Duct Sealing in Medina - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Medina

Duct sealing in Medina typically runs $800 – $2,400 for a whole-home job, depending on how much of the original galvanized ductwork can be saved and how much needs replacement. We’re the crew that shows up when we said we would, prices the job in writing before touching anything, and seals it by The Garrison Standard. Our Duct Sealing in Medina crews dispatch from our Cleveland office and cover the full city, from the historic homes around Medina Square out to the newer subdivisions near Reagan Parkway.

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Medina’s housing stock tells a story most homeowners don’t discover until they pull a register. The Victorian and early-1900s homes near the square still carry original galvanized steel ducts, often stamped with the mark of a local sheet metal shop that closed decades ago. These systems were sized for gravity coal furnaces, not modern forced-air, and they’ve been leaking pressure and collecting debris ever since. We know what to look for because we’ve been inside them.

Why Hollis Air Duct Cleaning Is Medina’s Preferred Duct Sealing Company

We’ve been in business since 2004 as part of the Garrison Partners family, and our reputation in Medina is built on showing up squared away and leaving with the job done right. Roy Castellanos leads our operation, and every technician who walks into your Medina home is background-checked, uniformed, and trained to The Garrison Code: arrive inside the window, price in writing, work by the book, leave the site clean.

Our 365-Day Done Right Promise covers every sealing job in writing. If the work fails within a year, we come back and make it right at no charge, including a free second visit. No negotiation, no runaround. That’s rare in this trade, and we put it on paper every time.

Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday when your blower motor is short-cycling on a Saturday night.

We know Medina’s neighborhoods. We understand the difference between a 1910 Craftsman on West Liberty Street and a 1972 ranch off Lake Road, and we know which duct problems each one tends to hide. That local knowledge means we diagnose faster and quote accurately the first time.

Duct Sealing Services in Medina

Duct Sealing Services in Medina start with understanding what kind of duct system we’re working with, because the right fix for a 1920s galvanized trunk is different from the right fix for a 1990s flex-duct attic run. The job involves finding every leak, gap, and disconnected joint in your ductwork, then sealing them with mastic compound and mechanical fasteners where appropriate, not tape that dries and fails. Most Medina homeowners need sealing when rooms heat or cool unevenly, when utility bills spike without explanation, or when a duct cleaning reveals crushed or separated runs that are bleeding conditioned air into walls and basements.

A typical whole-home duct sealing job in Medina runs $800 – $2,400. Smaller partial jobs, like sealing accessible basement trunks and boot connections, can run $400 – $800. We give you a written price before any work starts, and that price does not move at the door.

Leak Detection and Pressure Testing

We pressurize your duct system and measure air loss to find leaks you can’t see. In Medina’s older homes, we often find 20 – 35% air loss through seams that have worked loose over a century of thermal cycling. The test gives us a baseline and proves the improvement when we’re done.

Mastic Sealing of Accessible Ductwork

We brush or trowel professional-grade duct mastic onto every seam, joint, and penetration. Mastic stays flexible, won’t dry and crack like tape, and is rated for the temperature swings your Medina ducts see every year. We seal boots where they meet drywall, trunk-line seams, and plenum connections that are common failure points.

Duct Insulation in Medina

Duct Insulation in Medina addresses a separate problem from sealing: thermal loss through thin or uninsulated metal ducts, especially in basements, crawl spaces, and attic runs. Medina’s humid summers and cold winters mean uninsulated ducts sweat in July and bleed heat in January. The job involves wrapping accessible ductwork with formaldehyde-free fiberglass insulation and vapor barrier, or replacing damaged insulation on existing wrapped ducts. Most Medina homeowners need insulation when they notice condensation on basement ducts, musty smells from duct sweating, or rooms that never reach temperature despite good airflow.

Whole-home duct insulation in Medina typically runs $1,200 – $3,000, with smaller basement-only jobs at $600 – $1,200. We assess what you have, quote in writing, and explain exactly what improvement to expect.

Vapor Barrier Replacement

Old insulation vapor barrier tears and lets moisture reach the fiberglass. We remove damaged wraps, treat any surface mold, and install new insulation with intact vapor sealing. This stops the condensation cycle that corrodes Medina’s older metal ducts from the outside in.

Attic Duct Insulation Upgrades

Attic ducts in Medina see temperature extremes. Uninsulated or poorly insulated runs can lose 30% or more of their heating and cooling before it reaches your rooms. We wrap accessible attic ducts with R-6 or higher insulation and seal all seams first, so you’re not insulating a leaky system.

Trusted Brands We Service in Medina

We carry equipment and materials from Rotobrush, Aprilaire, and Abatement Technologies, the same brands commercial crews specify. For Medina homeowners, that means we stock the right mastic compounds, mechanical fasteners, and insulation wraps locally, so we’re not ordering parts and making you wait. Our Rotobrush rotary brush systems and Nikro negative-air machines let us clean before we seal, which matters enormously on Medina’s older galvanized systems where sealing over debris just traps the problem. We also source filtration and ventilation products from Honeywell and Guardsman when your system needs more than sealing alone.

Common Duct Sealing Problems We See in Medina Homes

• Coal dust and rust under sealed seams. In Medina’s historic district, we regularly open galvanized trunks and find a layer of coal dust from gravity-furnace days, plus active rust from decades of condensation. Seal over that and the corrosion continues underneath; the mastic cracks and leaks return within a season or two.
• Crushed or disconnected runs under floor joists. On a 1908 Victorian off Medina’s square, our crew pulled registers and ran camera inspection on original riveted galvanized trunks, finding three crushed or disconnected runs under the first-floor joists and heavy coal dust that standard vacuuming missed. We used Rotobrush agitation tools under negative pressure with HEPA filtration to source-remove debris, then sealed the accessible seams and boot penetrations to stop the lint pathway and pressure loss at the air handler. The homeowner’s second-floor registers went from barely moving tissue to a measurable airflow, and the blower motor stopped short-cycling.
• Asbestos-wrapped ducts in mid-century ranches. Homes built in the 1960s and 70s around Medina often have asbestos-wrapped ducts or undersized returns. Sealing without addressing return capacity leaves the supply-return balance wrong, and the air handler still runs hot and inefficient.
• Undersized legacy trunks creating back pressure. The older neighborhoods around Medina Square have galvanized trunks rated for gravity furnaces, not modern forced-air blowers. Seal every leak without upsizing critical runs and you can actually reduce total airflow, making the system work harder, not smarter.

Pricing for Duct Sealing in Medina, OH

We Also Serve Cities Near Medina

Our Duct Sealing crews cover Brunswick, Wadsworth, Strongsville, and Rittman from our Cleveland-area dispatch. Same written pricing, same 365-Day Done Right Promise, same background-checked uniformed technicians at every stop.

FAQs About Duct Sealing in Medina