Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Fast, Reliable Air Duct Cleaning Across San Gabriel
Air duct cleaning in San Gabriel usually costs between $450 and $900 for a full system on a typical 1,200 to 1,800 square foot ranch home. The work takes most of a day, and it should include camera inspection, source removal, and resealing failed joints, not just a quick vacuum pass. We know San Gabriel’s housing stock, and we know what hides in these older duct runs. If you’ve been chasing dust on your furniture or watching summer energy bills climb, call us at (866) 596-7835. We’ll tell you what’s actually going on inside your ducts before we quote a dollar figure.
Why Cobalt Air Duct Cleaning Is San Gabriel’s Preferred Air Duct Cleaning Company
San Gabriel homeowners call us because our entire focus is Air Duct Cleaning, not a side service bolted onto an HVAC tune-up. The homes here, mostly 1950s and 60s tract and ranch builds, have duct systems that were installed before modern sealing standards existed. Many have never been opened since the day they were put in. Larry Reyna built Cobalt around a simple idea: show the homeowner what’s inside the ducts, clean what needs cleaning, and repair what’s failed. That’s why our jobs start with a camera, not a sales script.
We run Rotobrush and Nikro equipment, the same professional-grade systems used in commercial duct remediation, on residential jobs throughout San Gabriel’s 91775, 91776, and 91778 zip codes. Our technicians train on Honeywell, Aprilaire, and Abatement Technologies products, so when we find a filtration or pressure issue downstream of a duct problem, we understand the whole system, not just the sheet metal. We don’t rush a San Gabriel job to get to the next one. The older these homes are, the more careful the work has to be.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Air Duct Cleaning Services in San Gabriel
Air Duct Cleaning Services in San Gabriel means something specific here: opening up 60-year-old galvanized and early flex runs, removing what’s accumulated, and sealing the leaks that let conditioned air escape into the attic. A full system job on a San Gabriel ranch typically runs $450 to $700 when the ductwork is intact. Add camera-documented joint failures, crushed flex sections, or significant contamination, and the range moves to $700 to $900. This isn’t a surface wipe-down. It’s source removal.
Supply and Return Duct Cleaning
We clean both sides of the system. Supply ducts carry conditioned air from the air handler to your registers. Return ducts pull room air back. In San Gabriel’s older homes, returns are often under-slab or run through low-pitch attics where they’ve collected decades of fine dust. We treat each side separately because they fail differently.
Full System Cleaning with Video Inspection
Every full system job includes a camera inspection before and after. You’ll see the before-and-after footage of your own ducts. In San Gabriel, that inspection almost always reveals something the homeowner didn’t know was there: a disconnected joint, a crushed run, a boot that’s separated from the subfloor. We document it, quote the repair separately if needed, and proceed with cleaning once you approve.
HVAC Duct Cleaning in San Gabriel
HVAC Duct Cleaning in San Gabriel goes beyond the ducts themselves. It’s the full pathway: air handler, plenum, trunk lines, branch runs, registers, and boots. On a 1950s ranch in 91775, that pathway is usually original galvanized steel with some early flex sections added during past remodels. A complete HVAC duct cleaning here runs $500 to $850 depending on system size and accessibility, before any structural repairs. Low-pitch attics with blown-in insulation make access tight, which adds labor time compared to newer homes with walkable attic space.
Air Handler and Plenum Cleaning
The air handler and plenum are where the highest air pressure lives, and they’re also where dust, pollen, and debris concentrate after passing through a dirty filter. We set negative pressure at the handler and use mechanical agitation to loosen what’s bonded to the interior surfaces, then extract it through a HEPA-filtered vacuum. Skipping this step is like cleaning your car’s interior while leaving the engine air filter caked.
Return and Boot Resealing
In San Gabriel’s raised-foundation homes, the boots where ducts meet floor registers are a common failure point. The original sealant dries out, cracks, and pulls away. Conditioned air leaks under the house instead of into the room. We reseal boots with Guardsman mastic where the metal is sound, and we’ll show you the gap on camera before we close it.
Trusted Brands We Service in San Gabriel
We work with equipment and filtration brands that San Gabriel homeowners already have in their systems, including Honeywell filters, Aprilaire media cabinets, and Abatement Technologies components. When we find a failed or undersized filter housing during a duct cleaning, we know what to do with it because we train on these products directly. We carry common replacement parts for these brands in our trucks, which means less waiting when a simple fix can be made the same day. A duct cleaning is only as good as the system it’s attached to.
Common Air Duct Cleaning Problems We See in San Gabriel Homes
- Crushed flex runs under blown-in insulation. The 1980s and 90s efficiency retrofits added thick blown-in insulation to low-pitch attics across San Gabriel. That weight crushed original flex duct runs, cutting airflow to rear bedrooms by half or more. We find this on the majority of 91775 and 91776 ranch homes we inspect.
- Disconnected galvanized joints. Original sheet-metal duct sections were joined with slip connections and sheet-metal screws, which loosen after 60 years of thermal expansion and Santa Ana wind vibration. A camera inspection finds the gap fast. Conditioned air pours into the attic while your registers starve.
- Fine dust and pollen loading from inland heat cycles. San Gabriel sits 10 to 15 degrees hotter than coastal LA from May through October. Central AC runs hard for months, pulling fine dust and pollen from the San Gabriel Valley’s dry air into unsealed duct runs. Coastal homes don’t accumulate particulate at this rate.
- Raised-foundation boot corrosion. The crawl spaces under San Gabriel’s raised foundations hold moisture that rises into metal boots and corrodes seams over decades. Once a boot rusts through, the duct cleaning itself won’t fix the leak. We can identify it, quote a repair, and move forward only with your approval.
See the difference
Before
After
Before
After
Before
AfterPricing for Air Duct Cleaning in San Gabriel, CA
A straightforward full-system duct cleaning on a 1,200 to 1,800 square foot San Gabriel ranch runs $450 to $700. When our camera finds what it usually finds in this housing stock, crushed runs, disconnected joints, collapsed boots, the total moves to $700 to $900 because repairs add labor and materials. Homes under 1,200 square feet can land at $400 to $550. Larger properties or systems with multiple returns and long trunk lines may exceed $900. We quote one flat price per system before work starts, agreed in writing, no per-vent pricing and no surprise add-ons once the van is at your door. Call (866) 596-7835 and we’ll walk through what your specific home likely needs.
We Also Serve Cities Near San Gabriel
Our technicians cover the surrounding San Gabriel Valley communities, including East San Gabriel, Rosemead, Temple City, and South El Monte. If you’re in one of these areas, the same camera-first process applies. For details on our broader coverage and what to expect in San Gabriel, give us a call and tell us what you’re seeing in your home.
Serving San Gabriel, CA – Our Local Coverage Area
We’re based in the San Gabriel 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 Air Duct Cleaning in San Gabriel
Every 3 to 5 years is a realistic interval for most San Gabriel ranch homes, assuming the joints and boots are sealed and the system isn’t pulling crawl space air. If you haven’t had the ductwork opened and camera-inspected since the home was built, expect the first cleaning to be heavier. After that first deep clean and any necessary sealing, the 3-to-5-year cadence holds. Call (866) 596-7835 and we’ll help you figure out where your system falls.
Because a cleaning alone doesn’t fix leaks. In San Gabriel’s raised-foundation homes, high bills usually trace back to disconnected galvanized joints, crushed flex under blown-in insulation, or corroded boots under the floor. Air you paid to condition is leaking into the attic or crawl space. If the company that cleaned your ducts didn’t run a camera and didn’t reseal failures, the cleaning only removed dust. We find the structural problem, show it to you on camera, and quote the repair separately. That’s the part that moves the needle on your bill.
Yes. San Gabriel runs 10 to 15 degrees hotter than coastal Los Angeles from May through October, which means your AC moves more air through your ducts every season. Santa Ana wind events push fine particulate from the Valley into homes. That combination loads unsealed ducts faster than coastal systems. If your home is near open land or on a rural-edge property in the 91778 area, expect to clean on the shorter end of the 3-to-5-year window.
It includes camera inspection, negative-pressure extraction, mechanical agitation of all supply and return runs, air handler and plenum cleaning, and a final camera verification. On an older San Gabriel home, it also includes identifying failed joints, crushed runs, and boot corrosion, and quoting those repairs separately if you want them addressed. You’ll see before-and-after footage of your own ducts. Nothing is hidden. Call (866) 596-7835 for a free estimate on your specific system.
Yes. Some San Gabriel properties, particularly on the rural edges and larger lots near the 91778 zip, have detached garages, workshops, or guest quarters with their own small duct systems or mini-split handlers. We clean these as standalone systems, not as afterthoughts. The same camera inspection and source-removal process applies, scaled to the smaller duct volume. If you’ve got a detached system that’s been ignored, call (866) 596-7835 and describe what’s there. We’ll tell you if it’s worth cleaning or if a filter system change makes more sense first.
Call Cobalt Air Duct Cleaning in San Gabriel
If your San Gabriel home has original ductwork that’s never been inspected, start with a camera. We’ll show you exactly what’s inside, clean what needs cleaning, and repair what’s failed so the air you pay to condition actually reaches your rooms. One flat price per system, agreed in writing before we start. Call (866) 596-7835 for a free estimate from Larry Reyna and the Cobalt Air Duct Cleaning team.
Written by Larry Reyna, Owner at Cobalt Air Duct Cleaning, serving San Gabriel since day one.