Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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Before
AfterFast, Reliable Window Replacement Across Van Nuys
Window replacement in Van Nuys costs $650-$1,900 per window for vinyl, $1,100-$2,800 for full-frame replacement, and $1,500-$3,500 per opening for impact-rated units in 2026. Most jobs run 1-3 days once the window arrives from the manufacturer, and the survey that produces your written price takes about 90 minutes. That price is the same document as the final invoice – Haven Clause 1, and it has been since 2012.
Our crews work Van Nuys daily. We know the flatland tract homes off Vanowen and Victory, the garden apartments east of the 405, and the older additions where jalousie windows hide behind drywall. If you’re reading this, you’ve probably got original single-pane aluminum frames that were never built for 110°F afternoons. Call Sonia Raman’s team at (509) 265-6387 and we’ll schedule the measured survey that starts everything. The written price comes before any work.
Why Sightline Windows & Doors Is Van Nuys’s Preferred Window Replacement Company
The reason people keep hiring us in Van Nuys is simple: we hand over a written price before a tool is lifted, and we leave a documented photo record of every opening when the job is done. That’s not a courtesy. It’s the Haven Standard, written into the scope of work on 18,000+ openings since 2012.
Van Nuys homeowners ask specific questions. They want to know the SHGC rating on a west-facing window under Title 24. They want a price in writing, on the page, before they call. They want the license number of the person who shows up. Clause 3 – Verified Crews – means the background-checked, uniformed technician at your door is the person on the record. We publish the numbers. We answer the phone live, 24/7, not with a callback queue. And because we’re independently owned and operated, Sonia Raman’s name is on the work, not a franchise logo.
We’ve installed across Van Nuys from the apartments south of Oxnard Street to the single-story ranches north of Roscoe. The call notes from those jobs form a pattern: south-facing windows fail first, west-facing vinyl warps, and the cheap spec from the last guy costs more within a decade. That’s what we’ll walk you through, in writing.
Our Window Replacement Services in Van Nuys
Full Frame Replacement
Full frame replacement in Van Nuys means removing the entire existing window – frame, sash, trim, everything – down to the rough opening. A typical full-frame replacement in Van Nuys runs $1,100-$2,800 per opening, depending on size and material. This is the right call when the original 1940s-1970s aluminum frame is bent, the sill is rotted, or the rough opening has gaps that were never flashed. We find unflashed openings constantly in Van Nuys tract homes – builders in that era didn’t seal them, and hot valley air has been pulling through for 60 years. Full replacement is also the only way to legally change the fenestration on a wall that needs a stricter Title 24 SHGC.
See our Window Replacement service hub for a full breakdown of the full-frame process.
Insert Window Replacement
Insert replacement – sometimes called pocket replacement – fits a new window inside the existing frame. It’s the budget-sensitive option for Van Nuys rentals and garden apartments where the original frame is still square. Inserts typically run $650-$1,400 per window in Van Nuys. The catch: you keep the old frame’s thermal weaknesses. If the original aluminum frame conducts heat into the wall cavity, a new insert with great glass still fights that frame. We’ll tell you honestly, in the measured survey, whether an insert buys you enough or whether full replacement is the actual fix. That distinction is in writing before you spend a dollar.
Vinyl Replacement Windows
Vinyl replacement windows in Van Nuys are the volume category. A standard double-hung vinyl insert runs $650-$1,200 per window; a full-frame vinyl replacement runs $1,100-$1,800. Here’s the valley-specific truth: cheap vinyl on a south- or west-facing wall in Van Nuys will warp or bow within 5-8 years. The solar load off the 405 corridor is relentless. We specify higher-grade vinyl with steel-reinforced sashes on those exposures, and we tell you why the $900 window online costs more than the $1,400 window we put in writing. The difference shows up in the thermal photo record we leave behind.
Energy-Efficient Upgrade
Energy-efficient upgrades are the dominant conversation in Van Nuys because of the heat. A full energy retrofit – replacing all original single-pane aluminum with double-pane low-E glass – runs $8,000-$22,000 for a 1950s single-story home, depending on the number of openings and which frames need full replacement. Carbon: Title 24 Climate Zone 9 requires west-facing windows to meet a maximum SHGC of 0.25. That’s stricter than coastal LA, where 0.30-0.40 is allowed. The same window model sold legally in Santa Monica cannot be installed legally on a Van Nuys west wall. We spec the glass to the elevation, not to what’s in stock. That’s Clause 5 – No surprises.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
BeforeAfterTrusted Brands We Service in Van Nuys
We install from eight manufacturer lines and specify by performance tier, not margin. For Van Nuys specifically, we lean on PGT for impact-rated casements and picture windows, CWS for aluminum-clad wood on custom geometric work, and ES Windows for high-end residential glazing where sightline matters. We stock common replacement parts for these lines in our Los Angeles dispatch inventory, so turnaround on warranty service in Van Nuys doesn’t wait on a factory shipment when we can avoid it. The product line is written on your quote. So is the warranty. You keep both.
Common Window Replacement Problems We See in Van Nuys Homes
- Seal failure on south-facing insulated glass. The 105-110°F summer heat and 40-50°F daily swings in Van Nuys stress dual-pane seals hard. IGU fogging between panes shows up within 5-8 years on south walls. The fix is a new IGU or full sash replacement, not a cleaner.
- Warped vinyl frames on west-facing walls. Vinyl expands under direct afternoon solar load. In Van Nuys, that means sashes that bind, fail to close tight against the jamb, and leak conditioned air. We see this constantly on west-facing bedroom windows in tract homes off Sherman Way.
- Santa Ana debris in window tracks. October and November wind events force leaves, dust, and small debris into sliding window tracks. That grit scores the aluminum rails, bends the sash locks, and eventually cracks single-pane glass. We run a secondary wave of repair calls every fall for exactly this.
- Original jalousie windows that were never replaced. Converted garages and older additions in Van Nuys still have louvered jalousie windows. They don’t seal, they don’t meet Title 24, and they’re a security gap. Replacing them is a full-frame job, no shortcuts.
Pricing for Window Replacement in Van Nuys, CA
Here are actual ranges for the Van Nuys market in 2026:
- Vinyl insert replacement: $650-$1,400 per window
- Full-frame vinyl replacement: $1,100-$1,800 per window
- Full-frame aluminum-clad wood (CWS, ES Windows): $1,800-$2,800 per window
- Impact-rated window (PGT 2200 Series or similar): $1,500-$3,500 per opening, depending on size and frame type
- Whole-house retrofit (1950s single-story, 8-12 windows): $8,000-$22,000
What moves the price: full frame vs. insert, glass spec (low-E coatings add $150-$400 per window, and Van Nuys needs them on south and west walls), whether the rough opening needs re-flashing or reframing, and the material of the replacement frame. We give you a written, line-item price from the measured survey. That document is the same one you sign. No change orders. No “we found more when we opened the wall.” If we missed something, that’s on us, not your wallet. Call (509) 265-6387 to schedule the survey – the estimate is free.
We Also Serve Cities Near Van Nuys
Sightline runs crews daily through the neighboring Valley communities. We cover Window Replacement in Van Nuys and the surrounding area, including Sherman Oaks, Studio City, North Hollywood, and North Hills. Same measured survey, same written price, same photo record – no matter which side of the 405 you’re on.
Serving Van Nuys, CA - Our Local Coverage Area
We’re based in the Van Nuys 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 - Window Replacement in Van Nuys
Under California Title 24 Climate Zone 9, a west-facing replacement window in Van Nuys must meet a maximum SHGC of 0.25. That’s stricter than the 0.30-0.40 allowed in coastal zones like Santa Monica, which means some window models sold legally elsewhere in Los Angeles County cannot be installed on a Van Nuys west wall. We’ll spec the glass to the elevation in your measured survey. Call (509) 265-6387 and we’ll tell you exactly which windows in your house are subject to the stricter threshold.
Because Van Nuys sits on the flat floor of the San Fernando Valley, where summer temperatures routinely hit 105-110°F and daily temperature swings run 40-50°F, the solar load and thermal cycling stress vinyl frames and IGU seals far more aggressively than in coastal cities like Santa Monica. Cheap vinyl from big-box retailers is not engineered for that sustained heat. We see seal failures and frame warping within 5-8 years on south- and west-facing walls in Van Nuys, while the same window in Santa Monica might last 15. That’s why we specify higher-grade vinyl with low-E coatings and aluminum-clad exteriors on those exposures. The price difference is on the quote, and so is the reason.
No. Jalousie windows – the louvered glass slats common in 1960s Van Nuys additions and converted garages – cannot meet Title 24 air-infiltration standards with new glass alone. The frame itself is the problem. Louvers don’t seal, the hardware is obsolete, and the rough opening was never flashed. Full-frame replacement is the only compliant fix. If you’ve got jalousies on the south side of your house, they’re also pulling hot valley air in year-round. We’ll show you the smoke test and the thermal readings on that survey.
On a 1950s single-story Van Nuys tract home with original single-pane aluminum windows, replacing all of them with double-pane low-E glass typically cuts cooling costs 20-30% during the June-October run. On a 1962 single-story off Vanowen near the 405, we replaced seven original aluminum jalousies on the south elevation with PGT 2200 Series impact-rated casements. The homeowner reported interior room temperatures dropped 12°F during a July 109°F afternoon. Your exact number depends on your window count, orientation, and current insulation – we’ll give you the math in the survey, in writing.
No, Van Nuys is not in a wind-borne debris zone, so impact-rated windows are not required by code. You choose impact-rated if you want the added structural strength, noise reduction from the 405 and Van Nuys Airport flight paths, or the break-in resistance. Many Van Nuys homeowners in garden apartments and ground-floor units specify impact-rated glass for security reasons, not code compliance. If you do choose PGT impact-rated units, expect the line item to run $1,500-$3,500 per opening. We’ll walk you through whether that spend is worth it for your specific house – not because we get a better margin on it.
On a 1962 single-story tract home off Vanowen Street near the 405, our crew replaced seven original aluminum single-pane jalousie windows on the south elevation with PGT 2200 Series impact-rated casements using high-grade low-E glass and stainless steel hardware. The homeowner reported that interior room temperatures dropped 12°F during a July 109°F afternoon, and we sealed the rough openings with butyl tape because the original builders had left unflashed gaps that were pulling in hot valley air. That’s the difference between a window swap and a window replacement done to the Haven Standard. The photo record from that job shows exactly what we found, what we specified, and what the finished opening looks like.
If you’re pricing window replacement in Van Nuys, get the written number first. Not a ballpark. Not a range in an email. The measured survey you keep, the line-item price, the manufacturer spec, and the warranty – in one document. Call (509) 265-6387 to schedule your free estimate with Sightline Windows & Doors. Sonia Raman’s team will answer live.
Written by Sonia Raman, Owner at Sightline Windows & Doors, serving Van Nuys under the Haven Standard since our founding in 2012.