Whole-home duct cleaning
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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.
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AfterHow Much Does Duct Repair & Sealing Cost in Henderson?
Duct repair and sealing in Henderson typically runs $450 to $1,600, with most homeowners paying around $980 depending on how much of the system needs attention. A simple visual inspection plus spot-sealing of accessible joints might come in under $400, while a full-system sealing job with mastic and repair of crushed or disconnected runs in a larger home can push past $2,000. These are real ranges from the Henderson market in 2026, not national averages that ignore how our homes are actually built here.
Hollis Air Duct Henderson gives you a written price before any work starts, so the number you approve is the number you pay. Call (775) 383-5847 for a free estimate and we’ll give you an exact figure for your system.
Key Takeaways
- Typical Henderson duct repair and sealing cost: $450 to $1,600
- Spot sealing of accessible joints: $180 to $400
- Full-system sealing with mastic: $800 to $1,600
- Duct replacement sections (if repairs aren’t enough): $35 to $55 per linear foot
- Most jobs are completed same-day, and every job carries the 365-Day Done Right Promise
Duct Repair & Sealing Cost Breakdown (2026)
Here’s what we’re seeing across the Henderson market right now. These are the line-item ranges we quote from, and they hold whether you’re in Green Valley Ranch, Anthem, Inspirada, or over near Lake Las Vegas.
| Service | Typical Henderson Price Range | What It Includes |
|---|---|---|
| Duct inspection with camera or visual access | $99 to $250 | Access-panel inspection, leak identification, written findings |
| Spot sealing of accessible joints and seams | $180 to $400 | Mastic or foil tape on 3-8 accessible joints |
| Sealing an individual duct run | $150 to $350 per run | One supply or return run, including connections at plenum and register |
| Full-system duct sealing with mastic | $800 to $1,600 | All accessible supply and return runs, plenum connections, register boxes |
| Repairing a crushed or disconnected duct section | $200 to $500 per section | Reconnecting or replacing a 5-10 foot section of flex or rigid duct |
| Replacing damaged ductwork section | $35 to $55 per linear foot | Removal of damaged duct, new duct, sealed connections |
| Plenum repair or replacement | $300 to $700 | Repairing or rebuilding the main supply or return plenum box |
| Aeroseal-style aerosol sealing (if needed) | $1,500 to $2,500 | Whole-system aerosol sealing from inside the ducts |
Those numbers aren’t guesses. They’re what we quote in Henderson every week. The biggest variable is accessibility: if your furnace is in a closet on a second floor in an Anthem home, we’re working in tighter quarters than if you have a ground-level utility room in a 1990s tract house near Basic High School. That affects time, and time affects price. We write the price down before we start, so neither of us gets surprised.
What Drives the Price Up
- Duct count and home size: A 3,500-square-foot two-story home in Seven Hills has more linear feet of duct than a 1,600-square-foot single-story in Whitney Ranch. More ducts, more joints, more sealing.
- Access difficulty: Henderson homes built on slabs often route ducts through the attic. If yours is buried under blown-in insulation in a low-pitch attic, that’s slower work than a basement-accessible system.
- Age of the system: Ducts installed during the 2000s Henderson building boom are hitting the 20-year mark. We see a lot of duct tape failures and disconnected flex runs in homes built between 2003 and 2008.
- Prior repairs: If someone previously used hardware-store duct tape instead of proper mastic or UL-listed foil tape, we’re removing failing tape before we can seal correctly.
- Mold or pest damage: If a leaking duct has pulled in attic dust, or rodents have chewed through flex duct, the repair scope changes from sealing to replacement.
If you want to see where you fall in these ranges before committing to anything, call (775) 383-5847. The estimate is free and the price is written down before anyone touches your system.
What Affects Duct Repair & Sealing Pricing in Henderson
Henderson isn’t Las Vegas, and it isn’t Phoenix. Our construction patterns, climate, and housing stock all shape what duct work costs here. Here are the factors that actually move the number.
- Slab foundation with attic ducting: The vast majority of Henderson homes are built on slabs, which means ducts run through the attic. In July, that attic can hit 140 degrees. Duct sealing work happens in that heat, and the temperature cycling expands and contracts duct joints daily. This is why Henderson homes show more joint separation than homes in cooler climates. It’s also why we schedule attic work in the early morning when possible.
- The 2003-2008 construction wave: Henderson added tens of thousands of homes during that stretch. Houses built then are now 18-23 years old, which is exactly when improperly sealed duct joints start showing measurable leakage. If you bought a home originally built in Green Valley Ranch or MacDonald Ranch during that period, you’re in the prime window for duct repair.
- Evaporative cooler conversions: Many older Henderson homes started with swamp coolers and were later converted to central air. Those retrofits often left mismatched duct sizes and poorly sealed transition points. We see this constantly in the older neighborhoods around downtown Henderson and along Boulder Highway.
- Two-story homes with stacked ducts: In areas like Anthem, MacDonald Highlands, and Seven Hills, two-story construction puts return ducts in chases between floors. Accessing those chases for repair is more involved than attic-only work, and the labor reflects that.
- HOA and exterior access rules: Some Henderson HOAs have rules about equipment or work in common areas. It rarely affects interior duct access, but if we need to reach a roof-mounted package unit, we coordinate access properly.
- Local energy costs: NV Energy rates keep climbing. A duct system leaking 20% of your conditioned air in a Henderson summer isn’t a comfort problem; it’s a monthly bill problem. Sealing ducts often pays for itself in a single cooling season, and that math is specific to our climate and our rates.
Is the Duct Problem Sealing, Repair, or Replacement?
Not every problem gets fixed the same way, and the price difference between sealing a joint and replacing a duct run is significant. Here’s how to know which one you’re dealing with.
Sealing: Joints Are Leaking
If the ducts are intact but air is escaping at the seams, sealing is the answer. We use duct sealing mastic, which is a thick, brush-on compound that dries hard and permanent. Mastic is the trade standard because it doesn’t dry out and peel the way tape eventually does. When we seal a joint, we brush the mastic over the connection until it’s airtight. This is the work that falls in the $450 to $1,600 range for a full system.
Repair: A Section Is Damaged
Duct repair means a specific piece is broken: a crushed flex run, a disconnected elbow, a torn section, or a register box that pulled away from the drywall. In Henderson attics, the heat degrades flex duct over time; the outer jacket gets brittle and the inner liner tears. Repair means cutting out the damaged section and reconnecting properly. Repairs are quoted per section and typically run $200 to $500 per incident.
Replacement: The Duct Has Failed
Sometimes the duct has simply reached the end of its service life. If the inner liner has separated, if rodents have chewed through enough of it, or if a previous homeowner used the wrong materials, replacing the run is the honest fix. That’s the $35 to $55 per linear foot number. We replace with R-6 or R-8 rated flex duct, never with whatever is cheapest at the supply house.
What Happens During a Duct Sealing Job in Henderson
Here’s the sequence, start to finish, so you know exactly what you’re paying for.
- Inspection and leak finding: We access the attic and trace the trunk line and branch runs. We’re looking for disconnected joints, failed tape, crushed sections, and gaps at the plenum. We also check the return side, which is often the biggest source of leakage in Henderson homes.
- Written quote: Before any work starts, you get a written price that covers exactly what we found and what we’ll do. The number doesn’t change once we start unless you approve additional work in writing first.
- Cleaning the surface: Mastic doesn’t bond to dust. We wipe down the joints we’re sealing so the mastic has a clean surface to grab. Skipping this step is why cheap sealing jobs fail within a year.
- Applying mastic: We brush mastic over every accessible joint, seam, and connection on the supply and return side. We also seal the register boxes to the drywall where accessible.
- Repairing damaged sections: If we found crushed or disconnected sections during inspection, we repair or replace those as part of the scope you approved.
- Static pressure check: After sealing, we check static pressure to make sure the system is moving the right amount of air. A sealed duct system changes airflow, and verifying the numbers means we’re not creating a new problem.
- Site cleanup: We leave your home the way we found it: no mastic smears on the ceiling, no debris in the attic, no flex duct scraps in the driveway. That’s part of The Garrison Code, and it’s not optional.
Every step above is covered by the 365-Day Done Right Promise. If a sealed joint fails or a repair separates within a year, we come back and make it right at no charge. That includes a free second visit, not a negotiated callback. It’s written on every invoice.
Henderson Energy Reality: Why Sealing Pays for Itself
Here’s some math that’s specific to Henderson. NV Energy’s summer rates are among the highest in the Intermountain West, and our cooling season runs from May through late September, often with overnight lows that never drop below 80 degrees in July. If your duct system is leaking 20% of the air your AC produces, that’s 20% of your cooling budget going into the attic.
A $1,200 full-system sealing job on a 2,200-square-foot home in Henderson typically reduces leakage by 15-25%. At current NV Energy rates, that’s roughly $200 to $350 a year in cooling savings for most homes, plus the comfort difference in rooms that were always too hot. The sealing pays for itself in three to five cooling seasons, and it slows wear on your AC equipment because the system isn’t running as long to hit the thermostat setting.
That’s not sales talk. It’s the same math we walk through with every customer considering a sealing job. If the leak test shows you’re losing only 5-8%, we’ll tell you the seal might not be worth it yet. We’d rather give you an honest answer than sell work you don’t need.
How to Save on Duct Repair & Sealing in Henderson
Some of these are about timing. Some are about not paying for work you don’t need. All of them are things we tell our neighbors in Henderson.
- Get a leak inspection before you commit: Not every home needs full-system sealing. A $99 to $250 inspection tells you exactly where you’re leaking and what actually needs attention. If you only have three leaking joints, you don’t need a $1,600 whole-system job.
- Combine sealing with air duct cleaning: If you’re already planning a home air duct cleaning, adding sealing during the same visit is more efficient than scheduling two separate attic trips. The equipment is already set up, and the ducts are clean and ready for mastic to bond properly.
- Schedule in the shoulder season: March, April, October, and November are busy but less chaotic than June and July. Emergency calls in July and August always cost more because of urgency and heat. If your system is leaking and you can wait a few weeks, you’ll have more scheduling flexibility and often a better day-rate.
- Address dryer vents in the same visit: While we’re in your attic, a dryer vent cleaning is quick and prevents a separate service call later. It doesn’t reduce the duct sealing cost directly, but it consolidates the work.
- Ask about the full repair scope before approving: The biggest savings comes from knowing what’s actually broken. A disconnected return duct in the attic is a $300 repair. A whole-system seal is $1,200. We show you what we found and give you a written quote for exactly what’s needed. No upsell ladder.
The best way to know what your system actually needs is a free estimate. Call (775) 383-5847 and we’ll schedule a time that works for you. We show up inside the quoted window, inspect what we can access, and put the price in writing before any work begins.
FAQs – Duct Repair & Sealing Cost
How much does duct repair cost in Henderson?
Duct repair in Henderson typically costs $200 to $500 per damaged section, whether that’s reconnecting a separated joint, repairing a crushed flex run, or patching a torn duct. Full-system sealing runs $800 to $1,600 for most homes. The exact number depends on what we find in your attic, and you’ll have a written price before any work starts. Call (775) 383-5847 for a free estimate.
Is it cheaper to repair or replace ductwork?
Repair is almost always cheaper in the short run: a $300 to $500 repair versus $35 to $55 per linear foot for replacement, which means $1,000 to $2,500 for a typical Henderson home’s main sections. But if your ducts are 20-plus years old, brittle, and failing in multiple places, replacement is often the better long-term money. We’ll show you what we found and let you decide with a written price on each option.
How much does duct sealing cost in Henderson?
Duct sealing in Henderson runs $450 to $1,600 for a full system, with spot-sealing of a few accessible joints starting around $180 to $400. Aerosol sealing for hard-to-reach systems runs $1,500 to $2,500. Most Henderson homes respond well to mastic sealing, and every job carries our 365-Day Done Right Promise. Call (775) 383-5847 for an exact quote.
Can you come today for duct repair?
In many cases, yes. We keep same-day and next-day slots open for Henderson duct repair calls, and our phones are answered by a live person 24/7, so you’ll know within minutes whether we can get to you today. Emergency calls in peak summer are the exception, but we’ll give you a straight answer on timing. Call (775) 383-5847 and we’ll tell you what’s available.
Does duct sealing actually save money on energy bills?
In Henderson, a full-system seal typically cuts duct leakage by 15-25%, which translates to roughly $200 to $350 per year in cooling savings at current NV Energy rates. The payback period for most homes is three to five years, and that’s before you factor in the comfort of rooms that finally reach the right temperature. If your leak test shows minimal leakage, we’ll tell you sealing isn’t worth it yet.
Why Henderson Homeowners Call Hollis Air Duct Henderson
Our team is led by Roy Castellanos, and every job runs on The Garrison Code: arrive inside the quoted window, price the work in writing before anything starts, do the job by the book, and leave the site clean. No moving prices at the door. No uniforms that show up without a name. No callbacks that require you to chase us.
We’ve been part of the Garrison Partners family since 2004, and the 365-Day Done Right Promise means if a repair fails within a year, we return and make it right at no charge. That includes a free second visit, not a negotiated callback. Our technicians are background-checked and uniformed, and we use professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies with filtration products from Honeywell, Aprilaire, and Guardsman. The same tools commercial crews run.
For Duct Repair & Sealing in Henderson, we give you a written price and stand behind the work for a full year. If your system is leaking, struggling to cool certain rooms, or showing high energy bills, call (775) 383-5847 for a free estimate. We’ll tell you what’s actually wrong, what it costs to fix, and what you can defer. In writing. Before any work starts.
Pricing reflects the Henderson market as of 2026. Written by Roy Castellanos and the Hollis Air Duct Henderson team. Hollis Air Duct Henderson offers free estimates – call (775) 383-5847.
What Our Customers Say
"Careful with the carpet and furniture. Even wiped down the vent covers before putting them back."
- Leo B."Crew arrived in uniform at the exact time promised. Covered the floors, cleaned all the supply and return vents, and brushed out the main trunk. Vet-owned, and it shows in the discipline."
- Duane S."Pet hair all through the returns. The crew pulled out a whole bag of it. Smell is gone."
- Ana G.