Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Lennox, CA
Window and door work in Lennox comes with a set of local rules written by LAX, the marine layer, and a housing stock that hasn’t changed much since Eisenhower was president. Westlight Windows & Doors handles replacement, installation, and door work across Lennox, and we’ve learned that a job here rarely starts with a tape measure. It starts with an STC rating, a corroded aluminum frame, or a rough opening that’s 62 years old and half an inch out of square. If you’re weighing a window or door project in Lennox, call (903) 354-7134 and we’ll talk through what your house actually needs.
Why Lennox Homes Are Different
Lennox sits directly beneath LAX’s primary flight paths, and the Los Angeles World Airports Residential Sound Insulation program has already retrofitted a large share of homes here with FAA-funded, STC-rated acoustic windows and doors. Walk into a Lennox house and you’re more likely to find an RSI-installed acoustic unit than an original 1950s window. That changes every calculation. When we replace or install around those units, matching or exceeding the original Sound Transmission Class rating isn’t a preference, it’s a compliance question tied to county documentation. A generic contractor who’s never navigated an LAWA retrofit file can accidentally create a problem that follows the property.
Then there’s the housing stock itself. Lennox is dense with small post-WWII stucco homes built mostly in the 1940s through the 1960s. Many still carry original single-pane aluminum frames, and the high renter-to-owner ratio means a lot of units have never been touched since the original build. Rough openings from mid-century construction run non-standard, so we’re often scribing and adjusting rather than swapping like-for-like. Add the marine layer rolling in from Santa Monica Bay most mornings, especially May through July, and you get a specific combination: corroding aluminum, degrading door weatherstripping, and window frames that swell and stick in ways you don’t see in drier parts of LA County. Lennox work is its own trade.
Our Main Lennox Services
Most Lennox homeowners call us about one of two things: replacing windows that have failed or gone obsolete, and installing new doors that actually seal against the damp morning air. Here’s what each job involves locally.
Window Replacement in Lennox
Replacement in Lennox usually means removing an original 1950s aluminum single-pane or an early RSI acoustic unit, then fitting a new window into an opening that’s rarely square. We carry impact-rated lines from PGT and CGI for homes that want storm protection alongside the acoustic performance, and we document STC ratings carefully when an LAWA retrofit is involved. If the old window carries FAA paperwork, the new one has to meet or beat it. Full details on how we approach that work are on our Window Replacement in Lennox page.

Window Installation in Lennox
New installation is different from replacement. In Lennox it often means cutting into a stucco wall for a new opening, or putting glass into an addition or sunroom where nothing existed before. The marine layer matters here: we flash and seal for a house that’s damp before noon for half the year, so water intrusion is the first thing on our checklist. Whether it’s an ES Windows fixed unit or a full PGT impact package, the install has to hold against moisture and jet noise at the same time. See Window Installation in Lennox for the complete picture.

Door Installation in Lennox
Exterior doors in Lennox take a beating from salt air and damp mornings, and we see weatherstripping fail faster here than in inland neighborhoods. A proper door installation means pulling the old frame, checking the rough opening for rot, and setting a unit that closes tight against the noise from the flight paths. We install Therma-Tru entry doors most often because their sealing systems hold up under coastal air, but we’ll match the right product to the house. The step-by-step is on our Door Installation in Lennox 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 Lennox
We install from eight manufacturer lines, including ViewLux, PGT, CGI, and CWS. That range matters in Lennox because an RSI retrofit house and a 1950s original need different products. Parts for all our lines are stocked locally, so we’re not waiting on a freight truck when a replacement sash or hinge is needed. See our brands for the full list.
Pricing for Window Company in Lennox, CA
| Service | Typical range in Lennox |
|---|---|
| Single window replacement | $180-$340 installed |
| Window installation (new construction) | $450-$1,200 per opening |
| Sliding glass door installation | $1,500-$3,500 |
| Entry door installation | $850-$2,800 |
| Interior door installation | $200-$600 per door |
| Patio door replacement | $1,800-$4,200 |
| French door installation | $1,400-$3,800 |
| Glass replacement (single pane) | $120-$300 |
| Weatherstripping / seal replacement | $90-$250 per opening |
| Full-home window replacement | $8,000-$25,000 |
Prices in Lennox move most on two things: whether the existing window carries an LAWA RSI rating that has to be matched, and how far out of square the original 1940s-1960s rough opening runs. Both take extra time. Every quote from Westlight is a written price before any work starts, and that number does not change at the door.
Neighborhoods We Serve in Lennox
We work across the whole Lennox footprint, from the streets closest to the airport fence to the quieter blocks east toward the freeway. Our crews know which homes carry RSI retrofits, which still have original single-pane frames, and which blocks get the heaviest morning marine layer. Response times in Lennox are short, usually same-day for an assessment and within a few days for a written quote.
- The neighborhood around Lennox Park
- Streets near Lennox Middle School
- The blocks along Hawthorne Boulevard’s east side
- Homes near the 405 boundary
- The residential streets south of Century Boulevard
Service Area – Cities Near Lennox
While this page is focused on Lennox, our crews also cover the surrounding metro. We work in Los Angeles, CA to the north and east, down to San Diego, CA for larger projects, and across San Jose, CA and San Francisco, CA for clients with properties in multiple markets. If your project sits outside Lennox proper, we’ll tell you on the first call which crew covers your street.
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 Company in Lennox
Most Lennox homeowners get a site visit within one to three business days, and we can often look at a project same-week if the schedule is open. Call (903) 354-7134 and our live dispatch team will give you a specific day and a real arrival window, not a four-hour range.
Standard replacement work in Lennox typically moves under the same county rules as the rest of unincorporated LA County, but anything touching an LAWA RSI retrofit may require documentation matching the original STC rating. We handle that paperwork on our end so the county record stays clean. Call us for the specifics on your street.
We cover the entire Lennox footprint, no neighborhood exclusions. If your street shows on a Lennox map, our crews work it. We also schedule around flight noise during the loudest arrival windows when a job requires outdoor cutting or framing, which keeps the work sensible for everyone on the block.
If you’re thinking about windows or doors in Lennox, call (903) 354-7134 for a free estimate. You’ll get a real person on the line, a written price before any work starts, and a company that stands behind the job in writing.
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 Lennox Customers Say
"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"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"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










Before
After
Before
After
Before
After