Whole-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.
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AfterFast, Reliable Duct Sealing Across Pico Rivera
Duct sealing in Pico Rivera typically runs $800 – $2,400 for a whole-home system, depending on whether we’re patching accessible joints or reworking original galvanized ductwork in a 1950s attic. Most jobs take one day, and you’ll get a written price before we touch anything. Call (361) 326-5060 for a free estimate.
We’ve been sealing ducts in Pico Rivera long enough to know the difference between a quick tape job and a repair that lasts. The 1950s ranch homes along the west side near the Rio Hondo channel, the bungalows near historic downtown, and the mid-century tracts north of Whittier Boulevard all present different challenges. Our crews serve Pico Rivera from our Los Angeles office, and we know which attics hit 140°F in July and which crawlspaces hold winter moisture from the marine layer that rolls in off the coast.
Why Hollis Air Duct Cleaning Is Pico Rivera’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004. That’s a track record that predates most of the duct cleaning outfits advertising in Pico Rivera today. We don’t compete on the lowest teaser price. We compete on showing up inside the window, pricing in writing, and leaving the site clean. That’s The Garrison Standard, and every Hollis location is independently owned and operated under it.
Our Pico Rivera customers aren’t looking for the cheapest bid. They’re looking for the bid they can trust. Roy Castellanos leads our operation, and our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. The price we write down before any work starts is the price you pay. No ballooning at the door.
Every repair we make carries our 365-Day Done Right Promise. If the work fails within a year, we come back and make it right at no charge. That includes a free second visit. We put that in writing on every job, not just say it.
Our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday.
Duct Insulation in Pico Rivera
Duct Insulation in Pico Rivera addresses a problem most homeowners don’t know they have: uninsulated metal ducts running through attics that swing from 50°F winter mornings to 140°F summer afternoons. In a city where the marine layer brings heavy dew and occasional fog, then inland heat bakes that moisture away, bare galvanized steel sweats. That condensation rusts the metal, loosens mastic seals, and creates the damp conditions where microbial growth takes hold.
We insulate with formaldehyde-free fiberglass wrap or closed-cell foam, depending on access and the condition of the existing ductwork. The goal is to keep the air inside your ducts at the temperature your HVAC system intended, not the temperature of your attic. In Pico Rivera’s 1950s tract homes, this often means wrapping supply lines that were never insulated when the house was built, and adding vapor barriers to prevent the condensation-corrosion cycle that’s noticeably milder just a few miles east or west.
When Insulation Beats Sealing Alone
Some Pico Rivera homes have ducts that are structurally sound but thermally naked. Sealing the joints won’t stop the sweating. We camera-inspect first. If the metal is intact but unwrapped, insulation is the right fix, and we’ll tell you so.
Attic Access Challenges in Older Homes
Many Pico Rivera attics have limited clearance, especially the post-WWII ranches with shallow roof pitches. Our crews carry low-profile equipment for these spaces. We don’t skip ducts because they’re hard to reach. We find a way to get to them.
HVAC Duct Sealing in Pico Rivera
HVAC Duct Sealing in Pico Rivera is often retrofit work. The city’s housing stock, mostly 1950s-60s single-story ranch-style tract homes, was built for gravity furnaces or swamp coolers. Many were later converted to central air without updating the original galvanized steel ductwork. That metal is prone to rust and leaks, and the seams were never designed for the pressure of a modern forced-air system.
We seal with duct mastic, a water-based compound that remains flexible and fills gaps that tape can’t handle. For larger separations or corroded sections, we may recommend partial replacement with galvanized or flex duct, always with a written price before we start. A typical HVAC duct sealing job in Pico Rivera runs $800 – $1,800 for joint sealing and mastic application on accessible ductwork, and $1,500 – $2,400 if we’re replacing corroded sections or reworking return ducts in a hot attic.
Negative-Pressure Containment
We set the system under negative pressure with HEPA filtration at the air handler before we disturb anything. In Pico Rivera’s older homes, decades of dust and baked particulate line the ducts. Without containment, agitation just re-deposits that material in your supply and return lines. We don’t skip this step.
Return Duct Priority
Leaky return ducts in unconditioned spaces are the hidden problem in many Pico Rivera homes. They pull hot attic air, dust, and moisture directly into your system. We always inspect returns, not just the supply registers you can see from the hallway.
Trusted Brands We Service in Pico Rivera
Our equipment roster includes Nikro negative-air machines and filtration products from Honeywell and Aprilaire. We stock parts and materials locally for Pico Rivera customers, which means faster turnaround when a job needs something specific. The Nikro units we use for containment are the same machines commercial crews run on larger buildings, scaled to residential work. Honeywell and Aprilaire filtration components integrate with most existing HVAC systems, so we’re not forcing a retrofit that doesn’t fit your setup. Every tool choice gets explained in plain terms on the job, not buried in a technical sheet you never see.
Common Duct Sealing Problems We See in Pico Rivera Homes
- Rusted galvanized seams in original 1950s ductwork. The post-war tract homes near the Rio Hondo channel often still run their original supply and return ducts. The metal corrodes at the joints, and a tape-over repair fails within a season because the rust continues underneath.
- Condensation damage from uninsulated attic runs. Pico Rivera’s position in the San Gabriel Valley creates that marine-layer-then-heat cycle. Bare metal ducts in 140°F attics sweat, rust, and loosen seals. Sealing without addressing the thermal envelope is a temporary fix.
- Gravity-furnace ductwork retrofitted for central air. The original ducts were sized for natural convection, not forced air. The higher pressure blows leaks open at seams that held fine for decades. We see this in owner-occupied homes where the same family has lived since the 1960s.
- Ash and particulate infiltration after Santa Ana wind events. Wildfire ash finds its way into leaky return systems, then gets distributed through the house. Sealing the returns stops the inflow, but only if the technician checks the attic lines, not just the register boots.
Pricing for Duct Sealing in Pico Rivera, CA
A typical duct sealing job in Pico Rivera runs $800 – $2,400. Joint sealing and mastic application on accessible ductwork falls at the lower end, $800 – $1,800. Jobs requiring section replacement, return duct rework in hot attics, or insulation addition run $1,500 – $2,400. We don’t quote per-vent prices. We price per system, in writing, before any work starts. The price does not move at the door.
What moves the number: how much of the ductwork is accessible, whether we’re sealing existing metal or replacing corroded sections, and whether insulation is part of the scope. We camera-inspect first, so you know what you’re paying for and why. Estimates are free. Call (361) 326-5060.
We Also Serve Cities Near Pico Rivera
Our crews work throughout the San Gabriel Valley and surrounding communities. We regularly seal ducts in Pico Rivera and nearby Montebello, Santa Fe Springs, Whittier, and Bell Gardens. If you’re unsure whether your address falls in our service area, call and we’ll confirm.
Serving Pico Rivera, CA - Our Local Coverage Area
We’re based in the Pico Rivera 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 Duct Sealing in Pico Rivera
Pico Rivera’s unique position about 10 miles inland creates a condensation-corrosion cycle that’s milder a few miles east or west. Winter marine-layer moisture hits bare metal ducts, then summer attic heat bakes that moisture away, leaving rust and loosened seals. Sealing interrupts that cycle by closing the entry points where humid air contacts the metal. Call (361) 326-5060 for a free inspection.
No. Fogging a sanitizer into ducts leaves the underlying moisture source untouched. In Pico Rivera’s 1950s homes, the growth feeds on condensation at rusted, leaky seams. The fix is source removal plus sealing: break the baked dust crust, remove the corrosion, seal the joints, and stop the condensation cycle. We don’t sell fogging upsells. Call (361) 326-5060 and we’ll show you what the camera sees.
It depends on the metal’s condition. We’ve sealed original galvanized ductwork in Pico Rivera homes that was structurally sound but leaky at the seams. If the rust has perforated the metal or the seams have separated beyond repair, we recommend section replacement, always with a written price before we start. We camera-inspect to give you a real answer, not a guess. Call (361) 326-5060 to schedule.
We pressure-test after sealing to verify leakage reduction, show you before-and-after photos from the camera inspection, and leave you with a written invoice detailing what was sealed and the 365-Day Done Right Promise. If a joint fails within a year, we return at no charge. No vague guarantees. Specific work, specific coverage, in writing. Call (361) 326-5060 with questions.
It affects whether sealing is urgent. Ash and fine particulate infiltrate through leaky return ducts, especially in homes with attic return lines. Sealing the returns stops the inflow. If you’ve noticed dust accumulation after wind events, that’s often a sign your return system is pulling unfiltered air from the attic or crawlspace. We check this on every job. Call (361) 326-5060 for an estimate.
On a ranch-style home near the Rio Hondo channel, our tech camera-inspected the original galvanized supply and return ducts and found heavy rust scale at the seams and a microbial film on the return trunk. We set the system under negative pressure with HEPA filtration at the air handler, used agitation tools to break the baked dust crust off the metal, then sealed the leaking joints – cutting the condensation cycle that was feeding the growth. No fogging ‘sanitizer’ upsell needed; the fix was source removal plus sealing. That’s how our Duct Sealing team works. We don’t mask problems. We fix them at the source.
Ready to stop throwing conditioned air into your attic? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate on duct sealing in Pico Rivera. We’ll camera-inspect your system, explain what we find in plain terms, and give you a written price before any work starts. Every job is backed by our 365-Day Done Right Promise: if it’s not done right, we make it right, including a free second visit.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Pico Rivera and the San Gabriel Valley.