Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Impact Windows & Doors Across Lennox
Impact window and door work in Lennox carries one question no other city asks: was your home part of the LAX Residential Sound Insulation Program? We ask it on every estimate because if your house went through RSI, the replacement glass has to match or beat the original acoustic rating, not just the wind code. TruePane Windows & Doors installs hurricane-rated windows and doors across Lennox with both benchmarks in view: Miami-Dade wind-load compliance and real decibel reduction for homes under the flight path. Call (888) 635-0804 for a free, written estimate.
Our crews know Lennox block by block. We work on the 1940s wood-frame duplexes off Hawthorne, the stucco rentals between Century and Imperial, the small-lot single-family homes near Lennox Park. When we price an impact install here, we account for the real condition of the opening: corroded jambs, undersized framing, original single-pane aluminum sliders, and the flashing details that decide whether a job passes wind-mitigation inspection. That is the difference between a generic window quote and one written by a company that has actually opened Lennox walls.
Why TruePane Windows & Doors Is Lennox’s Preferred Impact Windows & Doors Company
TruePane was founded in 2008 by second-generation glazier Dale Kessler. The company carries more than years of combined craft tradition, and Dale still runs the floor with one rule: if the pane is not true, the job is not done. That standard matters on Lennox jobs where the original opening is rarely square and the elevation faces ocean air, not just jet noise.
Lennox homeowners consistently tell us the same three things. They want the quote on paper with both warranty layers registered before the truck leaves, they want someone who knows whether the rough opening will need reframing before the job starts, and they want a phone answered by a person, not a recording. On all three, we do it the same way every day: background-checked, uniformed technicians, a live person answering (888) 635-0804 around the clock, and the Done Right Promise on every install. If it isn’t done right, we make it right. No paperwork fight, no fine print that covers neither.
Our Impact Windows & Doors Services in Lennox
Hurricane Impact Windows
Impact windows in Lennox do two jobs at once: they hold the building envelope under high wind loads and cut LAX approach noise. We primarily install fusion-welded frames with double-pane insulated glass units and argon fill from PGT and ES Windows, quoted side by side on paper so you see exactly what you are buying. On older Lennox homes, we inspect every rough opening before pricing because original 1940s framing is often undersized for a modern impact unit. Impact Windows & Doors installs have one standard here: square, sealed, and rated for wind and sound before the trim goes on.

Impact Sliding Glass Doors
Sliding glass doors in Lennox take abuse from both directions: marine-layer corrosion on west-facing elevations and the constant push of wind off the coastal plain. A 1950s aluminum slider often has a jamb corroded enough that the rough opening has drifted out of square. We reframe when needed, install an impact-rated frame with insulated glazing, and flash the perimeter to tie into adjacent RSI-installed windows so the whole wall meets wind-load and acoustic benchmarks together. No stopgap caulking, no slider that binds in July.

Wind Mitigation & Code Compliance
Lennox falls under Los Angeles County building code for wind-borne debris regions. Impact window and door replacements here require a permit, and the inspection looks at product approval numbers, anchoring, and flashing, not just glass thickness. We pull the permit, schedule the inspection, and stand on site while it happens. Every install leaves with the manufacturer’s written wind-load and design-pressure documentation, plus both warranty layers registered in writing. If a Lennox homeowner is financing or insuring the upgrade, that paperwork is what the lender and carrier ask for first.

Impact Entry & French Doors
Entry doors on Lennox homes are frequently the original hollow wood or thin aluminum units that predate any impact standard. We install steel-reinforced and fiberglass impact-rated entry doors with multipoint locking hardware, and French door systems with impact glazing when the opening layout supports them. For duplex lots with tight side yards, we also handle the swing-clearance and egress check before any door is ordered, so the permit passes on the first inspection.

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 Lennox
TruePane is an authorized installer for more than a dozen manufacturer lines. For Lennox homes we commonly quote PGT and ES Windows for impact glazing and CWS for corrosion-resistant coastal hardware. Because so many Lennox homes carry RSI-installed assemblies, we keep a current library of STC and OITC test data for the units we recommend, so a homeowner can compare the acoustic rating of a replacement against what was installed under the program. Parts and replacements are ordered direct from the manufacturer, not through a third party, which keeps turnaround short and the warranty chain clean.
Common Impact Windows & Doors Problems We See in Lennox Homes
- RSI windows replaced with off-the-shelf impact units that meet wind code but miss the original STC rating. The new window passes the permit and the room gets louder than before the swap. We check the original acoustic spec before quoting anything on an RSI home.
- Undersized or rotted rough openings from original 1940s construction. A standard impact window will not seat correctly in these openings, and forcing it voids the manufacturer warranty. We price reframing as a line item, not a surprise.
- Corroded aluminum frames on west-facing elevations. Ocean air accelerates pitting on frames and hardware a couple of miles from the coast. We see fogged insulated glass units on these walls three times more often than on east-facing ones, and a seal failure on an impact unit is a code compliance question, not just a cosmetic one.
- Replacement windows that do not tie into existing RSI flashing details. The old assembly has a specific tape-and-flash sequence, and a new window installed without matching it becomes the weak spot in the wall. Our crews photograph the interface before and after so the record is on file.
Pricing for Impact Windows & Doors in Lennox, CA
A typical impact window replacement in Lennox runs $1,150 to $2,400 per opening installed, depending on size, frame material, and whether the rough opening needs reframing. Reframing on older Lennox homes typically adds $300 to $700 per opening. Impact sliding glass doors in Lennox run $4,500 to $8,500 installed, with the higher end covering corroded-jamb rebuilds and custom sizing on 1940s openings. Impact entry doors run $2,800 to $5,600. For comparison, the same window spec in Ladera Heights, a mile east, often prices within a few hundred dollars, but Lennox jobs carry a higher allowance for marine-corrosion repair simply because the housing stock is older and closer to the coast.
We write every Lennox estimate with a line for visible work and a written allowance for what the wall may show once it is open. That allowance is fixed in the contract before we start. If what we find under the stucco matches the allowance, the price does not move. You will not get a change-order call two hours into the job. Call (888) 635-0804 to schedule your free estimate, and if you have a Lennox home with RSI-installed windows, tell us on the call. It changes the glass spec, and we would rather know before we quote.
We Also Serve Cities Near Lennox
While most of our Lennox work stays between Imperial and Century, our crews also run impact window and door installs in Lennox neighborhoods like the streets directly under the approach path, and we regularly serve Parkway, Arden-Arcade, Ladera Heights, and Commerce. Dispatch and scheduling are coordinated from our Los Angeles office, and crews stationed locally keep response times short across the entire service area.
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 - Impact Windows & Doors in Lennox
An RSI-installed window carries a manufacturer label on the frame or sash, typically with an STC rating between 39 and 42, and many Lennox homes that went through the LAX Residential Sound Insulation Program have the original paperwork in a transfer file from LA World Airports. If you cannot find a label, take a photo of the window’s edge profile and glass spacer; our field team can identify RSI-installed units by their frame extrusion and glazing package. Yes, it changes the replacement spec: the new impact window must meet or exceed the original acoustic rating or you will finish the job with more jet noise than you had before. Call (888) 635-0804 and we will check the existing assembly before we quote.
Because most Lennox homes were built between 1940 and 1965 with rough openings sized for single-pane aluminum sliders, not modern double-pane impact units, and decades of marine-layer moisture have often left the jambs too corroded or out of square to seat a new frame properly. Reframing is not an upsell; forcing an impact window into an undersized opening voids the manufacturer warranty and fails the wind-load inspection. We price the reframing as a line item on the estimate, so it is in writing before work starts. For an exact quote on the openings in your Lennox home, call (888) 635-0804.
Yes, but the reduction depends on the glass package, not just the impact rating. A standard impact window with 5/16-inch laminated glass and a secondary pane will reduce approach noise noticeably, but it may not match the STC 39 to 42 performance of an RSI-installed assembly unless we specify the right laminate thickness and insulating glass configuration from the start. We quote the acoustic data side by side with the wind-load data so you can see both numbers on the same page. If you live under the flight path in Lennox and want the noise reduction documented before you sign, call (888) 635-0804 for a free estimate.
Fog between the panes means a seal failure in the insulated glass unit, and on an impact-rated window, a failed seal degrades the unit’s designed performance, including the laminate interlayer that holds the glass together under wind load. It is not automatically a code violation in Lennox, but it is a warranty and performance issue that should be addressed before the next coastal storm cycle, because a failed unit also passes more noise and heat than the label claims. If the fogging is on an RSI-installed unit, we recommend a replacement that restores both the acoustic and impact ratings. Call (888) 635-0804 and we will inspect the unit in person.
Yes. Lennox falls under Los Angeles County building jurisdiction, and impact window and door replacements require a building permit with a final inspection verifying product approval numbers, anchoring, and flashing. Wind-mitigation upgrades through the permitting process may also trigger a structural review if the openings are enlarged or reframed. TruePane pulls the permit, schedules the inspection, and stands on site while it happens, and we leave you with the full permit record and manufacturer documentation when the job closes. For a written quote that includes permit fees and inspection scheduling for your Lennox home, call (888) 635-0804.
Call TruePane Windows & Doors at (888) 635-0804 to schedule a free estimate for impact windows and doors in Lennox. A live person answers, and the quote is written, line by line, with both warranty layers registered before the truck leaves the driveway.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Lennox with impact windows and doors built to the Keystone Standard.



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