Fast, Reliable Duct Repair & Sealing Across Wellington
Duct repair and sealing in Wellington, KS typically costs between $250 and $850 depending on the extent of damage, with most flex duct repairs and mastic sealing jobs completed in a single visit. Our crews are dispatched from our Wichita office and usually reach Wellington properties within 45 minutes to an hour. Call (844) 685-6342 for upfront pricing and same-day scheduling.
We’ve been working on Wellington homes long enough to know the local patterns. The flex duct running through attics here was installed during the building boom of the late 1970s through the 1990s, and that material doesn’t last forever in Kansas heat cycles. When joints pull apart or liners crack, you’re paying to cool your attic instead of your bedrooms. Our Duct Repair & Sealing team handles everything from spot repairs to full-system resealing, and we show you the camera footage before we quote a dollar.
Why Bellows Air Duct & Vent Co. Is Wellington’s Preferred Duct Repair & Sealing Company
Bellows Air Duct & Vent Co. has built its reputation in south-central Kansas over 42 years by doing what we say we’ll do. Ray Castillo has led this company since 1984 with a simple standard: the job isn’t finished until the homeowner sees the proof on camera and the work is backed in writing for 90 days.
Wellington homeowners know us because we answer the phone. Not an app. Not a voicemail tree. A live person, 24 hours a day. When your AC is blowing attic air into the hallway at 10 p.m., that matters.
Our response time to Wellington averages under an hour from dispatch. We know the local streets, the typical CBS and frame construction in neighborhoods around the city, and the specific failure modes that hit homes here after decades of summer heat and winter cold. Our technicians are background-checked, uniformed, and equipped to complete most repairs in one visit.
We don’t bait-switch. The price we quote over the phone is the price on the invoice. That’s been our policy since 1984.
Our Duct Repair & Sealing Services in Wellington
Flex Duct Repair
Flex duct is the standard in Wellington homes built from the 1970s through the 1990s, and it’s reaching the end of its service life. The inner plastic liner becomes brittle after 25 to 40 years of heat cycling, especially in attics that hit 140 degrees in July. We see cracked liners and collapsed sections regularly in neighborhoods throughout Wellington. Our repair protocol includes camera inspection to locate the damage, replacement of failed sections with new R-8 insulated flex duct, and proper support strapping to prevent future sagging. We don’t patch over degraded material - we replace what’s failed and seal what remains sound.

Duct Sealing
Even intact ductwork leaks. Joints at the air handler plenum, connections between trunk lines and branch ducts, and register boots all lose conditioned air. In Wellington’s climate, where summers demand heavy AC use and winters pull hard on heating systems, those leaks add up to real money. We pressurize the system, measure leakage with a duct blaster, then seal accessible joints with mastic sealant and foil tape. For systems with significant leakage, we calculate the payback period so you can make an informed decision.

Metal Duct Repair
Older Wellington homes and some commercial buildings have galvanized steel ductwork. These systems corrode at seams, separate at joints, and transmit noise. We repair rusted sections, reseal seams with mastic, and add mechanical fasteners where original connections have failed. Metal duct can last indefinitely with proper maintenance, and sealing an existing metal system is often more cost-effective than full replacement.

Duct Insulation
Uninsulated or poorly insulated duct in a Wellington attic is a problem year-round. In summer, cool air warms before it reaches your rooms. In winter, heated air cools. We install R-8 insulation on flex duct and wrap metal trunk lines with fiberglass insulation and vapor barrier. Proper insulation also prevents condensation that leads to mold growth - a real concern in humid summer conditions.

Mastic Sealant Application
Mastic is the professional standard for duct sealing. Unlike tape alone, mastic remains flexible and maintains its seal through temperature swings. We apply mastic with a brush or sprayer to all accessible joints, then reinforce with foil tape where required by code. The result is a sealed system that holds up. Our 90-Day Done Right Promise covers every mastic application - if a joint opens, we return at no charge.

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 Wellington
We carry parts and materials from Abatement Technologies, Rotobrush, and Aprilaire - the same brands specified by serious HVAC contractors. That means faster repairs for Wellington homeowners because we don’t wait on special orders. Our trucks are stocked with R-8 flex duct, mastic, foil tape, and insulation in standard sizes. For specialized components, our Wichita warehouse has next-day availability. We don’t substitute cheaper materials to pad margin. The specification on your invoice is what gets installed.
Common Duct Repair & Sealing Problems We See in Wellington Homes
- Brittle flex duct liners from age and heat cycling. Wellington’s attic temperatures in July and August cook the plastic inner liner of 1980s and 1990s flex duct until it cracks. Conditioned air escapes into the attic, and the homeowner pays for cooling they never feel. We find this in homes across Wellington, especially those with original construction ductwork.
- Joint separation at the air handler plenum. The plenum connection is the highest-pressure point in the system. In Wellington homes where the air handler is attic-mounted, vibration and thermal expansion loosen this joint over time. It’s often the single largest leak in the system.
- Rodent damage to exposed flex duct. Raccoons, squirrels, and mice access attics through soffit gaps and roof penetrations. They chew flex duct for nesting material or to access the conditioned air stream. We repair the damage and can recommend exclusion measures to prevent recurrence.
- Failed tape seals from improper original installation. Duct tape - the gray cloth stuff - was never meant for ducts. It dries out and falls off. We remove failed tape, clean the surface, and apply mastic for a permanent seal. This is routine maintenance on Wellington homes with original ductwork.
Pricing for Duct Repair & Sealing in Wellington, KS
Here’s what duct repair and sealing costs in the Wellington market:
- Spot flex duct repair (single section): $250-$400
- Mastic sealing of accessible joints (whole system): $450-$750
- Flex duct replacement (per run): $300-$550
- Metal duct repair and resealing: $400-$850
- Duct insulation upgrade: $500-$900
Factors that affect your specific price: accessibility of the ductwork, extent of damage found during camera inspection, and whether the air handler location requires additional safety measures. We inspect with a camera before quoting, so you see what we see. Our $50 Off Any Repair Over $250 standing offer applies to ductwork repairs. We also provide free second opinions on any written estimate you’ve received.
Call (844) 685-6342 for an exact quote - estimates are free, and pricing is disclosed before we lift a tool.
We Also Serve Cities Near Wellington
Our crews work throughout the Wichita metro area and surrounding communities. We regularly handle Duct Repair & Sealing in Wellington and also serve Mulvane, Haysville, Derby, and Wichita itself. Same standards, same upfront pricing, same 90-Day Done Right Promise - regardless of zip code.
Serving Wellington, KS - Our Local Coverage Area
We’re based in the Wellington 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 Wellington
It doesn’t - the dust load in Wellington, KS is actually typical for the Great Plains, with agricultural particulate and seasonal pollen as the main contributors. What you’re likely noticing is that leaks in your ductwork pull attic air into the system, and that attic air carries fiberglass particles, rodent debris, and years of accumulated dust. Seal the ducts, and the “extra” dust disappears. Call (844) 685-6342 for a pressure test and camera inspection.
Yes. Sagging flex duct has lost its support strapping or the inner liner has collapsed, restricting airflow. Cool exterior surfaces in summer mean the insulation has degraded or the duct is leaking conditioned air into the attic. Both conditions waste energy and strain your AC. We replace collapsed sections and restore proper support. Call (844) 685-6342 for a free estimate - most flex duct repairs are completed in one visit.
Yes. Homes built in the 1990s have flex duct approaching 30 years of service life. The inner liner is likely brittle, joints may be leaking, and the previous owner’s maintenance history is unknown. Our camera inspection shows the actual condition of the ductwork and identifies any repairs needed before you settle in. We offer this as a standalone service with upfront pricing. Call (844) 685-6342 to schedule before your move-in date.
Run the system for 30 minutes and check for uneven cooling between rooms, musty odors from vents, and unusual cycling of the outdoor unit. These symptoms indicate duct leaks or blockages that developed during the idle months. We recommend a camera inspection and pressure test before full-season operation - especially if rodents had access to the attic. Call (844) 685-6342 to schedule a preseason check; our $89 Seasonal Tune-Up includes duct inspection.
Yes. Flex duct requires mastic on joints plus proper support to prevent sagging. Metal duct needs mastic at seams and sometimes gasketed connections for thermal expansion. Wellington’s temperature swings - from below zero in winter to over 100 in summer - stress all duct materials, but the failure modes differ. We inspect your specific system and specify the right repair method. Call (844) 685-6342 for an assessment tailored to your duct type.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Wellington and south-central Kansas since 1984.