Right Away Heating and Air Right Away Heating and Air Seals It Tight
New attic install with freshly hung, insulated flex duct.
Duct Sealing Near You That Stops Leaky Joints, Boots, Plenums and Returns From Wasting Cooled Air and Pulling In Damp Air
Right Away Heating and Air Seals It Tight
Updated November 2026
Right Away Heating and Air handles duct sealing near you for ducts that are still in good shape but leak at the joints. We seal with mastic, which lasts far longer than tape, and we pay extra attention to return ducts, because return leaks pull in hot, dusty or damp air.
We provide duct sealing in Ladson, SC and across the Charleston area from one local shop.
Duct sealing typically runs $600-$1,600+, depending on how much ductwork you have and how easy it is to reach. If the ducts are torn, rusted or crushed, we'll recommend repair or replacement instead. Call 843-996-8904.
- American Standard Customer Care Dealer
- SC License CLM.119013
- 20+ Years Lowcountry HVAC
- Duct Inspections
- $50 Off Any Repair
Editor view: the real Duda form sits in its own block and moves here on Preview and the live site.
$50 off any repair is applied to your ticket automatically.
Ladson, SC 29456
Where Ducts Leak in Lowcountry Homes
Joints, Boots, Returns
Ducts in Lowcountry homes leak most at the plenum connections, the boots where ducts meet ceiling vents, the joints between sections and the return box under the air handler.
| Leak Spot | What It Does |
|---|---|
| Supply plenum connections | Dumps cooled air into the attic |
| Ceiling and floor boots | Leaks air around vents |
| Flex duct joints | Leaks along every run |
| Return box under the air handler | Pulls in attic, garage or crawl space air |
| Panned returns in walls or floors | Pulls in dust and damp air |
Why Are Return Duct Leaks So Bad?
Return duct leaks are worse than supply leaks because they pull unconditioned air into the system. In the Lowcountry, that means hot attic air, garage fumes or damp crawl space air.
- Hot attic air raises the load on your AC.
- Damp crawl space air raises indoor humidity and musty smells.
- Garage leaks can pull in fumes and dust.
Joints, Boots, Returns Written prices, $50 off any repair and free second opinions.
Mastic vs Duct Tape for Sealing Ducts
Mastic Lasts Longer
Mastic is the right way to seal ducts. Common cloth duct tape dries out and peels in hot attics, often within a few years.
| Sealing Method | Holds Up in Attic Heat? | Notes |
|---|---|---|
| Cloth duct tape | No, dries and peels | Not meant for ducts |
| UL-listed foil tape | Fairly well | Good on clean metal |
| Mastic | Yes | Flexible, long-lasting seal |
| Mastic with mesh tape | Yes | Best for larger gaps |
Mastic Lasts Longer Written prices, $50 off any repair and free second opinions.
How Much Does Duct Sealing Cost Near You?
Most Run $600-$1,600+
Duct sealing near you typically costs $600-$1,600+. Bigger duct systems, tight attics and crawl spaces push the price toward the high end.
| Duct Sealing Job | Typical Lowcountry Price Range |
|---|---|
| Duct inspection | Included with service call |
| Seal returns and plenums only | $600-$900+ |
| Seal the full duct system | $900-$1,600+ |
| Seal plus insulation repair | Priced in writing |
Prices are typical Lowcountry ranges for planning. Your written estimate is the final word.
Is Duct Sealing Worth It?
Duct sealing is worth it when your ducts are structurally sound but leaky. It usually improves comfort, airflow and humidity, and lowers bills.
- Sealed ducts deliver more air to each room.
- The AC runs shorter cycles to reach the setting.
- Less dust and damp air gets pulled in.
Most Run $600-$1,600+ Written prices, $50 off any repair and free second opinions.
When Ducts Need Replacement Instead of Sealing
Some Ducts Are Done
Ducts need replacement instead of sealing when they're crushed, torn, rusted through, moldy or badly undersized. Sealing a failing duct only buys a little time.
| Duct Condition | Seal | Replace |
|---|---|---|
| Sound ducts, leaky joints | Yes | No |
| A few crushed or torn runs | Seal the rest | Replace those runs |
| Rusted through or moldy | No | Yes |
| Badly undersized for the system | No | Yes |
Some Ducts Are Done Written prices, $50 off any repair and free second opinions.
Duct Sealing Specials and Comfort Club Savings
Ways to Save
Duct sealing from Right Away Heating and Air qualifies for our specials, and Comfort Club members get a duct check at every tune-up.
| Offer | What You Get |
|---|---|
| $50 Off Any HVAC Repair | Applies to qualifying duct repairs |
| Comfort Club | Duct checks at tune-ups, 10% off repairs |
Restrictions apply.
Where Right Away Heating and Air Provides Duct sealing
Close to Home
When you book duct sealing, the tech who comes out starts the day at our Ladson shop on William Aiken Avenue, central to all three counties we serve.
Right Away Heating and Air in Ladson, SC
Right Away Heating and Air in Ladson, SC is where owner Blake Miller runs the shop, and where every duct sealing van restocks between calls.
Communities Where We Provide Duct sealing
| County | Towns |
|---|---|
| Dorchester | Summerville |
| Berkeley | Goose Creek, Hanahan, Moncks Corner, Daniel Island |
| Charleston | North Charleston, West Ashley, Mount Pleasant, James Island, Johns Island, Sullivan's Island, Isle of Palms, Kiawah Island, Seabrook Island, Edisto Island, Awendaw, Hollywood, Ravenel, Meggett, Yonges Island |
Close to Home Written prices, $50 off any repair and free second opinions.
Frequently Asked Questions About Duct Sealing Near You
Quick Answers
How Long Does Duct Sealing Last?
Mastic seals usually last as long as the ducts themselves.
How Long Does Duct Sealing Take?
Most homes take half a day to a day.
Will Duct Sealing Lower My Bill?
Usually, because more of your cooled air reaches the rooms.
Can Duct Sealing Help Humidity?
Yes, especially when return ducts were pulling in damp air.
Do You Offer Duct Cleaning?
No. We repair, seal and replace ducts.
Do You Seal Crawl Space Ducts?
Yes.
Reviewed by Blake Miller, Owner, Right Away Heating and Air
Book Duct Sealing Near You With Right Away Heating and Air
Seal It Tight
Right Away Heating and Air will inspect your ducts and seal the leaks. Call 843-996-8904.
9565 William Aiken Ave, Suite 104, Ladson, SC 29456
