A duct system can be perfectly sized and free of major damage and still leak away a big share of the air you pay to heat and cool, all through gaps at the joints and connections. Those small leaks add up fast, sending conditioned air into attics and crawlspaces while your comfort and your budget both take the hit. Rooms that never balance, a system that runs constantly, and rising energy bills are the everyday result. Calderon HVAC and Plumbing Inc provides duct sealing across Asheboro, NC, and surrounding towns like Ramseur, Seagrove, and Staley, closing those leaks for good.
Based in Asheboro, North Carolina, Calderon HVAC and Plumbing Inc provides heating, cooling, and plumbing services to residential, commercial, and industrial clients throughout the Piedmont Triad and central part of the state, with over 15 years in the trades behind the work. Sealing leaky ductwork is a specialty of our team, focused on closing the gaps at joints and connections with mastic that holds for decades rather than tape that fails in a few years. We give special attention to return-side leaks, since sealing those often improves how a home feels and smells as much as it improves efficiency.
Duct leaks are sneaky because the ductwork itself may look intact. Air escapes not through obvious holes but through the countless small gaps where sections join, where tape has dried and pulled away, and where connections were never sealed tightly in the first place. The signs show up in your comfort and your bills rather than anywhere you can point to, with certain rooms never reaching temperature, a system that runs and runs, and utility costs higher than they should be. Plenty of homeowners chase new equipment when leaky ducts are the actual culprit.
The gaps develop for predictable reasons. Ordinary duct tape, despite the name, dries out and lets go within a few years, opening the joints it was meant to hold. Many systems were never properly sealed at installation, relying on friction fits that loosen over time. Vibration from the system running gradually works connections apart, and older ductwork simply accumulates gaps as it ages. Return-side leaks deserve their own mention, since a leaky return pulls unfiltered air straight from an attic or crawlspace and circulates it through the whole house.
Sealing it properly means finding the leaks and closing them with the right material. Our technicians inspect the duct runs, identify where air is escaping on both the supply and return sides, and seal the joints and connections with mastic, which stays flexible and holds for decades rather than drying out like tape. The return side gets particular attention, since sealing those leaks stops musty, unfiltered air from entering the system in the first place. Duct sealing is frequently the best value in ductwork, delivering a real comfort and efficiency gain for a fraction of what larger work costs.
The result is conditioned air staying inside the ducts where it belongs, reaching the rooms it was meant to reach. Sealing leaks often trims enough energy waste to show up on the next utility bill, and evening out the airflow settles the rooms that never quite balanced. Closing return-side leaks also cuts down the dust and musty odors pulled in from unconditioned spaces, which improves indoor air quality along the way. Every sealing job our team performs carries a one-year workmanship warranty behind the labor.
Closing duct leaks delivers some of the best value in ductwork, and here is what our duct sealing provides.
Our duct sealing often delivers the biggest comfort and efficiency gain for the least money of any ductwork service. Closing gaps at the joints costs a fraction of larger repairs or replacement. That value is why sealing is frequently the first thing we recommend.
Sealed ducts keep conditioned air inside the system instead of leaking it into attics and crawlspaces. That reduction in waste frequently shows up on the very next utility bill. Your system stops running overtime to cover losses it cannot beat.
Leaks rob the far rooms of the air they need, so closing those gaps helps balance the whole house. Airflow reaches where it was meant to reach. Rooms that never quite settled often even out after sealing.
Return-side leaks pull unfiltered, musty air from unconditioned spaces into the system, and sealing them stops that at the source. Less dust and fewer odors circulate through the home. The air quality benefit comes right along with the efficiency gain.
We seal with mastic rather than duct tape, which dries out and fails within a few years. That choice keeps the seal tight for the long haul. Doing it right means the leaks stay closed rather than reopening next season.
Sealing is one part of the ductwork care our team provides, and these related pages cover the rest of keeping your air moving efficiently.
Our ductwork services page ties together the full range of our duct work, from sealing to repair, installation, and airflow balancing. It lays out how our team keeps air moving properly for homes and businesses across the region. Start there for the complete overview of our duct services.
When ductwork has broken or disconnected runs rather than just leaky joints, our air duct repair service fixes the damage. That page fits homes with crushed, torn, or disconnected sections. Sealing and repair often work hand in hand to restore a system fully.
When sealing and repair are not enough and the ductwork has aged out, our air duct installation and replacement service designs and installs a new system. That page fits homes with widespread damage or ductwork wrong from the start. A new system gets sealed tight from day one.
Duct sealing is only as good as the material and the thoroughness behind it, and here is what our team brings.
Many companies focus only on supply leaks, but our team gives the return side equal attention since those leaks pull musty, unfiltered air into the whole house. Sealing both sides delivers the full benefit. That thoroughness is what sets our work apart.
More than 15 years working on ductwork across this area trains an eye for where leaks actually hide, from failed tape joints to loose connections deep in the crawlspace. That experience means we find the gaps others miss. Treating each home like a neighbor's matters to us just as much.
We use mastic that holds for decades rather than the tape that caused many of these leaks in the first place. Doing it right the first time is the whole point. You get a seal built to last, not a quick fix that reopens.
Working right out of Asheboro, our team stays reachable to the neighbors we serve throughout the region. Help is close by whenever you need it. Building lasting relationships is what this business is about for us.
Every inspection and estimate comes at no cost, and we tell you honestly what sealing will and will not fix. Nobody here will push you toward work you do not need. Plain pricing up front keeps the whole job easy to follow.
Leaky ductwork can lose a meaningful share of the air your system produces, especially where runs travel through hot attics or damp crawlspaces. That lost air is conditioned air you already paid for, escaping before it reaches any room. Sealing the leaks keeps that air inside the system where it belongs.
For most homes, yes. Closing the gaps at joints and connections stops the system from leaking conditioned air into unconditioned spaces, so it runs less to keep the house comfortable. Many homeowners notice the difference on the very next utility bill, particularly through our hot summers and cold snaps.
Sealing closes the small gaps at joints and connections where air leaks out, while repair fixes broken, crushed, or disconnected runs. A system can need one, the other, or both. We inspect and tell you which your ductwork actually calls for rather than assuming.
Ordinary duct tape dries out and pulls away from joints within a few years, which is why it caused many of the leaks we find. Mastic, by contrast, stays pliable and keeps its grip for decades. Using it means the seal lasts rather than reopening and sending you back to square one.
Yes, especially when it addresses return-side leaks. A leaky return pulls unfiltered, often musty air from attics and crawlspaces and circulates it through the house. Sealing those leaks stops that air at the source, cutting down the dust and odors moving through your home.
FAQs reviewed by Filiberto Calderon, owner of Calderon HVAC and Plumbing Inc, an experienced and local HVAC contractor.
Let Calderon HVAC and Plumbing Inc close the leaks quietly draining your comfort and your budget. Reach out for a free ductwork inspection, and we will seal your system tight for the long haul.
Business Name: Calderon HVAC and Plumbing Inc
Address: Asheboro, NC, 27203
Phone: 336-964-3611
Business Hours: 24/7
24 Hour Emergency Service Available
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One-year workmanship warranty