, this is the window.
Custom Window Installation
A lot of Ontario's tract housing from the late eighties onward put a half-round transom over the front door and a clipped corner on the stair landing. Those shapes are the reason this page exists, and none of them come off a shelf.
Double-Pane Window Replacement
Double pane is the baseline. It is what essentially every replacement window sold in Ontario already is, and someone asking for it is usually after a normal window rather than an upgrade.
Egress Windows
An egress window is not a product you order. It is a dimension you have to hit, and the reason this page exists is that most people first hear about it when a garage conversion or an added bedroom fails inspection.
Fiberglass Window Replacement
Fiberglass is worth paying for on two kinds of opening: the long span and the dark one. On the rest of a West End house it is money spent where nothing is at risk, and we would rather set that out than sell up.
French Doors
A pair of French doors gives you the entire opening rather than half of it, and it looks better than a slider from every angle. It also has three times as many things that can bind, drop or leak, and it demands more from the wall it sits in.
Impact Window Installation
We are going to argue against half of what this page is usually used to sell. Ontario is fifty miles inland in San Bernardino County.
Low-E Glass Window Installation
There are two kinds of Low-E coating and they are made in completely different ways. Which one you are being quoted decides what the glass can do and even where it can be used, and almost no proposal in this city says which.
Multifamily & HOA Window Replacement
Before anybody prices a window on a complex, one document needs reading. The paperwork recorded against a development splits it into parts, and a window can belong to either one of them.
Office & Commercial Glazing
A large part of the office glazing in this city looks into a warehouse rather than out at the street. A front office or a mezzanine suite with glazing onto the working floor is a standard arrangement here, and it asks questions ordinary office glass does not.
Retrofit Windows
Retrofit and full-frame are not two products. They are two ways of putting the same window into your wall, and on most Ontario houses the right answer is one of each, chosen opening by opening rather than sold to you as a single package price.
Sliding Window Door Replacement
More than half the windows in Ontario slide sideways. Tract builders here have used the horizontal slider for sixty years because it is cheap, it needs no swing clearance, and it fits the wide short openings that postwar floor plans favor.
Soundproof Window Installation
Acoustic glass is sold by the house and it should be bought by the room. That is the single most useful thing on this page, and it is the opposite of how the category is quoted.
Storefront Window Installation
There are two ways a storefront gets built, and the fork comes at order stage rather than on site. Either the aluminum turns up as lengths to be cut and put together inside your opening, or it turns up as completed frames with the glass already in them.
Triple-Pane Window Installation
Ontario gets cold nights, and that is why people here ask about triple glazing. Cold nights are not a heating season.
Commercial Storefront, Entrance and Tenant Improvement Glazing in Ontario
Ontario's building stock is not mostly houses. It is warehouse front offices, multi-tenant retail along Holt Boulevard and Fourth Street, medical and professional suites, restaurants, and light industrial buildings around the airport and out toward Guasti.
That work is priced by glazed square foot and framing linear foot rather than by the opening, and it is inspected under a different chapter than a dwelling. We run it as its own operation, with its own estimator, its own crew and its own warranty paperwork.
- ✓Center-set aluminum storefront framing in the standard 1-3/4 by 4-1/2 inch profile, with 2 by 4-1/2 available for taller spans
- ✓Dry-glazed EPDM gasket systems and wet-glazed structural silicone joints, specified to the opening rather than to habit
- ✓Aluminum entrance doors with the 10 inch bottom rail, offset pivots or continuous hinges, closers, and panic hardware where the occupancy calls for it
- ✓Tempered and laminated safety glazing everywhere the code requires it, with the permanent label left legible for the inspector
- ✓Subsill and end-dam assemblies set before glazing, so water that gets past a gasket leaves the system instead of the tenant's floor
- ✓Same-day board-up and temporary secure closure, with the permanent lite ordered that afternoon while the space keeps trading
- ✓After-hours and weekend scheduling for occupied retail and food service, quoted on the estimate instead of added afterward
- ✓Finish specified as Class I anodized or an AAMA 2604 or 2605 powder coat, with the warranty term stated in writing
Recent Projects Across the West End of the Inland Empire
Full gallery →How It Works
- 1. Tell us which building it is. The first question on the phone is whether this is a house or a tenant space, because the answer changes which estimator comes out, the take-off method and the permit path. A homeowner gets an in-home measure. A tenant or property manager gets a site visit with a lift assessment and a note on whether the work has to happen after hours.
- 2. Measure, then interrogate the opening. Every opening is measured at three points for width and height and once diagonally for square. On houses we probe the sill and lower jambs for rot and for stucco patched over an old leak. On storefront we record the framing profile depth, the glazing method and the glass bite, because a one inch insulated unit will not go into a system built for quarter inch monolithic glass.
- 3. A quote that separates the two scopes. When a job has both, the residential and commercial portions are priced on their own lines with their own warranty terms attached. You see the glass makeup, frame material, finish, permit and inspection allowance, and lead time. Nothing gets folded into one per-window number that hides which half of the job is the expensive half.
- 4. Install, inspect, hand over the paperwork. Residential installs are flashed, insulated with low expansion foam and sealed before any trim goes back. Commercial openings get the subsill and end dams set before a single lite is glazed. You keep the labels, cut sheets, finish specification and both warranty documents in one packet, because the day you need them is years from now.
What Ontario Customers Say
Two other companies quoted my suite off a residential price sheet and neither one mentioned the door had to keep its panic hardware. These guys measured the framing depth, told me the glass was a four week order, boarded it that night and we never closed. The invoice matched the estimate line for line.
Replaced nine windows in a 1962 house. They found dry rot under the sill in the back bedroom during the measure and put the repair on the quote instead of surprising me on install day. The west side of the house is noticeably cooler in the afternoon now.
Our front office glass took a rock from the yard. I expected a pitch for a whole new storefront. Instead they reglazed the existing frame, matched the tint, and charged about a fifth of what I had budgeted. They took the time to explain why the frame was still good.
Honest about what a window can and cannot do. I asked about the plane noise and they said laminated glass would help but would not make it quiet, which is exactly what happened. I appreciated not being sold soundproofing that does not exist.
Where We Work
Ontario Window Replacement serves Ontario, CA and surrounding communities including:
Frequently Asked Questions
Do I need a permit to replace windows in Ontario?
Yes. The City of Ontario Building Department permits residential window replacement, and a straight like-for-like retrofit is usually an over-the-counter or online submittal with no drawings. Commercial glazing is a different animal.
Anything that changes an opening size, alters an exit, or touches an entrance door assembly goes to plan check, and past a certain valuation it can pull in accessibility upgrade obligations along the path of travel. We tell you which of those you are in before you sign anything.
How much does window replacement cost in Ontario?
Residential retrofit vinyl windows in the West End generally run four hundred to nine hundred dollars per opening installed, with fiberglass and clad-wood well above that, and full-frame installation adding stucco and trim repair on top. Commercial is not quoted that way at all.
Storefront is priced by glazed square foot plus framing linear foot, and the things that move that number are glass thickness, tempering, the finish, after-hours labor, and whether the opening needs temporary boarding while the glass is on order.
Why does storefront glass take six weeks when house windows arrive in ten days?
Residential windows are built from a catalog of stock sizes and usually sit in a regional warehouse. Commercial glass is fabricated to your opening. A tempered or laminated insulated unit has to be cut, edged, heat treated, assembled and cured, and heat treatment cannot be hurried. If the lite is oversized or the finish is a special anodize, add more time. We board the opening so the space stays secure and trading while it is in fabrication.
Is aluminum a bad choice for windows now?
For a house in Ontario an untreated aluminum window is a poor choice and has been for decades, because the frame conducts heat straight through and sweats in winter. For a commercial opening it is often the only sensible choice, since nothing else will carry a twelve foot lite or absorb the abuse of a public entrance. The distinction is the thermal break. Commercial framing with a polyamide strut behaves nothing like the 1970s residential slider people remember.
Do you work in the neighborhoods under the airport flight path?
We do a fair amount of work under the Ontario International Airport departure corridors and in the office suites near them. Laminated glass with a thicker interlayer, or two lites of unequal thickness inside one insulated unit, does more for aircraft noise than adding a third pane does. It is a real improvement rather than a cure, and we would rather write that on the estimate than sell it to you as soundproofing.
Can one company really do both houses and commercial storefront?
Yes, but only if it runs them as two operations. The C-17 glazing classification covers both and the same license number appears on both permits. What differs is the crew, the equipment, the estimating math and the warranty document. A company that hands a business owner a residential window quote with a lifetime warranty printed on it has not understood that a lifetime warranty does not apply to a commercial building.