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 Phoenix
Phoenix duct sealing typically runs $450 – $1,200 for a whole-home system, and most jobs finish in a single visit. If your utility bills are climbing through summer despite the thermostat never moving, or certain rooms in your Arcadia or Ahwatukee home stay stubbornly warmer than others, the problem is often air leaking from ducts before it ever reaches your vents. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and our Duct Sealing crew works from our Phoenix metro office serving neighborhoods from Sunnyslope to South Mountain. Call (361) 326-5060 for a free estimate with a written price before any work starts.
Why Hollis Air Duct Cleaning Is Phoenix’s Preferred Duct Sealing Company
We’ve been in this trade since 2004, and the Garrison Standard we operate under was built for exactly the kind of customer who lives in Phoenix: someone who’s been burned by a low quote that doubled once the van pulled into the driveway. Every Hollis job gets a written price before we touch anything, and our 365-Day Done Right Promise means if the seal fails within a year, we come back and make it right at no charge, including a free second visit. Our technicians are background-checked, uniformed, and held to The Garrison Code: arrive inside the quoted window, price in writing, complete the job by the book, leave the site clean. Phones are answered by a live person 24 hours a day, 7 days a week, no voicemail loops. That’s not a marketing line; it’s how we keep scheduling straight when monsoon dust walls send homeowners scrambling to check their ductwork.
Duct Repair in Phoenix
Duct Repair in Phoenix means fixing the physical damage that desert conditions inflict on metal and flexible ductwork alike. Our crews regularly find sections of original galvanized steel duct in central Phoenix ranch homes that have separated at the seams after decades of thermal expansion in 110°F+ summers, or flexible duct in 1990s Glendale and Peoria tract homes that has collapsed or torn where it passes through unconditioned attic spaces that regularly hit 140°F. A typical duct repair in Phoenix runs $200 – $650 depending on accessibility and material.
Metal Ductwork Separation
Original metal ducts in older Phoenix neighborhoods like Encanto or Coronado were joined with sealant that hardens and cracks under repeated heat cycling. We re-seam with mastic and mechanical fasteners rated for desert temperature swings, not the tape that will cook off in August.
Flexible Duct Collapse and Punctures
Flex duct in newer Phoenix homes often sags in attic heat or gets pierced by roofing nails, rodents, or tradespeople working overhead. We replace damaged runs with properly supported new flex, sized to the original HVAC design, and seal all connections with code-compliant mastic.
Air Duct Sealing in Phoenix
Air Duct Sealing in Phoenix addresses the gaps, cracks, and disconnected joints that let conditioned air escape into your attic, crawl space, or walls before it ever cools your living space. In a market where air conditioning runs eight months straight, even a 15% duct leakage rate can add hundreds to annual cooling costs. Our crews use mastic sealant, metal-backed tape where appropriate, and aerosol-based duct sealing for hard-to-reach systems. A typical whole-home air duct sealing job in Phoenix runs $450 – $1,200, with larger homes or systems requiring attic access toward the higher end.
Aerosol Duct Sealing for Tight Spaces
Some Phoenix homes built in the 2000s have ductwork buried in insulated ceiling cavities with no practical access. We pressurize the system and inject sealant particles that automatically bond to leak edges, sealing from the inside without cutting drywall. It’s the same method commercial buildings use, adapted for residential scale.
Mastic and Mechanical Sealing
Where we can reach the ducts directly, we brush on water-based duct sealing mastic that remains flexible after curing, then reinforce with mechanical fasteners. This outlasts foil tape, which degrades under Phoenix UV exposure in attic spaces within a few seasons.
Trusted Brands We Service in Phoenix
Our equipment roster includes Rotobrush rotary brush systems and Nikro negative-air machines for cleaning paired with sealing work, plus filtration and sealing products from Aprilaire, Abatement Technologies, and Guardsman. We stock common duct fittings, mastic compounds, and flex duct sizes at our Phoenix metro office, so most repairs don’t wait on parts. When a monsoon dust wall has just blown through and your system is struggling, that local inventory matters. We also handle Air Duct Cleaning in Phoenix and Dryer Vent Cleaning in Phoenix using the same professional-grade tools and the same written-price-first standard.
Common Duct Sealing Problems We See in Phoenix Homes
- Monsoon dust infiltration through return leaks. After a haboob rolls through, fine silt finds every gap in your return ductwork. We seal returns tightly so your filter, not your duct leaks, catches the dust.
- Thermal expansion cracking mastic in original metal ducts. Mid-century ranch homes from Maryvale to Biltmore have ducts that have expanded and contracted through sixty-plus Phoenix summers. The original sealant turns to powder; we replace it with modern flexible mastic.
- Flexible duct degradation in 140°F attics. Phoenix attics are among the hottest in the country. Flex duct insulation compresses, the inner liner tears, and connections loosen. We replace with properly supported runs and seal all junctions.
- Newer “tight” homes with hidden leakage in wall chases. Energy-efficient Phoenix construction from the last fifteen years often routes ducts through insulated wall cavities. Leaks here are invisible but costly; we pressure-test and seal with aerosol methods when access is limited.
Pricing for Duct Sealing in Phoenix, AZ
Whole-home duct sealing in Phoenix typically runs $450 – $1,200. Single duct repairs run $200 – $650. What moves you within those ranges: the size of your system (a 5-ton unit serving a 3,500-square-foot Ahwatukee home has more linear feet of duct than a 2-ton system in a Sunnyslope ranch), attic accessibility, whether we need aerosol equipment for sealed cavities, and whether we’re sealing after cleaning or accessing already-dirty ductwork. We give one flat price per system, agreed in writing before any work starts. No per-vent pricing, no add-ons at the door, no “we found another problem” surprises. Every job includes before-and-after photos of your own ducts so you see what was done. Estimates are free; call (361) 326-5060 to schedule.
We Also Serve Cities Near Phoenix
Our Duct Sealing in Phoenix crews also handle jobs in Scottsdale, Tempe, Mesa, Glendale, Peoria, Chandler, and Gilbert. Scheduling and dispatch are coordinated from our Phoenix metro office, so response times stay tight across the Valley.
Serving Phoenix, AZ - Our Local Coverage Area
We’re based in the Phoenix 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 Phoenix
We typically schedule duct sealing within 3 – 5 business days, and urgent cases (complete system failure, post-monsoon contamination) often sooner. Our Phoenix metro office dispatches crews across the Valley, so Sunnyslope, Arcadia, and Ahwatukee are all inside our standard service radius. Call (361) 326-5060 for next available.
Yes. We seal ducts from central Phoenix historic districts to new builds in the far reaches of the city. Our crews know the housing stock: original metal ductwork in 1950s ranches near Encanto, flex systems in 1980s subdivisions near Paradise Valley Village, and tight-seal new construction throughout the metro.
We don’t promise same-day dispatch, but our phones are answered by a live person 24/7, and we prioritize calls where the system is down or indoor air quality is compromised after dust events. If it’s urgent, we’ll get you the next available slot and give you a straight timeline.
Phoenix pricing sits roughly in line with Mesa and Glendale, slightly below Scottsdale on average due to accessibility differences in older housing stock. The bigger cost driver than city is home age and attic access. We give the same written-price standard everywhere we work.
Every Hollis duct sealing job carries our 365-Day Done Right Promise in writing. If the seal fails, the repair fails, or workmanship is defective within one year, we return and make it right at no charge, including a free second visit. No negotiation, no runaround. The guarantee is backed by the Garrison Partners family, not a third-party administrator.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Phoenix and the Valley of the Sun.