Duct Sealing in Burbank - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Burbank

Duct sealing in Burbank typically runs $450 – $1,200 for a whole-home system, with most 1940s – 1960s ranch homes falling in the $650 – $900 range. We’re usually on-site within 24 – 48 hours of your call, and every job starts with a written price that doesn’t move once work begins. Call (361) 326-5060 for a free estimate.

Call (361) 326-5060

We’ve been sealing ducts across the San Fernando Valley long enough to know Burbank isn’t like neighboring Glendale or West Hollywood. The post-war ranch tracts off Burbank Boulevard and in Magnolia Park carry original round galvanized trunk lines from the Lockheed and Disney boom years, and Hollywood Burbank Airport’s flight path loads those same ducts with fine black jet-exhaust soot that standard sealing alone won’t fix. Our crews dispatch from the Los Angeles office and serve Burbank locally, which means we understand the combination of aging galvanized steel, converted gravity wall furnaces, and Santa Ana wind events that define ductwork failure here.

Why Hollis Air Duct Cleaning Is Burbank’s Preferred Duct Sealing Company

Hollis Air Duct Cleaning, founded in 2004 as part of the Garrison Partners family, brings The Garrison Standard to every Burbank job: arrive inside the quoted window, price in writing before touching equipment, complete the work by the book, and leave the site clean. Our Duct Sealing in Burbank crews are background-checked and uniformed, and our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues.

Burbank homeowners choose us because we’ve seen what happens when sealing is done wrong on their specific housing stock. The 365-Day Done Right Promise covers every repair in writing: if the work fails within a year, we return and make it right at no charge, including a free second visit. That matters on a 1948 ranch with original galvanized ducts that have already survived seventy-plus years of Valley heat.

Our equipment roster includes Rotobrush rotary brush systems, Nikro negative-air machines, and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman. These are the same tools commercial crews use, not hardware-store gear, and our technicians explain what each does for your air before starting work.

Duct Insulation in Burbank

Duct Insulation in Burbank addresses a specific problem created by the city’s climate and housing age: attic and crawl-space duct runs that bleed conditioned air through thin or degraded wrap, forcing HVAC systems to run longer during the 100°F-plus summers that stretch from June through October. For a typical Burbank ranch home with 1,200 – 2,000 square feet, adding or replacing duct insulation runs $800 – $1,800 depending on linear footage, accessibility, and whether the existing wrap contains asbestos-era materials common in pre-1970s builds.

When Attic Heat Destroys Efficiency

Burbank attic temperatures regularly hit 140°F in July and August. Uninsulated or poorly insulated flex duct or sheet metal in that environment loses 20 – 30% of cooling capacity before the air reaches your registers. We measure this with a temp gun at the plenum and at the farthest register, then specify insulation R-value based on what the calculation shows.

Asbestos-Wrap Assessment

Homes built before 1970 in the Rancho and Victory areas sometimes carry original duct wrap with asbestos-containing material. We identify this during camera inspection, flag it for proper abatement referral, and install new fiberglass or foil-faced insulation only after safe removal. This is not a corner to cut, and we don’t.

HVAC Duct Sealing in Burbank

HVAC Duct Sealing in Burbank is the core repair for the cracked mastic, failed tape joints, and separated connections that draw attic dust, wall-cavity debris, and outdoor contaminants into your airflow. For a complete system seal on a typical Burbank home, expect $450 – $1,200; smaller partial repairs on accessible trunk lines start around $350. Every quote is written and agreed before work begins.

The Source-Removal-First Rule

On Burbank’s 1940s – 1950s galvanized systems, we never seal before removing contamination. Mastic applied over Lockheed-era soot and airport jet-exhaust film traps that contamination against the metal. It re-enters supply and return airflow within weeks. Our Duct Sealing protocol runs negative pressure with HEPA filtration, agitates loose debris with rotary tools, then seals clean metal.

Mastic and Mesh on Galvanized Steel

Standard foil tape fails on Burbank ductwork. The dry, 100°F-plus summer attic heat and Santa Ana wind thermal cycling cause tape to lift off round galvanized trunk lines, reopening the exact leaks that were sealed. We use water-based duct mastic reinforced with fiberglass mesh, rated for the temperature swings and UV exposure common in Valley attics.

Trusted Brands We Service in Burbank

We stock parts and maintain equipment relationships that keep Burbank jobs moving without waiting on shipping. Our van inventory includes sealing and filtration products from Honeywell, Aprilaire, and Guardsman, plus rotary and negative-air systems from Rotobrush and Nikro for the source-removal phase that must precede sealing on older galvanized systems. When a Magnolia Park homeowner needs a specific plenum transition piece for a converted gravity wall furnace, we typically have it or can source it within 24 hours through our Los Angeles supply chain. No “we’ll come back next week.” The job gets done in one visit when possible.

Common Duct Sealing Problems We See in Burbank Homes

• Sealing over contamination instead of removing it first. We see this on converted gravity wall furnace systems in 1940s ranches: a previous contractor smeared mastic over decades of Lockheed-era soot. Within a month of Santa Ana winds, black dust streaked across supply registers again. The seal looked fine. The air wasn’t.
• Foil tape failure in attic heat. Burbank’s attic temperatures destroy standard foil tape in 12 – 18 months. We find lifted tape on galvanized round trunk lines in Rancho and hillside homes every week. The tape was cheap. The redo costs more than doing it with mastic the first time.
• Missed plenum transitions on retrofitted systems. When a gravity wall furnace gets converted to central air, the original furnace plenum and the new air handler transition are common leak points. Camera inspection finds these; visual-only estimates miss them. We seal what we can see and what we can’t.
• Santa Ana wind infiltration through return leaks. Burbank’s fall Santa Ana winds pressurize attics and crawl spaces, forcing fine dust through any return duct leak. Sealing returns is as important as sealing supplies, and we test both sides of the system with a duct blaster when the job scope warrants it.

Pricing for Duct Sealing in Burbank, CA

We Also Serve Cities Near Burbank

Our crews work throughout the San Fernando Valley and surrounding communities, including Burbank, Glendale, West Hollywood, Altadena, and Beverly Hills. Scheduling and dispatch are coordinated from our Los Angeles office, with local technicians serving each area. Same standards, same written pricing, same 365-Day Done Right Promise.

FAQs About Duct Sealing in Burbank