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Before
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Before
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Before
AfterFast, Reliable Window Replacement Across North Hills
Window replacement in North Hills usually runs $650-$1,450 per window for a full-frame job on a standard post-WWII tract home, and $450-$900 for an insert replacement that keeps your existing trim. Most crews can finish a typical five-window job in one or two days once the glass arrives. If you’re at the point where the old aluminum sliders rattle in the wind and the July heat comes straight through the glass, it’s time to talk numbers. Call TruePane at (888) 635-0804 for a free written estimate, measured twice and quoted on paper before we order anything.
We work in North Hills every week, and we know what these homes are hiding. That matters more here than in most parts of the Valley, and we’ll explain why throughout this page.
Why TruePane Windows & Doors Is North Hills’s Preferred Window Replacement Company
Dale Kessler founded TruePane in 2008, but the trade runs deeper than that. He’s a second-generation glazier, and the rule he keeps on the whiteboard is the one that names the company: if the pane is not true, the job is not done. That standard shapes every install we do in the 91343 ZIP, from a single bathroom window to a whole-house energy retrofit.
North Hills sits within about a mile of the 1994 Northridge earthquake epicenter. That single fact changes what we expect to find behind the stucco, and it’s why we send two-person crews with extra shims, a full framing square, and a 4-foot level on every window call in this neighborhood. A rough opening that’s an inch or more out of square is common here, even in homes that look straight from the curb. Our Window Replacement team has spent years learning how North Hills homes react to glass changes, and we quote accordingly, not by copying a bid from a house in Woodland Hills.
We show up on time, in uniform, background-checked, and we treat your home the way we’d treat our own mother’s. That’s not a slogan. It’s the hiring standard. Live people answer the phone 24/7, which means when you call about a window that won’t close or a quote you want to walk through line by line, a human picks up.
Our Window Replacement Services in North Hills
Full Frame Replacement
In North Hills, full frame replacement is the most honest fix for homes built between roughly 1950 and 1975. We pull the entire old window down to the rough opening, inspect the framing and header, re-square and re-shim what the 1994 quake moved, install the new window with a full perimeter flashing system, and retrim the interior and exterior. This is the job that corrects racked openings rather than hiding them behind an insert. Expect $950-$1,450 per window for most mid-range vinyl or fiberglass lines in a typical single-story North Hills tract home, including flashing and basic trim replacement.
Insert Window Replacement
When the original frame and sill are still square and sound, an insert window avoids disturbing your existing stucco and interior trim. North Hills homes often qualify if the rough opening hasn’t shifted, but we check every opening with a framing square before recommending this route. A basic insert with low-E glass and new weatherstripping typically runs $450-$900 per window installed. We do not sell an insert into an out-of-square opening, because it will bind and leak air within a year, and then you’re paying twice.
Storm Window Replacement
Many North Hills homes were built with exterior storm windows added over single-pane aluminum sliders in the 1970s and 1980s. Those storms are now bent, clouded, or missing hardware. We replace them with modern low-profile storm units or, more often, recommend removing the storm layer entirely and going with a single high-performance window that does the job of both. Replacement storms typically run $180-$420 per unit installed, but the better long-term value in this climate is usually a full window upgrade, and we’ll quote both side by side on paper so you can see the difference.
Energy-Efficient Upgrade
North Hills regularly sees summer highs above 100°F while the coast stays in the 70s, and the 30-40°F day-to-night swing works every seal and frame joint hard. Original single-pane aluminum windows are a serious energy liability here. We upgrade to dual-pane low-E glass with argon fill, often in a frame material matched to your existing architecture. A typical upgrade runs $700-$1,200 per window for vinyl, and $950-$1,500 for fiberglass, depending on glass package and grid options. The energy savings are real but secondary; the comfort difference inside a west-facing North Hills living room in August is the first thing you’ll notice.
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.
Trusted Brands We Service in North Hills
We’re an authorized installer for more than a dozen manufacturer lines, and for North Hills homes we commonly quote PGT, and ES Windows, depending on whether you want a mid-range vinyl value, a fiberglass long-haul product, or a high-end custom line. We also service and replace Andersen, Pella, Marvin, and Jeld-Wen products already in the house. Parts for common stock sizes are available locally, which keeps most replacement jobs moving without a second visit. You get the quote with brands listed side by side on paper, not a verbal “trust me” on price.
Common Window Replacement Problems We See in North Hills Homes
- Racked rough openings from the 1994 Northridge quake. We routinely find openings an inch or more out of square, even in houses that look plumb from the street. A basic insert window cannot correct this, and forcing one in is the fastest way to get a failed seal and air leaks.
- Undersized headers sagging under stucco. Original post-WWII headers were often sized just barely to code in 1955. Decades of load and one major earthquake later, we see gentle sags that make new sashes bind, and we address the header before the glass goes in.
- Failed waterproofing at the sill pan and nailing flange. Original tarpaper and felt are typically dust by now. Water gets behind the siding and into the wall cavity behind the old window, and the new window inherits that problem unless we replace the flashing as part of the install.
- Chronic seal failure from Valley temperature swings. A 40-degree daily swing expands and contracts glass and frame materials constantly. Cheap insulated glass units fail faster here than almost anywhere in Los Angeles, which is why we register both manufacturer warranty layers in writing before the truck leaves your driveway.
Pricing for Window Replacement in North Hills, CA
Here’s what honest numbers look like in the 91343 ZIP for 2026. A full-frame vinyl double-hung in a standard North Hills tract home runs $950-$1,350 installed. A simple insert in a sound frame runs $450-$750. Storm window replacement runs $180-$420 per unit. Fiberglass full-frame work runs $1,050-$1,550 per window. These ranges assume a typical single-story wood-frame stucco home built between 1950 and 1975. If we open the wall and find the quake moved the rough opening, we quote the re-shimming job as a written line item before we touch it, and you approve any number before we spend it. Call (888) 635-0804 for a free estimate on your specific windows.
We Also Serve Cities Near North Hills
Our crews work throughout the San Fernando Valley, including Window Replacement in North Hills and nearby communities. If you’re in Northridge, San Fernando, Van Nuys, or Encino, we cover those areas on the same scheduling calendar. The same Done Right Promise and written warranty registration apply on every job, in every neighborhood.
Serving North Hills, CA - Our Local Coverage Area
We’re based in the North Hills 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 North Hills
In this neighborhood, yes, it’s genuinely likely. Homes built before 1994 and within a mile or so of the epicenter absorbed the hardest ground shaking in the region, and we find racked rough openings at a rate we almost never see in Reseda or Granada Hills. The fix is a full-frame replacement with re-shimming and re-squaring of the jamb, not an insert. Call (888) 635-0804 and we’ll check your openings with a framing square before we recommend anything.
Fog between panes means the insulated glass unit’s seal has failed, and the glass unit itself is the repair. On many North Hills homes from the 1960s and 1970s, the aluminum frame is also warped from decades of Valley heat, and replacing just the glass is a short-term patch. We’ll price a glass-only replacement and a full window replacement side by side so you can decide with real numbers. Either way, call (888) 635-0804 for a free written quote.
Window replacement that changes the opening size or structural framing requires a permit in Los Angeles, and full-frame work on older North Hills homes often falls into that category. When we open the wall, the city may also require upgrades like tempered glass near doors or egress-compliant sashes in bedrooms. We pull the permit, schedule the inspection, and write any code-required upgrades into your contract before work starts. No surprise line items after the fact. Call (888) 635-0804 and we’ll tell you what your specific job triggers.
The Valley’s 30-40°F day-to-night temperature swing causes constant thermal expansion and contraction in the glass and frame materials. North Hills sits in the hottest part of that pattern, regularly hitting 100°F-plus summer days while nights drop into the 60s. That flex cycle is hard on insulated glass seals and weatherstripping, which is why we quote dual-pane units with a registered warranty and why we register both manufacturer warranty layers in writing before the truck leaves your driveway. Call (888) 635-0804 for a quote, and ask about the Done Right Promise on any job.
If the existing frame is square and the trim is intact, yes, insert replacement keeps your original wood casing and interior trim in place. The catch in North Hills is that the quake-moved rough openings often hide behind that trim, and the only way to know for sure is to open one window up. On a 1962 tract home just off Nordhoff Street, we found the original aluminum slider’s rough opening out of square by an inch and a quarter. We re-squared the jamb, shimmed a new Milgard double-hung with low-E glass and argon fill, and flashed the entire perimeter with butyl flashing tape before reinstalling the trim. That’s the difference between a window that works for two years and one that works for thirty. Call (888) 635-0804 for a free look at your trim and your openings.
Get Your Free Estimate in North Hills
If you live in North Hills and your windows are original to a house built during the post-WWII boom, they’re past due. Whether it’s fogged glass, a slider that sticks, or a bedroom that never cools down, we’ll measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers before the truck leaves. Call (888) 635-0804 to schedule your free estimate. A live person answers, day or night.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving North Hills and the San Fernando Valley with a second-generation glazier’s standard since 2008.