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.
Fast, Reliable Duct Sealing Across Worthington
Duct sealing in Worthington typically runs $450 – $1,200 for a whole-home system, and most jobs are scheduled within a few days of your call. We’re the Duct Sealing in Worthington crew that knows the difference between a 1920s colonial on Dublin-Granville Road and a 1960s ranch off Schrock Road, because we’ve worked on both. Dispatch and scheduling are coordinated from our Cleveland office, but our technicians live in and around Franklin County and arrive in uniform, in a marked van, inside the window we gave you. Call (361) 326-5060 for a written estimate before any work starts.
Why Hollis Air Duct Cleaning Is Worthington’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Worthington customers come back because we price in writing and stand behind the work for a full year. The 365-Day Done Right Promise means if a sealed joint fails or insulation slips, we return and make it right at no charge, including a free second visit. No negotiation, no runaround.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. And when you call (361) 326-5060, a live person answers, 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday for a scheduling question.
We know Worthington’s housing stock. The historic district’s pre-1950 homes with original galvanized ductwork. The mid-century ranches and splits with early rigid systems that have never been touched. The apartment and condo buildings where parking is tight and equipment access means coordinating with building management. That local knowledge changes how we approach every job.
Duct Sealing Services in Worthington
Duct Sealing Services in Worthington address a specific problem: conditioned air leaking out of your ducts before it reaches your rooms. In a typical Worthington home, 20 – 30% of heated or cooled air escapes through gaps, disconnected joints, and deteriorated seals. Our Duct Sealing team uses mastic sealant and metal-backed tape on accessible joints, then verifies the seal with negative pressure testing. A typical whole-home duct sealing job in Worthington runs $450 – $1,200 depending on system size and accessibility.
Identifying Transite and Aging Ductwork
In Worthington’s historic downtown blocks, some original supply and return ducts include transite (asbestos-cement) sections. We identify those runs before sealing anything and follow Ohio EPA handling and disposal rules. Sealing over transite without proper containment creates a health and compliance hazard. We flag it, document it, and advise on specialized handling.

Negative Pressure Verification
After sealing, we test. Our Nikro negative-air machines pressurize the system so we can measure leakage at the trunk lines and branch ducts. If air is still escaping into wall cavities or shared chases, we find it and fix it before we pack up. Verification is part of the job, not an add-on.

What happens when you call
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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.
Duct Insulation in Worthington
Duct Insulation in Worthington is about stopping thermal loss, not just air loss. Uninsulated or poorly insulated ductwork in your attic, crawl space, or basement forces your HVAC system to work harder. In Worthington’s climate, hot humid summers and cold winters mean temperature swings that punish uninsulated metal. Wrapping duct runs with Guardsman duct insulation typically adds $300 – $800 to a sealing job, depending on linear footage and access.
Condensation Control in Humid Summers
Worthington’s summer humidity hits hard. Cold air moving through uninsulated ducts in a hot attic creates condensation. That moisture breeds mold and mildew inside the system. Proper insulation eliminates the temperature differential that causes sweating.
Historic Home Retrofits
Older homes weren’t built for modern insulation standards. We retrofit Guardsman duct insulation onto existing galvanized trunks without damaging plaster, trim, or original framing. Careful handling matters in a 1920s colonial where every wall tells a story.
Trusted Brands We Service in Worthington
We carry professional-grade equipment and materials from Rotobrush, Nikro, and Guardsman, the same tools commercial crews use on larger buildings. For Worthington homeowners, that means we stock the right mastic, metal-backed tape, and insulation for your specific duct material, whether it’s original galvanized steel from the 1940s or rigid ductboard from the 1970s. We don’t make a supply run in the middle of your job. Parts are on the van. The work gets done in one visit.
Common Duct Sealing Problems We See in Worthington Homes
- Disconnected joints in mid-century ranches. The 1950s-70s splits and ranches off Schrock Road and Worthington-Galena Road often have original rigid duct systems where tape has dried and joints have pulled apart. Conditioned air leaks into wall cavities while rooms stay cold.
- Transite sections in historic downtown homes. Pre-1950 houses near the Village Green and along High Street may contain asbestos-cement duct sections that cannot be sealed with standard methods. Improper handling violates Ohio EPA rules and creates exposure risk.
- Shared chases in apartment and condo buildings. Dense housing near Old Worthington often has duct runs that overlap adjacent units. Sealing one system without camera inspection can force air into a neighbor’s space or create backdrafting.
- Deteriorated insulation on basement trunks. Original fiberglass wrap on galvanized supply lines crumbles after decades. The duct leaks thermally even if it doesn’t leak air, driving up heating bills through Worthington’s cold winters.
Pricing for Duct Sealing in Worthington, OH
A typical whole-home duct sealing in Worthington runs $450 – $1,200. Duct insulation adds $300 – $800. What moves the price: system size (a 1,200 square foot ranch versus a 3,500 square foot two-story), access (finished basement ceiling versus open crawl space), and whether we find transite or other conditions requiring specialized handling.
We give you one flat price per system, agreed in writing before work starts. No per-vent pricing. No add-ons at the door. The price we write down is the price you pay. Call (361) 326-5060 for a free estimate. We’ll ask about your home’s age, square footage, and any known duct issues, then give you a range you can plan around.
We Also Serve Cities Near Worthington
Our crews work throughout the Columbus metro, including Worthington, Columbus, Cleveland, Parma, and Lorain. Same standards, same written pricing, same 365-Day Done Right Promise at every location.
Serving Worthington, OH - Our Local Coverage Area
We’re based in the Worthington 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 About Duct Sealing in Worthington
Yes. Pre-1950 homes in the historic district may contain transite (asbestos-cement) duct sections that require Ohio EPA-compliant handling before any sealing work begins. Our technicians identify these runs during the initial camera inspection and follow proper containment and disposal procedures. Call (361) 326-5060 to schedule an inspection of your historic home’s duct system.
Yes, we regularly work in Worthington’s denser buildings near Old Worthington and along High Street. We coordinate with building management for parking and access, and our portable Nikro equipment fits through standard doorways and elevators. Shared duct chases require camera inspection to avoid affecting adjacent units. Call (361) 326-5060 to discuss your building’s specific access situation.
We inspect the full run with a camera first, then clean and seal only the sections that belong to your unit without disturbing common infrastructure. In Worthington’s multi-unit buildings, we document our work for building management and never modify shared stacks without written approval. We also offer Worthington Dryer Vent Cleaning for residents who need dedicated vent maintenance. Call (361) 326-5060 for a free assessment of your condo’s dryer vent configuration.
Uneven temperatures between rooms, dust collecting rapidly at registers, and utility bills that climb without explanation are the three most common indicators. In Worthington’s mid-century ranches, original tape seals have typically dried and failed after 60+ years. A camera inspection confirms disconnected joints and deteriorated insulation. Call (361) 326-5060 to schedule a look.
Yes. Humid summers create condensation in leaky ducts, which breeds mold and mildew. Heavy pollen from Worthington’s mature tree canopy gets pulled into return ducts through gaps and circulated through your home. Sealed, insulated ducts block both problems. Call (361) 326-5060 for a free estimate on sealing your system before the next humid season.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Worthington and the greater Columbus area since 2004.




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