Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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Westlight Windows & Doors is an independently owned and operated Kingswell location serving homeowners throughout Fontana, CA. We replace and install windows and doors in one of the toughest environments in Southern California: a city at the base of Cajon Pass where summer heat routinely hits 108°F, Santa Ana winds channel directly through the mountain gaps, and thousands of 1990s tract homes are hitting the end of their builder-grade window life at the same time. Most single-window replacements in Fontana run $550-$1,350 installed, and we put every price in writing before any work starts. Call us at (903) 354-7134 to schedule a free estimate.
Why Fontana Homes Are Different
Fontana sits at the base of Cajon Pass, which means homes here endure some of the most punishing window conditions in the Inland Empire. Summer highs of 108-112°F bake UV damage into vinyl frames and accelerate dual-pane seal failure. Then the Santa Ana winds hit, funneling through the Cajon and Devore mountain gaps with enough sustained lateral pressure to loosen sliding door tracks, blow out door sweeps, and torque window frames out of square over time. Homes in flatland cities like Rialto or Ontario simply don’t see the same combined heat-and-wind stress.
Fontana’s housing stock makes this even more concentrated. The city’s post-Kaiser-Steel residential boom of the 1990s and early 2000s produced tens of thousands of stucco tract homes, almost all fitted with builder-grade vinyl dual-pane windows. Those windows are now simultaneously hitting 20-30-year end-of-life. On some north Fontana streets along the 210 Freeway corridor, entire blocks of same-vintage homes are showing dual-pane fog and seal failure at the same time. Whole-neighborhood window replacement jobs are a routine expectation here, not a rarity. Older blocks near the original downtown core add another layer: pre-1970s concrete block and wood-frame homes with original aluminum single-pane frames that are well past replacement age.
Our Main Fontana Services
Fontana homeowners most often call us about two things: replacing windows that have failed in the heat and wind, and installing new doors that hold up to the same conditions. Each service has its own Fontana page with detailed pricing and local specifics.
Window Installation in Fontana
Window installation is the right call when the framing is new, a remodel opened a new opening, or the original window was never set correctly. In Fontana, improper flashing and sealing fail fast under Santa Ana wind pressure and triple-digit heat. We install to hold square through heat cycling and wind events. See our Window Installation in Fontana page for scope and pricing.
Door Installation in Fontana
Fontana’s wind conditions stress door hardware and weatherstripping harder than in neighboring flatland cities. A door that’s hung out of square or fitted with a thin sweep will leak dust, heat, and cold air from day one. We install entry doors, sliding doors, and patio doors with hardware and seals matched to Fontana’s wind and temperature swings. Details on our Door Installation in Fontana page.
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 Fontana
We stock and install products from eight manufacturer lines, including impact-rated PGT and CGI for homes in Fontana’s wind corridors, and energy-efficient CWS for homeowners cutting cooling costs through triple-digit summers. Having product physically available means shorter lead times than contractors special-ordering from a catalog. See our brands for the full line.
Pricing for Window Company in Fontana, CA
| Service | Typical range in Fontana |
|---|---|
| Single vinyl window replacement (standard size, builder-grade) | $550-$850 installed |
| Single vinyl window replacement (larger or custom size) | $850-$1,350 installed |
| Energy-efficient upgrade (low-e glass, single window) | $650-$1,100 installed |
| Impact-rated window replacement (PGT or CGI, single unit) | $1,100-$2,200 installed |
| Standard window installation (new construction or remodel opening) | $200-$450 per opening |
| Whole-home window replacement (10-15 windows, builder-grade) | $7,000-$15,000 |
| Entry door installation (standard steel or fiberglass) | $900-$1,800 installed |
| Premium entry door installation (Therma-Tru or equivalent) | $1,800-$3,500 installed |
| Sliding patio door installation | $1,500-$3,200 installed |
| Front door replacement with side panels | $2,500-$4,500 installed |
Fontana jobs trend toward the upper half of these ranges when homes need impact-rated products for wind-exposed lots, or when original frames are too far out of square for a simple drop-in. What we quote is what you pay: every customer gets a written price before any work starts, and we don’t revise it at the door.
Neighborhoods We Serve in Fontana
Our crews work throughout Fontana, from the master-planned tracts along the 210 corridor on the north side to the older neighborhoods near downtown. We schedule around each area’s specific window and door conditions, not a generic county-wide route.
- North Fontana (210 corridor)
- Southridge
- Hunter’s Ridge
- Citrus Heights area
- Downtown Fontana
Service Area – Cities Near Fontana
We serve Fontana as our core market and regularly schedule estimates in the surrounding communities. Homeowners just outside the city limits call us from Bloomington, CA and Rialto, CA for the same wind and heat conditions, and from Rancho Cucamonga, CA and Riverside, CA for the broader Inland Empire climate. Dispatch and scheduling are coordinated from our Inland Empire office; crews serve Fontana locally. If you’re within reasonable reach of Fontana, call us at (903) 354-7134 to confirm coverage.
Serving Fontana, CA - Our Local Coverage Area
We’re based in the Fontana 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 Fontana
We schedule estimates throughout Fontana weekly, and our Inland Empire office coordinates crews so a team is in the city on a regular cycle. Call (903) 354-7134 and a live person will give you the next available appointment window.
Straight window and door replacements typically don’t require a Fontana permit when the opening isn’t being enlarged or structurally altered. New installations and any work involving structural framing may. We confirm permit requirements with the city before work starts and pull any needed permits so the job passes inspection.
Every job is covered by the Kingswell Guarantee. If the work fails within the guarantee period, we come back and correct it at no charge. That’s the 365-Day Done Right Promise. Call (903) 354-7134 and we’ll schedule a return visit.
Want a written price for your Fontana windows or doors? Call (903) 354-7134 to schedule your free estimate, and we’ll show up in the window we gave, with the numbers on paper before any work begins.
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 Fontana Customers Say
"Got quotes from three companies. Westlight wasn't the cheapest but they were the only one who measured everything carefully and put it all in writing. Worth it. No surprises on install day."
- Craig Dillard"Our sliding patio door had come off its track years ago and we just lived with it. New one is smooth as butter. They hauled off the old one and vacuumed up before they left."
- Jessica Landry"Replaced eight drafty old windows that were basically single pane. The house is warmer already and the street noise is way down. Crew was on time both days and the price was exactly the quote."
- Harold Bemis