Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Chimney Company in Lennox, CA
Chimney repair in Lennox usually comes down to catching neglect on older 1940s – 1960s stucco homes and low-rise apartment buildings before a cracked crown or missing spark arrestor becomes a water or fire problem. Lennox is a dense, unincorporated LA County pocket near LAX, and most chimneys here sit mostly unused, so the damage we find is rarely from heavy burning. It’s from years of weather, birds, and deferred maintenance. If you need an honest assessment of a Lennox chimney, call Ontario Chimney at (833) 467-7685.
Why Lennox Homes Are Different
Lennox is mostly single-story stucco tract and postwar housing built between the 1940s and 1960s, plus small low-rise apartment buildings on narrow lots. That changes how we work. Roof access often means a ladder placed off a driveway or tight side yard, not a wide open lawn. Reaching a chimney on a shared-wall multi-unit building can mean coordinating with a property manager and working around roof penetrations for plumbing vents and parapet walls.
The climate matters too. Lennox gets mild, dry coastal air with little heating-season demand. Fireplaces here are lit on cool winter evenings or for ambiance, not for survival. That means creosote buildup is usually light to moderate, but chimneys here often go uninspected for years. Dry Santa Ana wind events and regional wildfire risk make a missing spark arrestor a genuine concern. In this rental-heavy area, a fireplace often gets checked only when a unit changes tenants or a home is sold. By then, a cracked crown or blocked flue has often been waiting a while.
Ontario Chimney has served Lennox since 2014.
Styles & brands we work with





Our Main Lennox Services
Most Lennox homeowners start with one of two calls: a fireplace that hasn’t been cleaned in years, or a dryer vent that’s never been checked. Both are maintenance and safety issues, and both are jobs we handle as a dedicated venting and chimney company, not an add-on afterthought.
Chimney Sweep in Lennox
Even a fireplace that’s used a handful of times each year deserves an annual or every-other-year sweep, especially in Lennox where flues often sit dormant for long stretches. We remove creosote, clear bird nests and soot blockages, and check the spark arrestor and crown while we’re up there. Tight lot access is normal here, so we come prepared for driveway ladder placement and multi-tenant roof work. See our Chimney Sweep in Lennox page for how a typical Lennox sweep works and what it costs.

Dryer Vent Cleaning in Lennox
Dryer vents are a leading cause of house fires, and in Lennox’s older housing stock, many vents are long, kinked, or venting into attics and crawl spaces. We clean the full run from dryer to exterior cap, install or replace termination caps if needed, and verify airflow. Multi-unit buildings in Lennox often have several vents stacked in one chase, and we handle those as a single scheduled visit. See our Dryer Vent Cleaning in Lennox page for details on what we check and typical Lennox pricing.

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.
Chimney Repair in Lennox

Chimney repair in Lennox is usually a masonry or flashing problem on a home or apartment building that hasn’t been touched since it was built. We find cracked crowns letting water into the chimney chase, rusted or missing caps, and flashing that’s pulled away from the roofline after decades of coastal air and occasional Santa Ana gusts. The good news is most of what we see in Lennox is repairable without tearing the whole chimney down. Our Chimney Repair team handles everything from a simple cap swap to a full flue reline.
Chimney Cap Installation
Signs you need it
Rain is getting into the fireplace, birds or rodents are nesting in the flue, or you can see daylight where a cap should be.
What it costs in Lennox
Chimney cap installation in Lennox typically ranges from $180 to $390 depending on flue size and access.
How we do it
We measure the flue opening, match the correct Famco or Gelco cap size, secure it to the flue top, and verify the spark arrestor mesh is intact.
Chimney Flashing Repair
Signs you need it
Water stains appear on the ceiling or wall near the fireplace, or tar and caulk around the chimney base are cracked and separating.
What it costs in Lennox
Flashing repair in Lennox typically runs $250 to $600 depending on whether we cut in new step flashing or reseal the existing metal.
How we do it
We remove the old sealant, install or reset step and counter flashing, apply a fresh sealant bed, and confirm the waterline is broken before we leave.
Chimney Crown Repair
Signs you need it
The concrete or mortar surface on top of the chimney has visible cracks, spalling, or missing chunks that let water soak into the masonry.
What it costs in Lennox
Crown repair in Lennox ranges from $300 to $700 depending on whether we seal cracks or rebuild the crown surface.
How we do it
We clean the crown, fill or rebuild it with the proper crown material, and apply a weather sealant that holds up against coastal moisture and dry heat.
What Chimney Repair Costs in Lennox
| Item | Typical range in Lennox |
|---|---|
| Chimney cap installation | $180 – $390 |
| Chimney flashing repair | $250 – $600 |
| Chimney crown repair | $300 – $700 |
Do I need a new chimney liner, or can it wait?
Most Lennox chimneys that flag a liner concern were never checked at sale. We inspect with a camera and show you what we’re seeing, then give you options including HeatShield resurfacing when the flue is repairable. Call (833) 467-7685 for an exact quote.
How do I know if my Lennox chimney is safe to use?
The short answer is you don’t until someone looks. Cracked crowns and missing caps can hide serious problems behind intact brick. We document everything with photos and tell you plainly whether the fireplace can be used now or needs work first.
Brands We Service in Lennox
We stock and install components from Famco, Copperfield, DuraFlex, and HeatShield, the same professional-grade materials certified chimney technicians specify. Parts for most Lennox repairs are on the truck or available same week, so we don’t leave a Lennox job half-done waiting on backordered parts. See our brands page for the full lineup.
See the difference
Before
After
Before
After
Before
AfterPricing for Chimney Company in Lennox, CA
| Service | Typical range in Lennox |
|---|---|
| Chimney sweep (visual inspection included) | $180 – $340 |
| Dryer vent cleaning | $120 – $250 |
| Chimney cap installation | $180 – $390 |
| Chimney cap replacement | $180 – $390 |
| Chimney liner installation | $2,500 – $5,000 |
| Chimney flashing repair | $250 – $600 |
| Chimney crown repair | $300 – $700 |
| Chimney liner repair (HeatShield resurfacing) | $1,500 – $3,000 |
What pushes price up in Lennox is roof access. Tight side yards, shared walls, and multi-story apartment buildings can mean extra ladder time or a roof hatch entry instead of a straight ladder off the driveway. We give you an upfront price before any work begins, and we don’t surprise you with change orders after we’re on the roof.
Neighborhoods We Serve in Lennox
Lennox is compact and unincorporated, so most neighborhoods run into each other without hard boundaries. Homes along Inglewood Avenue, Lennox Boulevard, and 104th Street make up the residential core, with multi-unit buildings mixed in throughout. We cover all of Lennox and typically schedule within a week.
- Lennox Boulevard corridor
- Inglewood Avenue residential blocks
- 104th Street and surrounding postwar tracts
- Near Lennox Middle School
- Multi-unit buildings across the 90304 ZIP
Service Area – Cities Near Lennox
Lennox sits between several South Bay and LA County cities, so we often extend our route to cover neighboring areas. If you’re in Del Aire, CA, Hawthorne, CA, Inglewood, CA, or El Segundo, CA, we can schedule a visit as part of our regular route through the area. Same team, same professional-grade materials.
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 Chimney Company in Lennox
We typically schedule Lennox visits within about a week, sometimes sooner if we’re already routed through the Inglewood or Hawthorne side. Call (833) 467-7685 and we’ll give you the next available window directly, not through a call center.
Most sweeps and cap repairs don’t require a permit, but structural work like a full rebuild or major flue reline can trigger county building review in unincorporated LA County. We’ll tell you if your repair crosses that line before we start.
Yes. We regularly work with landlords and property managers in Lennox to inspect and sweep multiple flues in a single visit. We document each unit with a written report and photos, so you have records for tenant files and property sale disclosures.
If you need a straight answer about your Lennox chimney, call Ontario Chimney at (833) 467-7685 for a free estimate. We’ll tell you what we found, show you the evidence, and give you options.
What happens when you call
- 1A real person answersNo phone trees — talk to a local chimney cleaning 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
"Liner was cracked in two places. He walked me through the repair options honestly, including the one that was cheaper for him and better for me."
— Eric Tran"Swept it, capped it, and installed a proper damper. The downdraft smell in the summer that we'd lived with for years is gone."
— David Park"Drop cloths everywhere, HEPA vac, and not a speck of soot on the carpet. I'd been dreading the mess for nothing."
— Bethany Padgett