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.
Before
After
Before
After
Before
AfterHow Much Does Duct Repair & Sealing Cost in Fort Worth?
Our Duct Repair & Sealing services in Fort Worth, TX typically cost between $350 and $1,200 for a standard single-story home, with most jobs landing around $500 to $750 when the damage is limited to a few runs and one or two access points. Homes with attic-mounted ductwork – common in the older Fairmount, Mistletoe Heights, and Berkeley Place neighborhoods – often run toward the higher end because technicians are working in tight, unconditioned spaces where summer temperatures can exceed 130°F. Full duct sealing on a two-story home with a zoned system can reach $1,400 to $2,200, especially when mastic application and foil-tape reinforcement are required at every joint.
Duct Repair & Sealing Cost Breakdown (2026)
The table below reflects actual price ranges CleanRun sees in the Fort Worth market in 2026. Every number is based on written quotes – not estimates pulled from national databases that have never seen a Texas attic in July.
| Service / Scope | Typical Price Range (Fort Worth) | Notes |
|---|---|---|
| Single duct run repair (minor tear or disconnect) | $150 – $300 | One accessible run, flex duct or sheet metal |
| Duct sealing – small home (under 1,500 sq ft) | $350 – $550 | Mastic and/or foil tape at joints and elbows |
| Duct sealing – medium home (1,500 – 2,500 sq ft) | $500 – $850 | Most common scope in the Fort Worth market |
| Duct sealing – large home (2,500 – 4,000+ sq ft) | $900 – $1,600 | Multi-zone, multiple air handlers |
| Plenum repair or replacement | $400 – $900 | Plenum = central distribution box connecting air handler to duct runs |
| Flex duct replacement (per run) | $250 – $600 | Price varies by run length; attic access adds cost |
| Aeroseal duct sealing (whole-system pressurized sealant) | $1,200 – $2,400 | Injected polymer seals leaks from inside; no access panels needed |
| Duct repair + full cleaning (combined scope) | $650 – $1,800 | Common after repair to remove debris dislodged during work |
| Emergency / same-day duct repair | Add $100 – $250 | Applies when scheduling within 24 hours during peak season |
A few things push jobs outside these ranges. Homes in the Ridglea Hills area and parts of southwest Fort Worth that were built in the 1960s and 1970s sometimes still have original galvanized sheet-metal ductwork. Repairing that correctly means cutting out deteriorated sections, fabricating replacement pieces, and sealing every new joint – a scope that routinely runs $1,500 to $2,800 for a full system. On the other end, a newer construction home in Waterside or Walsh Ranch with quality flex duct installed five years ago might need nothing more than a few joints re-taped and re-clamped for under $300.
Written price before any work starts is not optional at CleanRun – it is Haven Standard Clause 1. You will see the number on paper before a single panel comes off the wall.
What Affects Duct Repair & Sealing Pricing in Fort Worth
- Duct material and age. Flex duct – the corrugated silver tubing used in the vast majority of Fort Worth homes built after 1985 – is relatively inexpensive to repair and seal. Sheet-metal ductwork, common in pre-1980 homes in the Fairmount and Polytechnic Heights neighborhoods, costs more to work on because joints require custom fabrication rather than clamping. Older ductwork also tends to have more leak points, so the scope grows once a technician is inside.
- Access and location. Ductwork in an unconditioned attic – the norm for most Fort Worth slab-on-grade construction – costs more to service than ductwork in a conditioned crawl space or a utility room. Attic jobs in summer mean technicians working in extreme heat, which limits work windows and increases job time. Ductwork buried under blown-in insulation adds another layer of labor before the actual repair even starts.
- Number and severity of leaks. A single disconnected elbow at a register boot is a straightforward fix. A system where every flex duct connection has been leaking for a decade – a pattern we see regularly in homes along the older corridors of the Meadowbrook and Polytechnic areas – requires mastic application at every joint across the entire system. Camera inspection before quoting is the only way to know which situation you have; guessing produces inaccurate quotes.
- System size and zoning. A 1,200-square-foot townhome in the Near Southside has one air handler and maybe eight duct runs. A 3,800-square-foot home in Westover Hills may have two air handlers, separate return plenums, and eighteen or more runs. Labor scales directly with system size, and two-zone systems almost always reveal sealing failures at the zone-damper connections.
- Sealing method chosen. Mastic sealant – a gray paste applied by brush at every joint and elbow – is the most common method and the most durable for manual application. Foil tape (not duct tape, which fails in heat) is used alongside mastic on exterior seams. Aeroseal is a pressurized injection process where a polymer particle is blown through the duct system from the inside, sealing leaks that no technician’s hand could reach. Aeroseal costs more upfront but can reduce system leakage by 90 percent or more and is often the right call when duct runs are not easily accessible.
- Fort Worth’s climate load on ductwork. North Texas heat cycles are among the most punishing in the country. Attic temperatures in Fort Worth regularly hit 130 to 140°F from June through September, which causes flex duct to expand and contract repeatedly. Over ten to fifteen years, that thermal cycling separates joints at elbows and boots – particularly in homes where the original installer did not use enough clamps or applied duct tape instead of mastic. We see this failure pattern most often in homes built between 1988 and 2002 across the Saginaw, Haltom City, and Richland Hills corridors north of the city.
BeforeAfterSigns You Need Duct Repair or Sealing in Fort Worth
Not every duct problem shows up on your energy bill right away. Some of the clearest indicators are physical. If you walk into a bedroom in your Aledo or North Fort Worth home on an August afternoon and it is noticeably warmer than the rest of the house despite the same thermostat setting, a disconnected or leaking duct run serving that room is one of the most likely causes. The room is getting less conditioned air because some of it is dumping into the attic instead of the register.
Other signs worth investigating:
- Rooms that are consistently 4°F or more warmer or cooler than the thermostat set point
- A dusty film that reappears on registers within days of cleaning – this can indicate a breach near a dusty attic space
- An HVAC system that runs for unusually long cycles without reaching the set temperature
- A sharp, unexplained increase in your Oncor or ATMOS utility bill with no change in usage habits
- Visible crinkles, sags, or separations in flex duct when you look into the attic
- A musty or attic-like smell coming from registers, which can indicate a breach near an unconditioned space
A camera inspection through the duct system is the only way to document what is actually happening. At CleanRun, every diagnostic visit produces a photo record of the inside of each run – what was found, where it was found, and what the condition looked like before any work began. That record belongs to you as part of the standard job deliverable, not as an upsell.
Duct Sealing vs. Duct Repair: What Is the Difference?
Duct repair means fixing a structural failure: a disconnected flex duct connection, a crushed elbow, a rusted-through section of sheet metal, or a plenum that has separated from the air handler. The duct is not doing its job because something broke or came apart.
Duct sealing addresses leakage at joints and seams that are still physically connected but are not airtight. Most flex duct joints, over time, develop small gaps where conditioned air escapes into the attic before reaching the register. The duct is still attached – it is just hemorrhaging air at every connection point. Sealing those joints with mastic or Aeroseal stops the loss.
In practice, most jobs in Fort Worth involve both. The camera finds a disconnected boot in one room and seventeen unsealed joints throughout the rest of the system. Quoting them together is more accurate and usually less expensive than two separate visits. Our Duct Repair & Sealing in Fort Worth page covers the full scope of what each service involves if you want the deeper technical breakdown before calling.
How to Save on Duct Repair & Sealing in Fort Worth
Get a camera inspection before accepting any quote. A company that quotes duct sealing without putting a camera inside is guessing at scope. If the scope is wrong, the price is wrong – usually in the upward direction after work has already started. An accurate inspection takes 45 to 60 minutes on a typical Fort Worth home and produces a written scope tied to documented findings. That is the only kind of quote worth comparing.
Combine duct repair with duct cleaning when both are needed. If duct runs need to be opened for repair, debris from the attic often enters the system during that process. Cleaning after repair is not optional if you want air quality maintained – and scheduling both services in a single visit saves a second trip charge, which in Fort Worth typically runs $75 to $150.
Ask specifically about Aeroseal for hard-to-access systems. If your ductwork is buried under 12 inches of blown insulation – common in homes across the Lake Worth and Summerfields areas – the labor cost to hand-seal every joint may actually exceed what Aeroseal costs for the same result. It is worth getting both numbers in writing before choosing a method.
Use the free second opinion. If you have a written estimate from another company, CleanRun will put its own number next to it in writing at no cost. No phone games, no “call for a quote” back-and-forth. Bring the paper; we put a number next to it. This is particularly useful when a quote feels high but you are not sure whether the scope justifies it – seeing two written scopes side by side makes the comparison factual rather than intuitive.
Schedule outside peak season. Fort Worth HVAC service companies are busiest from June through September, when duct failures are discovered as cooling bills spike. Scheduling a duct inspection in March, April, October, or November typically means faster scheduling and no peak-season premium. Emergency and same-day surcharges apply most often in the summer months.
Check whether your repair qualifies for a utility rebate. Oncor, which serves most of the Fort Worth metro, periodically offers rebates for verified duct sealing improvements that reduce system energy load. Eligibility depends on the home’s baseline leakage rate, the measured improvement after sealing, and the current program terms – which change annually. A job documented with before-and-after leakage measurements is a prerequisite for any rebate claim. Ask for that documentation when you schedule.
For a written price on your specific home, call (817) 520-8797. CleanRun answers live, and every estimate is free.
What CleanRun Does Differently on Every Duct Repair Job
Tomas Reyes built CleanRun around a simple idea: the customer should be able to see everything we see before deciding to spend any money. That means a camera goes into every duct run before a scope is written, a written price is on the table before any panel comes off, and a photo record of the inside of every run – before and after – is delivered to the customer when the crew leaves. Not as an upsell. Not as a premium add-on. As the standard job record.
Since 2013, CleanRun has served more than 52,000 homes in the Fort Worth area under that model. The 365-Day Done Right Promise is written into every job: if the work is not right, we make it right. That is not a policy subject to manager approval – it is in writing on the job record itself.
Equipment on duct repair jobs includes professional-grade tools from Rotobrush and Nikro for negative-pressure extraction (meaning debris is pulled out under vacuum, not blown around the home) and Abatement Technologies equipment for air quality control during repairs. When sealing is part of the scope, we use mastic sealant and foil tape that meet SMACNA standards – not off-the-shelf duct tape, which fails under Fort Worth attic temperatures within two to three seasons.
Every technician operating under the H.A.V.E.N. Standard is background-checked, uniformed, and identified by name before arrival. Haven Standard Clause 3 – Verified Crews – is not a talking point; it is a documented requirement on every job. If you want to verify our licensing status, it is published on the home page, not buried in a footer.
FAQs – Duct Repair & Sealing Cost in Fort Worth
How much does duct sealing cost for an average Fort Worth home?
For a typical Fort Worth home between 1,500 and 2,500 square feet, duct sealing costs between $500 and $850, including mastic application at all accessible joints and a documented photo record of the work. Homes with older ductwork, limited attic access, or more than one air handler tend to land toward the upper end of that range. Call (817) 520-8797 for a written quote tied to what our camera actually finds in your system – estimates are free.
Is it cheaper to seal ducts or replace them?
Sealing is almost always cheaper than replacement when the duct runs are physically intact. A full duct replacement on a 2,000-square-foot Fort Worth home runs $2,500 to $5,500 depending on material and layout – three to six times the cost of sealing the existing system. Replacement makes more sense when flex duct is crushed, kinked in multiple places, or more than 20 years old with widespread inner liner damage. A camera inspection is the only way to know which situation applies to your home; without one, any recommendation is a guess.
Can ducts be sealed without opening up the walls?
Yes, in most cases. Standard mastic sealing works through existing access points – register openings, the air handler compartment, and the plenum. Aeroseal goes further: it injects a pressurized polymer sealant through the air handler opening, and the particles are carried by airflow to every leak point in the system, sealing from the inside out without any new openings. For Fort Worth homes where ductwork runs through finished ceilings or walls, Aeroseal is often the only practical option and costs $1,200 to $2,400 for a whole-system treatment.
How long does duct sealing last in Fort Worth’s climate?
Mastic sealant applied correctly at every joint lasts 15 to 20 years under normal conditions. Foil tape used alongside mastic at exterior seams typically holds for a similar period. Plain duct tape – not the same product despite the name – fails within two to five years under Fort Worth attic temperatures and should not be used in any permanent repair. Aeroseal manufacturer documentation cites an expected service life of more than 10 years for the injected polymer. Homes that had the original installation done with duct tape instead of mastic often see joint failures within 8 to 12 years of construction, which is why so many Fort Worth homes built between 1990 and 2005 need sealing work now.
Does CleanRun offer a warranty on duct repair and sealing?
Yes. Every duct repair and sealing job at CleanRun is backed by the 365-Day Done Right Promise: if the work is not right within 365 days of the job date, CleanRun makes it right. That guarantee is written into the job record, not a verbal assurance subject to interpretation later. It applies to every job, every time – not just when a manager decides it qualifies. Call (817) 520-8797 to get a written price before any work starts, or to ask a specific question about what the guarantee covers for your scope.
What is a plenum, and does plenum repair cost more?
The plenum is the central sheet-metal box – usually located directly above or below the air handler – that distributes conditioned air into the individual duct runs serving each room. Think of it as the hub that every spoke connects to. Plenum repair costs between $400 and $900 in Fort Worth, depending on whether the issue is a failing seal where the plenum meets the air handler, a cracked or rusted panel, or a full replacement of the plenum box itself. Because the plenum is a pressurized chamber, any gap there represents a significant energy loss – and unlike a single duct run, a leaking plenum affects every room in the home simultaneously.
Key Takeaways
- Duct repair and sealing in Fort Worth costs $350 to $1,200 for most single-story homes, with the most common job landing between $500 and $750.
- Attic location, duct age, number of leak points, and sealing method are the biggest cost drivers in the Fort Worth market.
- Aeroseal is more expensive upfront ($1,200 to $2,400) but is often the right call for systems with limited access or widespread leakage.
- A camera inspection before quoting is the only way to produce an accurate scope – any quote written without one is based on assumptions.
- Every CleanRun job includes a written price before work starts, a documented photo record of every duct run, and the 365-Day Done Right Promise.
- Scheduling in spring or fall avoids peak-season surcharges common in the Fort Worth HVAC market from June through September.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Fort Worth, serving Fort Worth since 2013.
Pricing reflects the Fort Worth market as of 2026. CleanRun Air Duct Cleaning Fort Worth offers free estimates – call (817) 520-8797.
What Our Customers Say
"My allergies genuinely improved. They also told me the ducts did not need sealing, which I had been quoted for elsewhere."
- Petra K."Flat price agreed up front, no per-vent add-ons at the end. That was the whole reason I did not call the coupon company."
- Suzanne B."They found a disconnected duct in the crawl space that had been dumping conditioned air under the house for years. Photographed it, quoted the repair, fixed it."
- Devon A.