Duct Sealing in Northern Virginia

Gaps at duct joints, seams, and connections quietly waste the air your system just spent energy heating or cooling — pushing it straight into your attic or crawlspace instead of your living room. Golden Arrow Service tests your ductwork first, then seals what’s actually leaking, rather than sealing on assumption. We also handle insulation services for homes where duct leaks and thin attic insulation are working against each other at the same time.Call (703) 782-5028 to schedule a duct inspection.

Family-owned in Vienna since 1999 · Licensed & insured · 10,000+ Northern Virginia homeowners served · Rated 5.0 on Google

Signs Your Ductwork Is Leaking

Leaking ductwork doesn’t always announce itself with a visible gap — most of the time it shows up as a pattern you’d notice comparing rooms or bills:

One room stays noticeably warmer or colder than the rest of the house, even with the thermostat set the same for everyone.
Energy bills climb without an obvious reason — no new equipment, no change in how you use the system, just a bill that’s higher than a system of that size should produce.
Dust builds up near vents faster than it used to, since a leak can pull dusty attic or crawlspace air back into the system.

Heavier dust alone, without the temperature or bill pattern, can also point to ducts that need cleaning rather than sealing — a technician can tell the difference during an inspection instead of guessing which one you need. and more tips

How Golden Arrow Seals Your Ducts

Leaking ductwork doesn’t always announce itself with a visible gap — most of the time it shows up as a pattern you’d notice comparing rooms or bills:

One room stays noticeably warmer or colder than the rest of the house, even with the thermostat set the same for everyone.
Energy bills climb without an obvious reason — no new equipment, no change in how you use the system, just a bill that’s higher than a system of that size should produce.
Dust builds up near vents faster than it used to, since a leak can pull dusty attic or crawlspace air back into the system.

Why Northern Virginia Homeowners Trust Golden Arrow for Duct Sealing

Duct sealing done right depends on the technician actually finding the leaks, not guessing where they might be — that’s the standard we hold every visit to:

Family-owned and independently operated in Vienna since 1999, licensed and insured, and rated 5.0 on Google by 10,000+ Northern Virginia homeowners served.
We test before we seal, and explain what we find — no proprietary system sold as the only real fix, just mastic sealant and code-approved tape applied where the pressure test actually shows a leak.
The same technician handles inspection and sealing — no hand-off between whoever diagnoses the problem and whoever does the work.

Duct Sealing or Duct Repair: Which One You Need

Both fix a leaky duct system, but they’re not the same job. Duct sealing addresses smaller leaks and gaps at joints and seams — air escaping where sections connect. Duct repair covers larger physical damage: disconnected sections, torn or crushed ductwork, or runs damaged by pests or age. In practice, the two often get assessed together, since a system that needs one sometimes needs both — a pressure test during a sealing inspection will show whether a duct run has damage beyond what sealant and tape can fix.

If you’re not sure which one describes your situation, that’s normal — tell us what you’re noticing when you call, and we’ll confirm it during the inspection rather than have you guess beforehand.

What Affects the Cost of Duct Sealing

There’s no single number for duct sealing, since the job itself varies with the house:

How many leaks there are, and how accessible they are — joints in an open attic take less time to reach and seal than ones buried behind finished ceilings or tight crawlspace clearances.
The size of your ductwork system — a larger home means more duct runs to inspect and, potentially, more joints that need sealing.
What the pressure test finds — a system with a handful of minor leaks is a different job than one with leaks throughout.

We test first and give you a clear, written estimate before any sealing starts — no guessing, and no work added to the job without you agreeing to it first. Prefer to talk through your situation before scheduling a visit? Contact us and we’ll walk you through what to expect.

Is Duct Sealing Worth It

For most homes, it depends less on the house’s age and more on where the ductwork actually runs. If your ducts run through an attic or crawlspace — common throughout older Northern Virginia homes — every leak there is conditioned air paid for and then lost before it reaches a single room. That’s a different situation than a newer home with ductwork entirely inside conditioned space, where the same leak has less impact.

Sealing on its own won’t fix every comfort or efficiency issue — a system that’s also overdue for a tune-up or running with a dirty filter can still perform poorly even with perfectly sealed ducts. The honest answer is that sealing is one part of a working system, not a standalone fix, which is why we test before recommending it rather than selling it as the answer to every symptom.

SERVICE COVERAGE

Duct Sealing Across Vienna, McLean, Fairfax & Northern Virginia

Alexandria, VA

Annandale, VA

Arlington, VA

Ashburn, VA

Bristow, VA

Burke, VA

Centreville, VA

Chantilly, VA

Clifton, VA

Dulles, VA

Dunn Loring, VA

Fairfax Station, VA

Fairfax, VA

Falls Church, VA

Fort Belvoir, VA

Fort Myer, VA

Gainesville, VA

Great Falls, VA

Greenway, VA

Herndon, VA

Langley, VA

Lorton, VA

Manassas, VA

McLean, VA

Merrifield, VA

Newington, VA

Oakton, VA

Occoquan, VA

Reston, VA

Sterling, VA

Vienna, VA

West Mclean, VA

Get Your Ducts Tested and Sealed

Uneven rooms, climbing bills, or dusty vents — a pressure test tells you exactly where the leaks are before anything gets sealed. Call (703) 782-5028, or contact us online to schedule an inspection

Related services: a crushed or disconnected run needs more than sealant — see Duct Repair for physical damage, and once ducts are sealed, adding Insulation Services in the attic keeps the conditioned air you just stopped losing.

Duct Sealing FAQs

Does duct sealing actually work?

Yes, when the leaks are real and confirmed by a pressure test — sealing stops conditioned air from escaping at those specific points. It's not a fix for problems the ductwork doesn't actually have, which is why we test first instead of sealing on assumption.

Will duct sealing lower my energy bills?

It can, especially in homes where ductwork runs through an unconditioned attic or crawlspace — every sealed leak is air your system doesn't have to make up for. Pairing it with regular AC and heating maintenance gets you the fuller efficiency picture, since a leaky duct and a neglected system compound each other.

Do you use Aeroseal to seal ducts?

No — we use mastic sealant and code-approved metal tape, applied by hand at each confirmed leak point. It's a proven, straightforward method, not a proprietary branded process.

Can I seal my own ducts with duct tape?

The cloth-backed duct tape sold for household use dries out and fails within a few years in HVAC applications, so it's not a lasting fix even for a leak you can see. Professional sealing also depends on a pressure test to find leaks you can't see, which isn't something to DIY.

How long does duct sealing take?

It depends on how many leaks the pressure test finds and how accessible your ductwork is — a few minor leaks in an open attic goes faster than leaks spread across hard-to-reach runs. We give you a specific estimate after the inspection, not a generic guess.

Will sealing my ducts make my house less dusty?

It can help — sealed joints mean less dusty attic or crawlspace air getting pulled into your system and blown back into your rooms. It won't eliminate dust from other sources in your home, so it's one factor among several, not a full fix on its own.

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