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.
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AfterFast, Reliable Duct Sealing Across Freeport
We’re the crew Hollis Air Duct Cleaning sends to Freeport when homeowners call about rooms that never heat evenly, utility bills that climb for no clear reason, or that faint musty pull from every vent. Our dispatch team answers live at (361) 326-5060, and scheduling runs through our New York City office with crews who know the difference between a Merrick basement job and a Freeport slab-on-grade raised ranch. We’ve worked the low-lying blocks along the Nautical Mile, the post-war Capes north of Sunrise Highway, and the newer canal construction south of it. Salt air, slab-embedded galvanized ductwork, and the lingering effects of Superstorm Sandy flooding aren’t abstract concepts for us. They’re the conditions we plan for before the van ever turns onto your street.
Why Hollis Air Duct Cleaning Is Freeport’s Preferred Duct Sealing Company
We’ve been at this since 2004 as part of the Garrison Partners family, and our Duct Sealing in Freeport reputation was built one written estimate at a time. Freeport homeowners aren’t looking for the lowest teaser quote. They’re looking for the quote that stays the same when the technician is standing in their living room. That’s why we put our price in writing before any work starts, and it’s why our 365-Day Done Right Promise covers every seal we make. If it fails, we come back at no charge. No negotiation, no runaround.
Our technicians are background-checked and uniformed. You know who’s arriving before they knock. They show up inside the quoted window, work by The Garrison Code, and leave the site clean. Calls are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues.
Roy Castellanos leads this operation, and the standard he sets is simple: price it before you touch it, do it by the book, and stand behind it for a full year. That’s not marketing language. It’s the written terms on every Freeport job we run.
HVAC Duct Sealing in Freeport
HVAC Duct Sealing in Freeport is rarely the straightforward wrap-and-tape job you’d see in a basement-ranch town. Our raised ranches and Capes, many built on slab foundations in the 1950s and 60s, bury original galvanized supply trunks under concrete. We can’t crawl to them. We seal from the accessible points: the plenum at the air handler, the register boots where they meet the floor or wall, and any exposed trunk joints in attics or utility closets. The goal is the same – stop conditioned air from leaking into wall cavities, slab voids, and attic spaces – but the method is shaped by Freeport’s housing stock, not some generic playbook.
A typical HVAC duct sealing job in Freeport runs $450 – $950 per system. Homes with multiple zones, which is common in the larger split-levels and newer canal construction, are priced per system because each has its own plenum, blower, and trunk network. We don’t lump three systems into one vague quote and then surprise you at the door.
Slab-Embedded System Sealing
When the main trunk lives under concrete, we seal at the termination points. That means mastic and reinforced mesh at every boot collar, gasket replacement where registers meet the floor, and pressure testing before and after to measure actual improvement. We document every seal location on a floor plan we leave with you.
Multi-System Home Pricing
A three-system house in the canal district isn’t three times the work of a single-system Cape, but it is three separate plenums, three separate sets of boots, and three separate pressure tests. Per-system pricing keeps the math honest. You see exactly what you’re paying for each zone.
Duct Repair in Freeport
Duct Repair in Freeport often starts with a homeowner noticing something our sealing crew flagged first: rust bloom on a register, a boot that moves when the system cycles, or a whistling noise that wasn’t there last season. In this town, repair means dealing with salt-corroded galvanized, storm-damaged returns in flood zones, and the occasional crushed trunk from a post-Sandy renovation that never got inspected properly. We don’t slap mastic over rust and call it fixed. We remove the corrosion source, replace what can’t be salvaged, and seal only after the metal is sound.
Duct repair in Freeport typically runs $280 – $650 for localized work, and $800 – $1,400 when we’re replacing a corroded trunk section or rebuilding a flood-damaged return path. Every repair gets the same written price guarantee and 365-Day Done Right Promise as our sealing work.
Salt Corrosion Remediation
Galvanized duct walls within a mile of the coast, and especially south of Sunrise Highway in the Sandy flood zone, pit faster than inland metal. We test for salt residue, treat affected surfaces with anti-corrosion compound, and replace sections where the wall thickness has degraded past safe sealing.
Post-Storm Damage Repair
Homes that took water in 2012 still show up with organic matter and salt crystallization in returns that were “cleaned” but never properly restored. We run camera inspection, remove debris with rotary agitation and HEPA-negative-air extraction, then repair or replace the damaged sections. A salt-residue test confirms the work before we close up.
Trusted Brands We Service in Freeport
Our vans carry professional-grade equipment, not hardware-store substitutes. For duct sealing and repair in Freeport, we work with Rotobrush rotary brush systems for mechanical agitation inside corroded galvanized runs, Nikro negative-air machines for HEPA-contained debris extraction, and filtration components from Honeywell, Aprilaire, and Guardsman. We stock common boot sizes, gasket materials, and mastic compounds matched to coastal conditions, so most Freeport jobs don’t wait on parts. When a 1957 raised ranch off Atlantic Avenue needs a custom boot fabricated for a slab-embedded trunk, we measure, cut, and seal in the same visit rather than leaving you with open ducts and a return appointment two weeks out.
Common Duct Sealing Problems We See in Freeport Homes
- Slab-embedded trunks leaking at every boot collar. In Freeport’s raised ranches south of Sunrise Highway, the galvanized supply trunk sits in concrete with no access from below. Sealing only the attic trunk while ignoring the boot collars leaves 30 – 40% of your conditioned air bleeding into the slab void. We pressure-test the full system and seal every accessible joint.
- Mastic applied directly over rust bloom. Some crews see corrosion and cover it with sealant. The rust keeps eating the duct wall underneath, and the seal fails within a season. We remove corrosion first, treat the metal, then seal sound surfaces.
- No documentation on multi-system homes. A Freeport split-level with three zones needs a seal-location map, before/after camera footage, and pressure-test results for each system. Without it, you can’t prove what was done on ductwork you’ll never see. We provide all three on every job.
- Salt air accelerating corrosion in canal-zone homes. The breeze off the South Shore canals carries enough salt to pit galvanized duct walls within five to seven years in unconditioned spaces. We test for salt residue and apply anti-corrosion treatment as standard practice in these zones, not as an upsell.
Pricing for Duct Sealing in Freeport, NY
Duct sealing in Freeport runs $450 – $950 per HVAC system. That range covers labor, materials, pressure testing, and the documentation we leave behind: seal-location map, before/after camera stills, and pressure differential readings. What moves the price within that range is the number of boots and joints we can access, the condition of the existing metal (salt corrosion requires prep work that sound metal doesn’t), and whether we’re sealing one system or three.
Duct repair, when needed before sealing can hold, adds $280 – $650 for localized fixes and $800 – $1,400 for trunk replacement or flood-damage restoration. We don’t bundle repair into a vague “sealing” quote and then reveal the damage later. Our technician inspects with a camera, shows you what we found, and writes the full price before any work starts.
Estimates are free. Call (361) 326-5060 and we’ll schedule a camera inspection at no charge.
We Also Serve Cities Near Freeport
Our crews run regular routes through Hempstead, Long Beach, Levittown, and Hicksville. Each town gets the same written-price, 365-Day Done Right Promise standard we bring to Freeport, though the housing stock and access conditions differ. Merrick’s basements make duct sealing a different job entirely. We price and plan accordingly.
Serving Freeport, NY - Our Local Coverage Area
We’re based in the Freeport 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 Freeport
Your raised ranch likely has two or three independent HVAC systems, each with its own plenum, blower, and trunk network. Per-system pricing reflects actual labor and materials per zone, not a guess that balloons once we’re inside. A single-system Cape on North Grove Street is one price. A three-zone split-level on the canals is three separate jobs, and we quote them separately so you see exactly what each costs. Call (361) 326-5060 for a free estimate – we’ll count your systems during the camera inspection.
We seal what we can reach: the plenum at the air handler, the boot collars where ducts meet your floors or walls, and any exposed joints in attics or utility closets. We can’t wrap a trunk that’s under concrete, but we can pressure-test the system, seal every accessible leak point, and measure the improvement. In Freeport’s slab-on-grade homes, that’s the standard approach and it works. Call (361) 326-5060 to schedule a pressure test and see what your system is actually losing.
We leave you with three things: before/after camera footage of the work we performed, a floor plan marked with every seal location, and pressure-test results showing the leakage reduction in CFM. If the numbers don’t improve, we don’t call it done. The 365-Day Done Right Promise covers any seal failure within a year at no charge. Call (361) 326-5060 if you want to see sample documentation before booking.
Yes. Freeport’s South Shore location means salt-laden air reaches homes a mile inland, and galvanized duct walls in unconditioned spaces show pitting within five to seven years. After Superstorm Sandy, saltwater flooding in zones south of Sunrise Highway left residual crystallization that keeps corroding metal even after cleanup. We test for salt residue and apply anti-corrosion treatment on canal-zone jobs as standard practice. Call (361) 326-5060 if your home is in the flood zone or within a mile of the water.
Sealing closes gaps and joints in sound ductwork to stop conditioned air from escaping. Repair fixes damaged metal: rusted-through trunks, crushed returns, corroded boots, or flood-compromised sections that can’t hold a seal. We inspect with a camera and pressure-test before quoting either. Sometimes a Freeport home needs both. We write separate line items so you see exactly what each costs. Call (361) 326-5060 for a free inspection and honest breakdown.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Freeport and the surrounding South Shore communities.