Window Replacement in Lennox, CA | Westlight Windows & Doors - Westlight Windows & Doors

Window Replacement in Lennox - Free In-Home Measure, Written Price

Free in-home measure and an exact written price before anything is ordered. Energy-rated units, professional installation by our own crews, and a workmanship warranty on the install.

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Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style

Styles & brands we work with

Single hung
Single hung
Double hung
Double hung
Horizontal roller
Horizontal roller
Casement
Casement
Bay & bow
Bay & bow
Sliding glass doors
Sliding glass doors
Entry doors
Entry doors
Impact garage doors
Impact garage doors
PGT
PGT
CGI
CGI

Before & after – our own jobs

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Recent Project
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Full Restoration
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Complete Upgrade

Fast, Reliable Window Replacement Across Lennox

Replacing windows in Lennox means dealing with something most window companies never mention: LAX. Lennox sits directly beneath the airport’s primary flight paths, and many homes here already have acoustically-rated windows installed through LAWA’s Residential Sound Insulation program. That changes how every replacement job starts. When you call Westlight Windows & Doors at (903) 354-7134, we check the Sound Transmission Class rating on your existing units before we quote you a single number. It’s the difference between a window that works and one that leaves you hearing jet noise at 6 a.m. We know Lennox’s stucco homes, its mid-century rough openings, and its marine-layer moisture problems. Owen Satterfield has built our approach around writing the real price down before work starts, showing up in the window we gave, and coming back if something fails. Not someday. Not after you chase us.

Modern floor-to-ceiling black frame sliding glass windows in a bedroom in Lennox, CA

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Why Westlight Windows & Doors Is Lennox’s Preferred Window Replacement Company

Lennox homeowners call us after being burned. A contractor no-showed. A price jumped at the door. A window seal failed six months after install. We hear it on the first phone call, and we answer that call with a live person, any hour. Since 2009, Westlight has operated as an independently owned and operated Kingswell location, and the Kingswell Guarantee is the same on every Lennox job: written price before any work starts, a committed arrival window, a clean job site, and a written guarantee handed to you when the work is done. If a repair fails within the guarantee period, we return and correct it at no charge. That’s the Window Replacement standard we’ve built on, and it’s why homeowners off 105 near the Inglewood border keep our number on the fridge.

Our crews are background-checked and uniformed, so the person at your door is the person we said would be there. We carry eight manufacturer lines, including PGT, CGI, and CWS, so we match the product to the job instead of forcing one brand onto a 1958 stucco house with odd framing. And because Lennox has so many LAWA RSI retrofits, we keep laminated glass interlayers and acoustic-rated components stocked locally. That speeds up replacement work that would otherwise stall waiting on parts.

Window Sash Replacement in Lennox

Window Sash Replacement is what we do when the moving part of your window – the sash that holds the glass and slides or swings open – has failed but the surrounding frame is still solid. In Lennox, this is a common call because the marine layer off Santa Monica Bay keeps mornings damp, and moisture works its way into wood sashes fast. A typical sash replacement in Lennox runs $250 to $650 per sash, depending on material and whether we’re matching an RSI acoustic spec. If your sash is rotted, warped, or the balance system has failed so the window won’t stay open, replacing just the sash beats tearing out the entire frame. We measure the existing unit, check the rough opening for hidden damage, and write your price before the old sash comes out.

When a Sash Makes Sense Over a Full Frame

If the frame is square and the rough opening is dry, replacing the sash alone keeps the job smaller and faster. Lennox homes built in the 1940s and 1950s often have frames that are fine even when the sash is not. We’ll tell you honestly which one you need, because writing a full-frame quote on a job that only needs a sash is not how we work.

Matching Existing Acoustic Ratings

Many Lennox homes carry LAWA RSI windows with documented STC ratings on file with the county. If your sash is being replaced on one of those units, we match the existing rating with a laminated glass interlayer rather than dropping in a standard single-pane sash. Getting this wrong can trigger a compliance issue with FAA program records. It’s a Lennox-specific problem we see weekly.

Window Glass Repair in Lennox

Window Glass Repair in Lennox usually means a fogged insulating glass unit, a cracked pane, or a failed seal on an aluminum frame from the 1960s. You don’t always need a full window replacement when the glass fails. Repairs run $150 to $450 per pane for standard double-pane glass; laminated acoustic glass matching an RSI unit runs higher, typically $300 to $700 per pane. The marine layer accelerates seal failure here because constant moisture from May through July keeps frames damp and expands old aluminum, breaking the seal. We inspect the frame first, because a failed seal often signals a frame that’s already compromised. When we repair the glass, we warrant the work under the same 365-Day Done Right Promise we put on every job.

Fogged Glass and Failed Seals

A fogged unit means the inert gas between the panes has leaked out and condensation has gotten in. It’s not just ugly. The window loses its insulating value and the glass can eventually etch. In Lennox we see this most often on the west and south elevations where afternoon sun hits hardest and the marine layer keeps moisture cycling against the frame. Repair is usually a same-week job for us because we stock the common IGU sizes locally.

Cracked and Impacted Panes

Lennox sees its share of cracked panes, sometimes from debris, sometimes from the vibration and pressure changes of living under a flight path. If your pane is cracked but the sash is otherwise fine, we replace the glass unit and reglaze the opening. For homes with impact-rated PGT or CGI windows, we match the original impact rating and document it. No shortcuts, no compatibility questions later.

Residential window replacement before and after comparison in Lennox, CA

Trusted Brands We Service in Lennox

We install and service eight manufacturer lines, but on Lennox jobs we most often reach for PGT and CGI for impact needs, plus CWS for mid-century frame replacements that need a specific sizing profile. Because so many Lennox homes have non-standard rough openings from the 1940s and 1950s, we keep a range of frame profiles and acoustic interlayers on hand locally. That means when a sash or glass repair comes up, we’re not waiting on a distributor across the country. Your written price comes before any part gets ordered, and the warranty terms are printed on the quote. No vague handshakes.

Common Window Replacement Problems We See in Lennox Homes

  • Non-standard rough openings from mid-century construction. The 1940s-1960s stucco homes in Lennox were built before standardized framing. We regularly find rough openings undersized by an inch or more, which means on-site framing correction before the new window sets. If your quote doesn’t write that allowance in advance, the job stalls.
  • Marine layer moisture damage. From May through July, mornings stay damp, which rots undersized headers and degrades weatherstripping faster than in inland LA County. On a Lennox wood-sash home, this shows up as sticking windows, failed seals, and soft wood behind the trim.
  • LAWA RSI compliance traps. If your home already carries FAA-funded acoustic windows, replacing one without matching the on-record STC rating can trigger a county compliance issue. This only exists at scale in Lennox. We check the record before we touch the frame.
  • Cloth wiring and failed waterproofing behind old frames. Opening up a 1950s Lennox wall often turns up original cloth-insulated wiring and deteriorated tar paper. Both have to be corrected before we set the new window. We write those corrections as allowances in the contract, and we get your written approval before we start.

Pricing for Window Replacement in Lennox, CA

Here’s what real Lennox jobs cost. A standard insert window replacement runs $600 to $1,200 per window installed. A full-frame replacement on a mid-century stucco home with non-standard rough openings runs $900 to $1,800 per window, because we’re reframing, flashing, and waterproofing the opening correctly. Acoustic units matching an existing LAWA RSI STC rating run $1,200 to $2,500 per window, depending on the interlayer and frame spec. Window glass repair runs $150 to $700 per pane, and sash replacement runs $250 to $650 per sash. The price you’re quoted is the price you pay. That’s the Kingswell Way: say the price before the work, show up in the window we gave, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails. Call (903) 354-7134 for your free estimate.

We Also Serve Cities Near Lennox

While this page focuses on Lennox, our crews also handle Window Replacement in Lennox and the surrounding region. Homeowners in Los Angeles, San Diego, San Jose, and San Francisco reach us for the same written pricing and the same Kingswell Guarantee. The marine layer, the mid-century stock, and the acoustic window complications here in Lennox shape how we work everywhere else, too. Call and we’ll schedule your estimate.

Serving Lennox, CA - Our Local Coverage Area

We’re based in the Lennox 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 Replacement in Lennox

Why Lennox Chooses Westlight Windows & Doors

We set the standard for window replacement in Lennox.

Factory-Direct Pricing

Authorized partner pricing with no distributor markup - premium aluminum systems at wholesale-anchored rates.

Engineered to Order

Any shape, size, or specification, fabricated to your exact opening with one-on-one engineering support.

Certified Installation

Set level, plumb, and square to AAMA standards in Lennox - warranty-safe, every time.

How It Works in Lennox

Getting your window replacement handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your window replacement needs and we provide an upfront, transparent quote - no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Lennox - typically within 30-60 minutes, with parts stocked on the truck.

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

What Lennox Customers Say

Trusted by homeowners across Lennox and surrounding areas.

★★★★★

"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 · Verified customer
★★★★★

"Our energy bill in summer was brutal. New windows made a real dent in it. Salesman wasn't pushy and didn't do the fake "today only" discount thing the others tried."

Bethany Oh · Verified customer
★★★★★

"Two bedroom windows that never opened and one that wouldn't stay up. All replaced in an afternoon. The crew was clean, hauled off the old frames, and the quote held."

Colette Rhee · Verified customer

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