Duct Repair & Sealing in Crafton, PA - Same-Day Service, Done Right the First Time

Fast, Reliable Duct Repair & Sealing Across Crafton

Duct repair and sealing in Crafton typically runs $280-$650 for most residential jobs, with same-day service available when you call before noon. We’re Bellows Air Duct & Vent Co., and we’ve been driving out to Crafton from our Pittsburgh-area routes for decades. We know the borough’s narrow hillside streets, the tight alley access behind Steuben Street and Noble Street, and the particular headache of working on 1920s brick homes where the duct chase is wedged between plaster walls and the foundation. Our Duct Repair & Sealing team carries mastic sealant, flex duct, and sheet metal fabricated to fit the odd angles we find in Crafton’s housing stock. Call (844) 685-6342 and you’ll reach a live person, 24 hours a day. We’ll give you an upfront price before we lift a single tool, and we’ll stand behind the work with our 90-Day Done Right Promise.

Call (844) 685-6342

Why Bellows Air Duct & Vent Co. Is Crafton’s Preferred Duct Repair & Sealing Company

We’ve served Allegheny County homeowners for over 42 years, and Crafton has always been a regular stop on our route. Ray Castillo, who leads our company, started this business in 1984 on the principle that a tradesman should say what he’ll do and then do it. That hasn’t changed.

Our technicians are background-checked and uniformed, and they know Crafton’s housing. They’ve worked on the converted coal-era homes along West Steuben, the frame houses off Crafton Boulevard, and the hillside brick rows where ductwork runs through chases barely 14 inches wide. They know to check for the greasy black residue that coats original galvanized trunk lines in these homes, residue left from decades of coal combustion before the forced-air retrofit. Miss that, and you’ll be sealing over contamination that will re-aerosolize into your living space.

We answer our own phones. No voicemail tree, no app. A real person picks up, day or night, and can dispatch a technician to Crafton with a realistic arrival window. Most repairs are completed in a single visit. Our camera inspection shows you the condition of your ductwork before we start and verifies the seal after we finish. The price we quote on the phone is the price on the invoice. No bait coupons, no changes at the door.

Our 90-Day Done Right Promise is stamped on every job. If something isn’t right, we make it right. No paperwork to file, no argument. That’s been our way since 1984.

Our Duct Repair & Sealing Services in Crafton

Duct Sealing

Leaky ductwork in a Crafton home can waste 20-30% of your heated or cooled air before it reaches the rooms you actually use. In these older homes with duct chases running through unconditioned attics and basement plenums, the losses are often worse. We seal supply and return trunk lines, junction boxes, and register boots using professional-grade mastic sealant, not the foil tape that fails within a season in Pittsburgh’s humidity. Our process includes a pre-sealing camera inspection to locate leaks and a post-sealing verification to confirm the fix. In Crafton’s coal-era homes, we also assess whether accumulated soot and residue require aggressive cleaning before sealing, poor mastic adhesion on greasy metal is a common cause of callbacks we’ve seen too many times.

Mastic Sealant Application

Mastic is the only sealant we trust for permanent duct repairs in Crafton. This fibrous, paste-like compound brushes onto joints and seams, then cures to a flexible, airtight bond that lasts 15-20 years. Unlike tape, it won’t peel when Chartiers Creek valley humidity swells your basement plenum with moisture. We apply mastic with full access to the joint, which means we sometimes need to cut access panels in tight Crafton chases, then seal and patch those panels properly. A typical mastic sealing job in Crafton runs $320-$480 for a single system, depending on how many joints need treatment and whether we need to create access.

Metal Duct Repair

Original galvanized and sheet-iron trunk lines in Crafton’s 1920s-1950s homes can corrode, separate at seams, or get damaged during renovation. We repair these with matching gauge metal, proper S-locks and drives, and mastic-sealed joints. Here’s where Crafton’s coal history matters: that greasy black residue on old metal ducts isn’t ordinary household dust. It’s a byproduct of decades of coal combustion that can re-aerosolize if disturbed without negative-pressure containment. On a recent job on Steuben Street, we sealed a leaking flex duct junction in a converted coal-era home where soot-laden air was escaping into a finished attic. Using mastic sealant and Abatement Technologies HEPA vacs with negative pressure, we contained the hazardous residue and restored proper airflow. Metal duct repair in Crafton typically ranges from $350-$620.

Flex Duct Repair

Flex duct, the insulated flexible tubing common in retrofits and attic runs, crushes, tears, or pulls loose at collars over time. In Crafton’s tight attic spaces, often with headroom under 4 feet at the eaves, flex duct damage is common where it’s been stepped on or compressed by storage. We replace damaged sections with new insulated flex, secure them with mechanical collars and mastic (never tape alone), and support them properly to prevent sagging. A standard flex duct repair in Crafton runs $280-$450.

Duct Insulation

Uninsulated or degraded duct insulation in Crafton basements and crawl spaces wastes energy and invites condensation. We wrap supply trunks with formaldehyde-free fiberglass insulation, sealed with vapor barrier, to maintain air temperature and prevent the moisture buildup that leads to mold. Duct insulation work in Crafton typically costs $400-$750 depending on linear footage.

Trusted Brands We Service in Crafton

We build our jobs around equipment that serious HVAC contractors specify, not hardware-store substitutes. For HEPA containment and vacuum systems on coal-soot jobs, we use Abatement Technologies machines rated for hazardous particulate. Our rotary cleaning and inspection tools come from Rotobrush and Nikro, brands we’ve relied on for years because they hold up to daily use in tight spaces like Crafton’s duct chases. We don’t list every brand to impress you. We mention these because they’re what’s in our trucks right now, and they’re what we’ll use on your job.

Common Duct Repair & Sealing Problems We See in Crafton Homes

• Coal-era residue compromising new seals. Skipping pre-sealing blast cleaning on soot-coated metal ducts leads to poor mastic adhesion and re-leaks within a year. We see this on homes that had another company seal over the grime.
• Tape failure in humid basement plenums. Using standard tape instead of mastic on flex duct repairs in tight alley-access homes fails within one season due to condensation from Chartiers Creek valley humidity.
• Mold growth behind fresh repairs. Neglecting to seal basement plenums near Chartiers Creek’s humidity zone allows mold to colonize behind new repairs, destroying the seal and spreading spores.
• Damaged flex in inaccessible attics. Crafton’s narrow-lot, multi-story homes often have attic access hatches too small for a person, let alone equipment. We carry compact inspection cameras and tools specifically for these spaces.

Pricing for Duct Repair & Sealing in Crafton, PA

We Also Serve Cities Near Crafton

Our routes cover the full Allegheny County corridor west of Pittsburgh. We regularly perform Duct Repair & Sealing in Crafton and neighboring Dormont, Carnegie, McKees Rocks, and Mount Lebanon. The same technician standards, the same upfront pricing, the same 90-Day Done Right Promise apply whether we’re working on a hillside home in Crafton or a ranch in Mount Lebanon.

FAQs - Duct Repair & Sealing in Crafton