On-Site Measure
We measure every opening with a tape measure, check the jamb for rot and square, and note the depth. You get a written price the same visit, so there is no waiting on a callback quote.
Licensed
Licensed & Bonded
Fully Insured
Insured & Bonded
24/7 Emergency
Same-Day Response
Warranty Backed
16+ Years Trusted in Los Angeles
What Our Insert Window Service Includes
Every insert job we quote covers the full install, not just the unit. Here is what is in the price, and where upgrades like laminated glass or fiberglass frames change the number.
New Window Unit
Your chosen unit in vinyl, fiberglass, wood, aluminum, or composite, with the glass package you picked. Standard low-E and argon are available, and we can spec laminated glass for noise on street-facing windows.
Full Install Labor
Removal of the old sashes, setting the new unit on blocks, shimming and leveling, and checking operation on every sash. A two-person crew handles most homes in a single day.
Sealing and Insulation
We insulate the perimeter gap, seal with silicone caulk, and apply flashing tape at the head and sill. That is the detail that keeps water out and stops drafts from sneaking around the frame.
Cleanup and Haul-Away
Drop cloths go down before we start and come up when we finish. Old sashes, packaging, and debris leave with us. You do not need a dumpster or a trip to the transfer station.
Written Warranty
You get a workmanship warranty in writing on top of the manufacturer's coverage on the unit. If a seal fails or a sash needs adjustment, one call brings us back.
What Insert Window Replacement Los Angeles CA Actually Involves
Insert Window Replacement Los Angeles CA is a window replacement method that sets a complete new sash-and-frame unit inside your existing window opening, reusing the original jamb and trim instead of demolishing them. We pull the old sashes, check the frame for rot and square, set the new unit on window setting blocks, shim it level, insulate the gap, and seal it with silicone caulk and flashing tape. Because the wall stays intact, there is no stucco patch, no drywall repair, and no repainting.
Los Angeles homes need this more than most. Our 1920s bungalows in Highland Park and 1960s tract houses in the Valley were built with single-pane wood sashes that have spent decades baking in UV and flexing through hot days and cool nights. That cycle cracks seals, fogs the glass, and lets noise from the 101 and 405 straight into your living room. If you have been searching for Insert Window Replacement in Los Angeles CA near me and want a crew that finishes in a day, this is the job we run five days a week.
How Our Insert Window Process Works
Five steps, one crew, no surprises. Here is exactly what happens from the first phone call to the final walkthrough.
01
Schedule
Call or book online — a real human picks up and confirms a 2-hour arrival window.
02
Diagnose
Licensed tech inspects on-site, then walks you through the cause and your options.
03
Fix
The job is completed to code and done right the first time — no shortcuts, no surprises.
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Guarantee
Every job backed by a written workmanship warranty — and we stand behind it.
Tools and Methods We Use
Tools & Equipment
Tape measure and level
Every opening is measured twice before ordering, and each unit is checked level in both directions before it is shimmed. A window set out of level will not seal or operate correctly.
Pry bar and utility knife
Used to pull the old sashes and cut away old caulk and weatherstripping cleanly. Careful removal is what protects your existing trim and keeps the jamb intact for the new unit.
Caulking gun and silicone caulk
The perimeter seal is the detail that stops water and air. We run a continuous bead of silicone caulk around the frame after the insulation is packed in, then tool it smooth.
Insulation gun
Low-expansion foam fills the gap between the new unit and the existing jamb. It stops air movement without bowing the frame, which is why we use a gun rather than a can.
Window setting blocks and shims
Blocks carry the weight of the sash at the correct points so the frame does not sag over time. Shims fine-tune the unit to level and plumb before fastening.
Flashing tape
Applied at the head and sill to shed water away from the opening. It is the layer that matters most on west- and south-facing windows that take direct rain and sun.
Drill and screwdriver set
Used to fasten the unit through the jamb and to adjust hardware after install. We check every lock and balance and adjust on the spot rather than scheduling a return trip.
Methods & Standards
AAMA and WDMA installation standards
These are the industry standards for how a window is set, shimmed, insulated, and sealed. Following them is what separates a window that performs for 20 years from one that leaks in three. We build every install to these specs.
ENERGY STAR and NFRC-rated glass selection
We match the glass package to the orientation of each window. West- and south-facing openings get more low-E and argon to cut heat gain, while shaded north windows can use a simpler spec and save you money.
Title 24 compliance
California's energy code sets performance requirements for replacement windows. We spec units that meet the current requirement and provide the documentation you need if you are pulling a permit or selling the home.
Frame inspection before ordering
We check every jamb for rot, water damage, and square at the measure. If the frame will not hold an insert, we quote a full frame replacement instead. That step is why our insert jobs do not come back as leaks.
When Insert Window Replacement Makes Sense
01
A 1950s Sherman Oaks ranch house with original single-pane wood sashes that fog and stick, but the frames are still solid and square.
What we do: We measure all openings, confirm the jambs are sound, and order vinyl inserts with low-E and argon glass. A two-person crew installs the full set in one day, sealing and insulating each perimeter as they go.
→ New windows, no stucco or drywall repair, and no repainting. The house holds temperature better and the sashes open with one hand.
02
A Santa Monica condo with 1970s aluminum sliders that drag on the track and let in salt air and street noise.
What we do: We replace the sliders with insert units in thermally broken aluminum and laminated glass on the street side. The frame is checked for corrosion before anything is ordered, and the new track is set level.
→ Sliders that glide with one finger, less noise in the living room, and a frame that stands up to coastal air without sweating in winter.
03
A North Hollywood home near the 170 where two bedrooms are unusable for sleep because of traffic noise.
What we do: We spec laminated glass inserts for the two noisy elevations and standard low-E for the rest of the house. The crew seals the perimeter carefully, since gaps are where most noise gets in.
→ Noticeably quieter bedrooms, better sleep, and a one-day install that did not disturb the rest of the house.
04
A Pasadena craftsman where the owner wants to keep the original interior trim but the glass is fogged and the sashes are painted shut.
What we do: We confirm the jamb is sound, then install wood inserts sized to the existing opening so the original casing stays untouched. Interior finish is matched to the existing paint.
→ Clear glass and working sashes while the home keeps its period look. No trim was removed or replaced.
How Insert Window Replacement Runs in Los Angeles
Los Angeles is not one housing market, it is a dozen, and the window job changes block by block. On the Westside, salt air corrodes aluminum frames and eats old hardware, so we check for corrosion before ordering and often steer customers toward vinyl or fiberglass. In the Valley, the bigger issue is heat: west-facing windows in Woodland Hills and Canoga Park take direct afternoon sun that cooks single-pane glass and drives up cooling costs. Hillside homes in Encino and Tarzana add a third wrinkle, since the openings are rarely perfectly square and the flashing detail has to handle wind-driven rain. We also work to California's Title 24 energy code, which sets a performance floor for replacement glass, and we spec every unit to meet it. If you want pocket window replacement services Los Angeles homeowners actually recommend, the difference is in these details, not the sales pitch. A typical three-window insert job takes four to six hours, and we run crews six days a week across Los Angeles County.
Neighborhoods We Serve
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Sherman Oaks
Mix of 1950s ranches and newer builds. The older homes usually have solid wood jambs that take an insert cleanly, which keeps the job to a single day.
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Woodland Hills
West-facing walls take heavy afternoon sun. We spec more low-E and argon here to cut the heat load that drives summer cooling bills.
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Santa Monica
Coastal salt air corrodes aluminum and eats old hardware. We inspect frames for corrosion and often recommend vinyl or fiberglass inserts.
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Encino
Hillside homes rarely have perfectly square openings. Extra flashing detail at the head and sill keeps wind-driven rain out of the frame.
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Pasadena
Craftsman and period homes where the original interior trim is worth saving. Wood inserts sized to the existing opening preserve the look.
Local Conditions We Plan For
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Intense UV and summer heat in the Valley
Glass seals fail faster and vinyl can fade or warp if the extrusion is cheap. We spec UV-stable frames and quality sealed units so the window still performs after a decade of direct sun.
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Coastal salt air on the Westside
Aluminum frames pit and hardware seizes. We check for corrosion at the measure and steer customers toward materials that hold up near the ocean.
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Title 24 energy code requirements
Replacement glass has to meet a performance floor. We spec units that comply and provide the documentation you need for a permit or a sale.
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Older housing stock with single-pane wood sashes
Most pre-1960 homes still have original sashes that fog, stick, and leak air. When the jamb is sound, an insert fixes all three without touching the walls.
Sherman Oaks Ranch, Six Windows
Window Problems We Solve in Los Angeles
Most calls we get come down to four failures. Each one has a fix, and an insert handles three of them without touching your walls.
Problem
Foggy glass and condensation between panes
A failed seal lets moisture in, so the glass stays cloudy year-round and you lose the insulating gas fill. The window still opens, so most people put off replacing it for years while the energy performance quietly drops.
Our Fix
We replace the unit with a new sealed assembly rated to NFRC standards. New low-E glass with argon restores the thermal performance and clears the view. Most jobs are done in a single visit with no wall repair.
Problem
Drafty windows that push up energy bills
Air leaking around a worn sash and tired weatherstripping makes your AC work harder all summer. On a west-facing wall in the Valley, that shows up as a room you cannot cool and a higher bill every month.
Our Fix
An insert unit with fresh weatherstripping and a fully sealed perimeter stops the leak. We insulate the gap and caulk the frame so air has nowhere to pass. Customers usually notice the difference the first hot week.
Problem
Sticking, painted-shut, or hard-to-open sashes
Old wood sashes swell and bind, and painted tracks make windows a two-hand job. That is a safety issue in a bedroom and a daily annoyance everywhere else. Forcing a stuck sash often cracks the glass or bends the hardware.
Our Fix
We remove the old sashes and set new units with modern balances and hardware that glide with one hand. Every window gets tested through a full open-and-close cycle before we leave, and we show you how the tilt feature works.
Problem
Street and freeway noise coming through the glass
Single-pane glass does almost nothing to block traffic noise. Homes near the 101, 405, and 170 feel it most, and it shows up as poor sleep and a TV you keep turning up. Noise complaints are one of our most common calls.
Our Fix
We spec laminated glass on the noisy elevations and pair it with a tight perimeter seal. The combination cuts the sound that reaches your rooms. Two bedrooms facing a busy street is a typical one-day job.
Why Homeowners Choose Insert Windows
Insert windows solve the three problems Angelenos call us about most: high bills, foggy glass, and street noise. Here is what changes once the new units are set and sealed.
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Lower Cooling Bills
Low-E glass with argon gas blocks a large share of the heat that pushes through single-pane windows. On a west-facing wall in Woodland Hills, that is the difference between a room you can use at 4 p.m. in August and one you avoid. Most customers report a noticeable drop in summer runtime on their AC.
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One-Day Installation
A typical three-window insert job takes four to six hours. We cover floors, work room by room, and have your furniture back in place the same afternoon. You do not need to move out, board anything up, or schedule a stucco contractor for the following week.
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Quieter Rooms
New weatherstripping and a tight perimeter seal cut traffic and freeway noise. Homes near the 101 in Studio City and the 405 in Van Nuys notice it first in the bedroom. Pair inserts with laminated glass and the reduction is even more obvious on a busy street.
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No Rot, No Drafts
Rotted window frames and broken seals are the two failures that drive most replacements. When the jamb is sound, an insert solves both without demolition. When it is not sound, we tell you straight and quote a full frame replacement instead, so you are never paying for a fix that will not hold.
Licensed, Insured, and Warrantied
Licensed & Certified
- California Contractor License (CSLB) — issued by California Contractors State License Board
- ENERGY STAR Partner — issued by U.S. Environmental Protection Agency
- AAMA Certified Installation — issued by American Architectural Manufacturers Association
- WDMA Member Standards — issued by Window and Door Manufacturers Association
- OSHA Safety Compliance — issued by Occupational Safety and Health Administration
Verified Reviews
Google ★★★★★4.9
Measured on a Tuesday, installed the next week. Six windows in one day, no mess, and they walked me through every sash before they left. The house is cooler in the afternoon and the foggy glass is gone. Fair price and no pressure to buy more than I needed.
Yelp ★★★★★4.8
They told me one of my windows needed a full frame job instead of an insert because the jamb was rotted. I appreciated the honesty. The other five went in as inserts and look great. Crew was on time and cleaned up everything.
BBB ★★★★★4.9
Second time using American Reliable. First job was a rental in Van Nuys, this one was my own house in Studio City. Same crew quality both times. Laminated glass in the bedrooms cut the freeway noise more than I expected.
Google ★★★★★5.0
Condo sliders were dragging and leaking air. They swapped them in about five hours, checked the frame first, and said no demolition was needed. New sliders glide with one finger. They hauled the old units away and left the place spotless.
16 Years of Window Work in Los Angeles
American Reliable Windows & Doors has been installing windows across Los Angeles County since 2010. That is 16 years of measuring bungalows in Sherman Oaks, condos in Santa Monica, and hillside homes in Encino where the frame is never quite square. We are a state-licensed contractor, we carry insurance and bonding, and every install is done to AAMA and WDMA standards with ENERGY STAR-rated glass options. Our crews have set thousands of insert and pocket units, and we know which Los Angeles building stock takes an insert cleanly and which one needs a full frame job instead.
- State-licensed California contractor (CSLB) with active insurance and bonding
- AAMA and WDMA installation standards followed on every opening
- ENERGY STAR and NFRC-rated glass packages available for Title 24 compliance
- Thousands of insert and pocket units installed across Los Angeles County
- Factory-trained on Andersen, Pella, Marvin, Milgard, and Simonton systems
What Los Angeles Customers Say
Real experiences from customers who chose our Insert Window Replacement services.
“We had six foggy single-pane windows facing the street and the afternoon sun was brutal. The crew measured on a Tuesday and installed the following week. They were done by 3 p.m., cleaned everything, and the house is noticeably cooler. Our AC runs less in the evening now. Straight pricing, no upsell, and they told us one window needed a full frame job instead of an insert.”
M
Marisol R.
Homeowner, Sherman Oaks
“I live close to the 170 and the noise was the main reason I called. They set insert units with laminated glass in the two bedrooms and the difference is real. I sleep through the morning traffic now. Install took one day, they laid down cloths, and I did not have to patch or paint anything afterward.”
D
Danny K.
Homeowner, North Hollywood
“My condo had original 1970s aluminum sliders that stuck and leaked air. American Reliable swapped them for inserts in about five hours. They checked the frame first and said it was solid, so no demolition. The new sliders glide with one finger and the salt air has not touched them. Fair price and they hauled the old units away.”
P
Priya S.
Condo Owner, Santa Monica
Frequently Asked Questions
Real answers to the questions we hear most often from local homeowners and property managers.
How much does Insert Window Replacement cost in Los Angeles?
Most insert window jobs in Los Angeles run $550 to $1,200 per opening installed in 2026, depending on size, glass package, and material. A basic vinyl insert with standard low-E glass sits at the low end. Fiberglass, wood, or laminated glass for noise pushes toward the top. Whole-home discounts apply at six windows or more, and we quote everything in writing before you commit.
What is pocket window replacement in Los Angeles CA?
Pocket window replacement is the same job as an insert: a new window unit set into the existing frame after the old sashes come out. The name comes from the pocket left behind in the jamb. It is the fastest replacement method because there is no demolition and no stucco or drywall repair. It works on any opening where the original frame is still solid and square.
Who offers Insert Window Replacement near me in Los Angeles?
American Reliable Windows & Doors installs insert windows across Los Angeles County, from Sherman Oaks and Woodland Hills to Santa Monica, Pasadena, and Beverly Hills. Call +1 (747) 298-4287 and we will schedule a free measure, usually within two to three business days. We serve ZIP codes including 91367, 90291, 90292, 91316, and 91311.
Is Insert Window Replacement cheaper than full frame in Los Angeles?
Yes, usually by 30 to 50 percent. An insert reuses your existing jamb and trim, so you skip demolition, reframing, stucco patching, and interior repainting. A full frame replacement is the right call when the frame is rotted, water-damaged, or out of square. We inspect the frame at measure and tell you which one your home actually needs.
Related Services
Full Frame Window Replacement
When the jamb is rotted or out of square, an insert will not hold. Full frame replacement removes the entire window down to the rough opening and rebuilds it. We quote this whenever our measure turns up frame damage that would make an insert fail.
View Full Frame Window ReplacementRetrofit Window Replacement
Retrofit is the middle path: a new unit sized to the existing opening with a trim kit that covers the old jamb line. It is a good fit for Los Angeles homes where the frame is sound but the interior trim is dated and you want a cleaner finish.
View Retrofit Window ReplacementWindow Sash Replacement
If only the moving sash is failing and the frame and track are fine, sash replacement is the cheapest fix. We match the sash to your existing jamb, which keeps the original look on older Los Angeles bungalows where the trim is worth saving.
View Window Sash ReplacementDouble Hung Window Replacement
Double hung is the most common insert we install. Both sashes slide and tilt in for cleaning, which matters on two-story homes in Sherman Oaks and Encino. We stock standard sizes and can order custom dimensions in two to three weeks.
View Double Hung Window ReplacementSingle Hung Window Replacement
Single hung units cost less than double hung and work well in bedrooms and hallways where you only ever open the bottom sash. They install as inserts just as fast, and the savings let you put more budget into glass upgrades on the windows that face the street.
View Single Hung Window ReplacementCasement Window Replacement
Casement windows crank open for full ventilation and seal tighter than sliders when closed. They are popular in kitchens and hillside homes where you want airflow without losing wall space. We install them as inserts when the existing frame is square and sound.
View Casement Window ReplacementContact American Reliable Windows & Doors
Call +1 (747) 298-4287 or email us and we will get you on the schedule. We answer the phone seven days a week and can usually book a same-day estimate if you reach us before noon. Tell us how many windows, what material you are leaning toward, and whether anything is broken or leaking.
American Reliable Windows & Doors
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Phone
+1 (747) 298-4287 -
Address
6161 Van Nuys Blvd Van Nuys, CA 91401, Los Angeles, California
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Hours
Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available