Fast, Reliable Duct Repair & Sealing Across Richardson
Most duct repair and sealing jobs in Richardson run between $280 and $950, with same-day service available when you call before noon. We’re local to the Metroplex and typically reach homes in Richardson’s 75080, 75082, and 75083 ZIP codes within 45 minutes to an hour. If your registers are blowing dust, your upstairs rooms won’t cool, or your energy bills have climbed without explanation, the problem is often failed duct seals in your attic, not your AC unit itself.
Our Duct Repair & Sealing team has worked in Richardson since the early 1980s. We know the ranch homes along Arapaho Road, the split-levels near Belt Line Road, and the newer subdivisions east of US-75 in 75082. That matters because a technician who recognizes your neighborhood’s build era will diagnose faster and fix it right the first time. Call (844) 685-6342 - a live person answers, 24 hours a day.
Why Bellows Air Duct & Vent Co. Is Richardson’s Preferred Duct Repair & Sealing Company
We’ve been serving Richardson homeowners for over 42 years, since 1984. In that time, we’ve resealed and repaired ductwork in thousands of homes from the original 1950s tech-suburb developments west of US-75 to the 1990s builds near Spring Valley Road. Our reviews from Richardson customers consistently mention the same things: we show up when we say we will, we explain what’s wrong before we start, and the price on the phone matches the price on the invoice.
Every job gets a camera inspection before and after. You see what we see - separated seams, collapsed flex, degraded mastic - not just a verbal report. Our 90-Day Done Right Promise means if the seal fails or the repair doesn’t hold, we return at no charge. No paperwork to file, no argument. That’s been our policy since Ray Castillo founded the company, and it hasn’t changed.
Our technicians are background-checked, uniformed, and equipped to complete most repairs in a single visit. We carry mastic, foil tape, duct insulation, and replacement flex duct on every truck, so we’re not making a second trip for parts. Calls are answered by a live person around the clock, not an app or voicemail tree.
Our Duct Repair & Sealing Services in Richardson
Duct Sealing
Duct sealing is the most common service we perform in Richardson’s older neighborhoods. In 75080 and 75081, homes built between 1955 and 1980 still run original metal trunk-and-branch systems where the mastic and foil tape have dried out after decades in 140°F attic heat. We remove the degraded material, clean the joints, and apply fresh professional-grade mastic sealant. The result is measured: we verify seal integrity with a pressure test before we leave. A typical duct sealing job in Richardson runs $280-$550 for a single-system home.
Metal Duct Repair
Richardson’s clay soil expands and contracts with seasonal moisture, and that foundation movement pulls metal duct joints apart. We regularly find galvanized trunk lines in pre-1975 homes where every seam has separated. Metal duct repair involves realigning the sections, securing the connections, and resealing with mastic and mechanical fasteners. In some cases, sections of corroded or damaged trunk line need replacement. Metal duct repair in Richardson typically costs $450-$850 depending on linear footage and accessibility.
Flex Duct Repair
Eastern Richardson in 75082 developed later, with flex-duct systems from the 1990s and 2000s now entering their first major service cycle. Flex duct collapses under slab movement, gets punctured by roofers or rodents, and degrades where it connects to metal plenums. We replace damaged runs, reinforce connections with proper straps and collars, and seal with mastic. Flex duct repair in Richardson generally runs $320-$680 per run, with most homes needing two to four runs addressed.
Duct Insulation
Even sealed ducts lose efficiency when insulation is missing or compressed. In Richardson’s unvented attics, supply lines wrapped in original fiberglass batting often have gaps where insulation has fallen away or been disturbed by previous work. We install fresh duct insulation rated for North Texas temperature extremes, reducing heat gain in summer and heat loss in winter. Duct insulation in Richardson typically adds $180-$420 to a sealing job, or $550-$950 as a standalone service for a full system.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Richardson
We specify professional-grade equipment and materials from Nikro, Honeywell, and Aprilaire - the same brands serious HVAC contractors use, not hardware-store substitutes. Our trucks stock mastic sealant, foil tape, duct insulation, and replacement flex duct in standard diameters, so Richardson homeowners aren’t waiting on parts. For specialized components, our supplier relationships mean next-day availability for most items. We don’t guess at what your system needs, and we don’t substitute cheaper materials to hit a price point.
Common Duct Repair & Sealing Problems We See in Richardson Homes
- Clay-soil foundation shifts snap mastic seals on metal duct joints. Richardson’s blackland prairie clay expands when wet and shrinks in drought, moving slab foundations enough to pull apart duct connections that were never designed to flex. The leaks are invisible from below, but your energy bills and dust levels tell the story.
- Original foil tape from the 1960s-70s has fully dried and debonded. In attic temperatures exceeding 140°F for months each summer, the adhesive on old foil tape turns to powder. Every seam opens, and your system draws hot attic air and blown-in insulation fibers directly into supply runs.
- Flex-duct connections in 1990s-2000s eastern Richardson homes collapse under slab movement. The plastic inner liner kinks, the fiberglass insulation compresses, and airflow drops by 30% or more before homeowners notice. These systems also accumulate pollen and mold spores faster due to North Texas’s extended AC season.
- Galvanized trunk lines in pre-1975 homes have corroded at seams and supports. Decades of temperature cycling and condensation attack the metal where it’s thinnest. We find pinholes and separated collars that have been leaking conditioned air into attics for years.
Pricing for Duct Repair & Sealing in Richardson, TX
We show you the full price before we start. No bait coupons, no changes at the door. Here’s what duct repair and sealing costs in Richardson’s market:
| Service | Typical Range in Richardson |
|---|---|
| Duct sealing (single system) | $280 - $550 |
| Metal duct repair (per section) | $450 - $850 |
| Flex duct repair (per run) | $320 - $680 |
| Duct insulation (add-on) | $180 - $420 |
| Duct insulation (full system) | $550 - $950 |
| Comprehensive seal + repair + insulation | $750 - $1,400 |
What moves the price: accessibility of your attic, linear footage of ductwork, extent of separation or damage, and whether we need to replace sections or just reseal. Every estimate is free, and we explain what we’re recommending and why before you decide. We also offer $50 off any repair over $250, a free second opinion on any written estimate, and a permanent 5% senior and veteran discount.
We Also Serve Cities Near Richardson
Our technicians live and work across the Metroplex, so we regularly serve Duct Repair & Sealing in Richardson neighbors in University Park, Highland Park, Garland, and Dallas proper. Same standards, same upfront pricing, same 90-Day Done Right Promise. If you’re near the Richardson border, call and we’ll confirm coverage - we likely already know your neighborhood.
Serving Richardson, TX - Our Local Coverage Area
We’re based in the Richardson 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 - Duct Repair & Sealing in Richardson
Look for uneven cooling between rooms, dust blowing from registers that doesn’t match your filter schedule, and energy bills that rise without rate increases. We confirm seal failure with a camera inspection - you’ll see separated seams and degraded mastic yourself. Call (844) 685-6342 for a free camera inspection and exact quote.
Foundation movement is ongoing in Richardson, but proper repair with flexible mastic and mechanical reinforcement lasts significantly longer than original materials. We use modern sealants rated for thermal cycling and minor structural flex. Some movement is normal; catastrophic separation indicates the repair was done wrong. That’s why we back our work for 90 days, no questions asked.
Sealing stops air loss; insulation stops temperature loss. In a 140°F Richardson attic, sealed metal ducts still gain 15-25°F before air reaches your rooms. We recommend both for homes with uninsulated or degraded original wrapping. During your free estimate, we’ll show you current insulation condition on camera and price both options so you can decide.
Yes. Flex-duct systems in eastern Richardson’s 1990s-2000s builds are entering their first major service cycle at 25 years. Connections loosen, inner liners tear, and insulation compresses. We inspect with a camera and can usually address problem runs without replacing the entire system. Most 1999-era homes need two to four runs repaired or replaced.
Repair is usually the better value in Richardson’s pre-1980 homes. Original galvanized metal trunk lines, if not corroded through, outlast flex duct and can be resealed to modern standards for 30-50% of replacement cost. We replace only when metal is perforated, structurally compromised, or inaccessible without major demolition. We’ll show you both options with real numbers and let you decide.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Richardson since 1984.