Duct Sealing in Henderson - We Measure the Leak Before We Quote

Trusted Duct Sealing for Henderson Homeowners

Our Duct Sealing in Henderson typically costs between $450 and $1,200 for a standard single-family home, depending on how many leaks we find and where they sit. We’ve been doing this work since 2004 under the Garrison Partners family, and our crews run on The Garrison Standard: a written price before we touch anything, uniformed and background-checked technicians, and a 365-Day Done Right Promise in writing on every job. If your upstairs rooms never quite cool down in July or your utility bill climbs every summer, leaking ductwork is usually the culprit. Call (775) 383-5847 and we’ll tell you exactly what we’d do and what it costs.

Call (775) 383-5847

Key Takeaways

• Written price before work starts. The number on your quote is the number you pay. No add-ons at the door.
• 365-Day Done Right Promise. If the sealing fails within a year, we return and fix it at no charge, including a free second visit.
• Typical cost: $450 to $1,200 for most Henderson homes. Whole-home re-sealing with insulation runs higher.
• We answer the phone 24/7. A live person, not a voicemail tree, even at 2 a.m.
• Professional-grade equipment from Rotobrush, Nikro, and filtration brands like Honeywell and Aprilaire.

Most Henderson homeowners don’t think about their ducts until a room won’t cool. But the valley’s heat makes leaks expensive fast. When conditioned air escapes into the attic before it reaches your vents, your AC runs longer to hit the same temperature. Sealing closes those gaps at the joints, connections, and plenum, so the air you pay to cool actually lands where you want it.

We’re part of the home services family at Garrison Partners, and we’ve been sealing ducts in this valley long enough to know what Henderson attics throw at us: 140-degree summer heat, blown-in insulation, and ductwork that was often undersized from the day it was installed. Our job is to make it right, in writing, for a full year.

Duct Insulation

Duct Insulation is the layer of thermal wrap or liner that keeps the cool air inside your ducts cool and the hot attic air from warming it up before it reaches your registers. When insulation is thin, missing, or torn, your AC works harder and rooms at the end of the longest runs still feel warm. We inspect insulation condition on every sealing job and replace or upgrade it where needed, using the same materials commercial crews spec, not hardware-store rolls. Most Henderson homes we see need insulation work in the attic sections, where heat gain is worst.

Cost for insulation work typically adds $250 to $600 to a sealing job, depending on how many feet of duct need re-wrapping. We write that price down before we start, and it does not move.

What Insulation Does for Henderson Summers

In a Green Valley attic in August, the space around your ducts can hit 140 degrees. Insulation is the only thing between that heat and the 55-degree air moving inside the ducts. When insulation is compromised, the air warms up by the time it reaches the far bedroom, and your thermostat never knows the difference.

When Replacement Is the Only Fix

Pests chew through duct wrap. Old insulation crumbles or sags. If we find torn or compressed insulation during a sealing call, we’ll show you photos and give you a written price to replace it. We never charge for insulation work we didn’t agree to in advance.

HVAC Duct Sealing

HVAC Duct Sealing closes the gaps, seams, and connection points in your forced-air system so the air your furnace or AC produces actually reaches your rooms. In Henderson, we seal with mastic and foil tape rated for high-heat attic conditions, applied by hand at every accessible joint. The result is more even room temperatures and less strain on your equipment. A typical whole-system sealing in Henderson runs $450 to $900, and the work usually takes one day.

Why Mastic, Not Just Tape

Hardware store duct tape dries out and peels in attic heat. We use water-based mastic, a paste that hardens into a permanent, flexible seal. It’s the same material commercial HVAC crews use because it holds up under the temperature swings your attic sees every day.

Where Leaks Actually Happen

Most leaks are at the plenum connections, branch takeoffs, and register boots, not in the middle of straight runs. Our technicians check every one of those points with a pressure test or smoke pencil before and after sealing. You get before-and-after photos so you can see the work was done, not just promised.

Duct Repair

Duct Repair fixes sections of ductwork that are crushed, disconnected, rusted, or damaged beyond what sealing alone can solve. In Henderson, we commonly see flex ducts that have been pinched by careless attic work, separated at the collar from settlement, or chewed through by rodents. When that happens, sealing won’t hold; the section needs to be repaired or replaced first. Repairs typically run $150 to $400 per affected section, depending on access and the length of the run.

Collapsed or Pinched Runs

A crushed flex duct restricts airflow like a kinked garden hose. The room at the end of that run gets weak airflow no matter how long the AC runs. We identify the restriction, repair or replace the section, and verify airflow at the register before we call the job done.

Disconnected Joints and Separations

Ducts separate at connection points more often than most homeowners realize, especially in older Henderson homes where the original install was hustled. A disconnected run dumps conditioned air into the attic and pulls dusty attic air into the system. We reattach, seal, and test every repaired joint.

Air Duct Sealing

Air Duct Sealing is the whole-system fix: finding every leak, closing it, and verifying the result with a pressure test. We use a negative-air machine from Nikro to measure how much air your system is losing, then seal until the leakage rate drops to an acceptable standard. Homeowners in Anthem and Seven Hills, as well as those who choose Duct Sealing - North Las Vegas, with two-story layouts tend to notice the biggest difference in upstairs comfort. Whole-system air duct sealing costs $600 to $1,200 in most Henderson homes, depending on system size and attic access.

Before and After Pressure Testing

The test is what separates sealing from guessing. We pressurize or depressurize your ducts and measure the leak rate in cubic feet per minute. After sealing, we test again and show you the numbers. If the improvement doesn’t meet our standard, we keep working until it does.

Comfort and Dust Are Connected

Leaks on the return side pull attic air into your system, which means dust, insulation fibers, and whatever else is up there gets circulated through your home. Sealing the return side is a meaningful air quality improvement, not just an efficiency gain. It’s one of the first things we check in homes around Whitney and Sunrise Manor, and the same applies to Duct Sealing in Nellis AFB, where older construction is common.

Duct Sealing Services

Duct Sealing Services cover everything we do to stop conditioned air from escaping your system: inspection, leak testing, sealing at all accessible joints, insulation repair, and a final verification pass. Hollis Air Duct Henderson offers this as a stand-alone service or as part of a broader Duct Sealing in Henderson package that includes cleaning when needed. A full service call with testing and sealing starts at $450 and most complete jobs land between $600 and $1,000.

Sealing Alone or Sealing With Cleaning

If your ducts are clogged with dust or debris, sealing without cleaning locks the mess in place. We’ll tell you honestly whether cleaning should come first. If the ducts are clean, we won’t upsell you. The price stays whatever we wrote down before work began.

What the 365-Day Promise Covers

Every sealing job is covered in writing for a full year. If a sealed joint fails, we come back at no charge. That includes a free second visit. You don’t negotiate for it; it’s just how the Garrison Standard works.

Brands We Service

Our sealing and testing equipment includes Rotobrush rotary brush systems and Nikro negative-air machines, the same tools commercial duct crews use on office buildings and medical facilities. We use them on Henderson homes because they produce measurable results, not because the name looks good on a truck. If your system was sealed or tested by another company, we can verify the work with our own equipment and give you a second opinion in writing.

For filtration and air quality, we work with Honeywell and Aprilaire products, including media filters and air cleaners that integrate with sealed ductwork. Whether your home has Honeywell, Aprilaire, or any other make, we can service it and explain what’s actually needed, not what pads a ticket.

Signs You Need a Pro Right Now

• Rooms that never reach the thermostat setting. If one bedroom stays five degrees warmer than the rest of the house, the air is probably leaving the duct before it gets there. Sealing the branch run to that room usually fixes it.
• Dust accumulating fast on surfaces. Return-side leaks pull attic air and insulation fibers into your system. If you dust on Sunday and it’s back by Thursday, the ducts are the likely carrier.
• Higher summer bills without a change in usage. Leaking ducts make your AC work longer to hit the same temperature. A 30 percent duct leak can add hundreds to your NV Energy bill over a Henderson summer.
• Weak airflow from every register. A big leak near the air handler can starve your whole system. Sealing the plenum and main trunk restores air delivery to every room at once.
• You hear whistling or rattling behind the walls. Air escaping through a small gap under pressure makes a high-pitched sound. If you hear it, the leak is active and getting worse as the metal expands and contracts.

None of these are normal. Some are slow drains on your wallet; others actively pull attic dust into your air. A visual inspection and pressure test will tell us exactly which problem you have and what it costs to fix.

Our Process, Step by Step

Our process runs on The Garrison Code: arrive inside the window, price in writing, work by the book, leave the site clean. Here’s how a sealing job goes in Henderson.

1. 1
   You call and talk to a person. A live voice answers at (775) 383-5847, any hour. We ask about your home’s layout, symptoms, and schedule, then set a window we intend to hit.
2. 2
   We inspect and test. The technician walks the attic, basement, or crawlspace, checks every accessible joint, and runs a pressure test with a Nikro negative-air machine to measure actual leakage in CFM. You see the starting number.
3. 3
   You get a written price. Before any work starts, you receive a line-item quote for the sealing work, any insulation repair, and any recommended cleaning. The price is the price. Nothing moves at the door.
4. 4
   We seal and verify. We apply mastic and foil tape at every accessible joint, repair or replace damaged sections, and pressure test again. We show you the new leakage number and before-and-after photos of the work.
5. 5
   We leave it clean and documented. The work area is swept, tools are packed, and you get a written summary of what was sealed, what was tested, and how long you’re covered under the 365-Day Done Right Promise.

Duct sealing is a loud, detailed job, and the difference between a good one and a bad one is invisible to most homeowners. We make it visible with numbers and photos, not reassurances.

How Much Does Duct Sealing Cost in Henderson?

Our Service Area Near Henderson

We seal ducts throughout the Henderson valley and the surrounding communities: Duct Sealing in Paradise, Green Valley, Anthem, Seven Hills, Whitney, and as far north as Sunrise Manor and Winchester. We also run jobs in Duct Sealing in Boulder City and the neighborhoods around Nellis AFB. Most Henderson calls get service scheduled within a few business days, and we arrive inside the quoted window. If you’re in Enterprise or Southern Highlands, give us a call and we’ll confirm coverage for your address.

Frequently Asked Questions About Duct Sealing in Henderson

Schedule Your Duct Sealing Service in Henderson Today

Call (775) 383-5847 and you’ll reach a live person, not a call center queue. We’ll schedule a visit, inspect your ductwork, and hand you a written price before any work begins. Every job is covered by the 365-Day Done Right Promise. You know what it costs, you know what we’ll do, and you know we stand behind it for a year.

Written by Roy Castellanos, Owner at Hollis Air Duct Henderson, serving Henderson since 2004.