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 Arbutus
We serve Arbutus from our Baltimore office, and our crews know the area well enough to find your street without directions. Most calls we get from Arbutus are about the same thing: a cape or ranch built in the 1950s or 60s that never heats or cools evenly, with energy bills that keep climbing and rooms that stay stubbornly off-temperature. That’s usually not a furnace problem. It’s the ductwork. Call us at (361) 326-5060 and we’ll send a technician who understands what 70-year-old galvanized steel looks like when it’s finally given up.
Why Hollis Air Duct Cleaning Is Arbutus’s Preferred Duct Sealing Company
We’ve been working in Arbutus long enough to recognize the house you’re describing before we pull up. The post-war capes near Relay, the brick ranches off Southwestern Boulevard, the rowhouses closer to Halethorpe – our Duct Sealing team has sealed and repaired ductwork in all of them. Homeowners here don’t call us because we have the biggest ad. They call because their neighbor told them we showed up in the window, priced the job in writing, and fixed what three other companies couldn’t diagnose.
Our technicians are background-checked, uniformed, and expected to operate by The Garrison Code: arrive inside the quoted window, price in writing before touching anything, complete the job by the book, and leave the site clean. Every repair we make in Arbutus carries our 365-Day Done Right Promise. If the work fails within a year, we return and make it right at no charge, including a free second visit. No negotiation, no runaround. Phones are answered by a live person 24 hours a day, 7 days a week – not a voicemail loop, not a callback queue.
HVAC Duct Sealing in Arbutus
HVAC Duct Sealing in Arbutus is almost never about chasing down a single obvious leak. In this market, it’s about reconnecting and tightening original galvanized steel trunk runs that were installed for gravity furnaces in the 1940s through 1970s, then adapted piecemeal when forced-air systems arrived decades later. Those slip joints separate over time. The static pressure your modern blower is designed for never builds. Air bleeds into uninsulated crawlspaces and attics, and the rooms farthest from the air handler get whatever’s left – usually not enough.
A typical HVAC duct sealing job in Arbutus runs $450 – $950 for a whole-system seal on a standard cape or ranch. Larger homes with complex trunk-and-branch layouts, or homes requiring significant disassembly to access crawlspace runs, can run $1,100 – $1,800. We price by the system, not by the vent. The written quote you receive before we start is the price you pay.
What We Seal and How
We use duct sealing mastic and reinforced mesh on galvanized joints and seams – not tape, which dries and fails in Arbutus’s humidity. For disconnected branch runs, we reconnect and support properly. Our equipment includes Rotobrush rotary systems and Nikro negative-air machines for pre-seal cleaning when ducts are contaminated. The mastic stays flexible, seals permanently, and handles the temperature swings your attic and crawlspace see.
When Sealing Becomes Repair
Sometimes we open a crawlspace and find a branch run crushed by a foundation repair, chewed through by pests, or corroded through from decades of condensation. Sealing over that is pointless. We’ll show you the camera footage, explain what needs replacing versus what can be sealed, and write a price for each option. No package deals, no pressure.
Duct Repair in Arbutus
Duct Repair in Arbutus often starts with a homeowner complaint that sounds like a equipment problem: “The furnace runs constantly but the bedroom is still cold.” We hear this weekly from the Halethorpe and Relay sections. The furnace is fine. A crushed or disconnected branch run in an uninsulated crawlspace is bleeding conditioned air into the dirt, or not delivering it at all.
Typical duct repair in Arbutus runs $350 – $750 for branch run replacement or reconnection. Major trunk line repair or partial replacement in a crawlspace or attic runs $800 – $1,500. Full trunk replacement is rare but can reach $2,000 – $3,500 in larger homes with extensive galvanized systems. Again: written price before work starts, flat price per system, no per-vent add-ons.
Common Damage We Find
Remodeling in tight Arbutus lots often crushes overhead runs. Foundation work disturbs crawlspace branches. We’ve found ducts completely disconnected at the trunk, blowing heated air into a crawlspace for years while the homeowner ran space heaters upstairs. Our camera inspection finds it in minutes, and we show you before we quote.
Moisture and Mold Precautions
Arbutus’s proximity to the Patapsco River valley means higher humidity than inland suburbs, and summer storms push moisture through foundation vents into crawlspaces. We won’t seal over wet or moldy duct surfaces – that traps the problem. If we find active mold, we’ll recommend cleaning and drying first, then seal. It’s slower. It’s the right way.
Trusted Brands We Service in Arbutus
Our trucks carry professional-grade equipment, not hardware-store gear. We run Rotobrush rotary brush systems for mechanical cleaning, Nikro negative-air machines for contained debris removal, and stock filtration products from Honeywell and Guardsman for Arbutus homeowners who want cleaner air moving through newly sealed ducts. Parts and filters for common Arbutus systems are on the truck, so most jobs don’t wait on a supply run. If your system needs an Aprilaire media upgrade or a Honeywell electronic air cleaner after sealing, we install what we stock and guarantee it under the same 365-Day Done Right Promise.
Common Duct Sealing Problems We See in Arbutus Homes
- Original slip joints on galvanized trunks have separated after 70 years. The gravity-furnace-era ductwork in most Arbutus capes and ranches was never designed for the static pressure of a modern forced-air blower. Joints open, air escapes into crawlspaces, and rooms at the end of the run go cold.
- Humid summer air enters through foundation vents and corrodes metal from the outside. Arbutus’s wooded Patapsco valley location means crawlspaces stay damp. Uninsulated steel ducts sweat, rust at the seams, and eventually leak or fail entirely. Sealing rusty metal is temporary; we identify what’s salvageable and what needs replacement.
- Branch runs crushed during later remodeling or foundation repair. These tight lots don’t give contractors room to work overhead. We’ve found 6-inch branches flattened to 2-inch ovals, completely blocking airflow to second-floor bedrooms. The homeowner thought they needed a bigger furnace.
- Disconnected ducts blow conditioned air into attics or crawlspaces for years. Sometimes the original installer never properly supported a branch. Sometimes pest activity or settling pulls it free. The system runs longer, bills climb, and nobody thinks to look in the crawlspace until we run the camera.
Pricing for Duct Sealing in Arbutus, MD
Here’s what duct sealing actually costs in the Arbutus market, based on the homes we work in:
| Service | Typical Range |
|---|---|
| Whole-system duct sealing, standard cape/ranch | $450 – $950 |
| Complex system or limited crawlspace access | $1,100 – $1,800 |
| Branch run repair/reconnection | $350 – $750 |
| Major trunk repair or partial replacement | $800 – $1,500 |
| Full trunk replacement (rare) | $2,000 – $3,500 |
What moves you within these ranges: how much of the system is accessible, whether we need to clean before sealing, and whether we find damage that requires repair before sealing makes sense. We do not quote per-vent. We do not bait with a low number and add charges at the door. The price is written down before any work starts, and it does not move. Call (361) 326-5060 for a free estimate – we’ll inspect, explain what we found, and give you a flat price for the whole system.
We Also Serve Cities Near Arbutus
Our Baltimore office dispatches crews throughout the metro area. We regularly do Duct Sealing in Arbutus and also serve Baltimore, Columbia, Ellicott City, and Glen Burnie. Same equipment, same written pricing, same 365-Day Done Right Promise in every town.
Serving Arbutus, MD - Our Local Coverage Area
We’re based in the Arbutus 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 Arbutus
Most original galvanized steel ductwork in Arbutus can be sealed if the metal is structurally sound. We check for rust-through, crushed sections, and separated slip joints during our camera inspection. If the trunk is intact, we clean the joints, apply mastic and mesh, and reconnect any loose branches. Replacement only becomes necessary when sections are corroded through or crushed beyond repair. Call (361) 326-5060 and we’ll inspect before quoting either option.
Arbutus’s location near the Patapsco River valley means higher ambient humidity, and summer storms push moisture through crawlspace foundation vents or small roof leaks into uninsulated duct runs. That moisture feeds mold and mildew on dust inside the ducts. Sealing over wet ducts traps the odor and the mold. We inspect for moisture intrusion first, recommend cleaning and drying if needed, then seal. The fix lasts longer that way.
Yes – especially on small ranches, where one or two leaking joints can starve an entire room. In Arbutus’s 1950s ranches, we often find that 20 – 30% of conditioned air is bleeding into the crawlspace through separated slip joints. Sealing those joints restores airflow to the rooms that need it, reduces furnace run time, and often pays back in lower bills within two heating seasons. We measure airflow before and after so you see the difference.
We run a camera inspection through the full system and use a pressure pan test at each supply register to measure airflow against design specs. In Arbutus crawlspaces, we also look for disconnected branches, crushed runs, and rust at joints. You see the footage. We mark every leak, explain what’s causing it, and write a price to fix what we found. No guesswork, no sealing blind.
We seal and repair HVAC ductwork. Dryer vent cleaning is a separate service we offer, but the materials and methods differ – dryer vents use smooth metal pipe and specific termination fittings, not mastic-sealed galvanized steel. If your dryer vent needs attention, we can address it during the same visit but price it as a separate system. Call (361) 326-5060 and we’ll scope both while we’re there.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Arbutus and the Baltimore metro area since 2004.