What is duct sealing?

Duct sealing applies airtight sealant to ductwork joints, leaks, and connection points. Mastic and aeroseal are common methods. Sealing prevents conditioned air from escaping into unconditioned spaces like attics.

How much energy can sealed ducts save?

Unsealed ducts may lose 20-30% of conditioned air. Sealing can recover much of that loss, reducing energy consumption. Savings are higher in homes with significant leakage and longer heating/cooling seasons.

Is aeroseal or mastic better?

Both work well. Mastic is applied manually to accessible areas. Aeroseal uses pressurized particles to seal leaks throughout the entire system, including inaccessible sections. Each has advantages depending on ductwork layout.

How long does duct sealing last?

Well-sealed ducts remain airtight for many years. Mastic and aeroseal products are long-lasting. Periodic inspection ensures ongoing performance.

Can I seal ducts myself?

DIY duct tape or temporary fixes are not effective long-term. Professional sealing with proper materials and technique delivers lasting results and measurable efficiency gains.

Duct Sealing Marietta, GA | Improve Efficiency & Comfort

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Duct Sealing in Marietta, GA

One Hour Heating & Air Conditioning® of North Atlanta

Unsealed ductwork allows conditioned air to escape into attics, crawl spaces, and walls. Marietta's rapid community growth brings new construction alongside existing homes. Both require duct sealing to prevent energy loss and maintain comfort.

New Construction Duct Sealing

Growth in East Cobb and surrounding suburbs means new homes being built continuously. Duct sealing during or after installation prevents leaks before they start. Mastic sealant applied to joints and connections creates airtight seals. New construction benefits from complete sealing before drywall closes, ensuring long-term efficiency from day one.

Existing Home Sealing in Established Communities

Existing homes throughout Marietta, Roswell, and Smyrna often develop small leaks over years of settling and temperature changes. Professional duct sealing targets visible leaks in accessible areas, major joints, and connection points. Post-sealing efficiency gains are measurable, especially in older homes where deterioration has caused significant air loss.

Efficiency Gains and Comfort Improvement

Sealed ducts deliver more conditioned air to living spaces, reducing room temperature swings and hot/cold spots. Systems run shorter cycles when air doesn't escape. Marietta's intense summer heat and occasional winter cold mean sealed ducts keep interiors more stable and comfortable year-round while reducing strain on equipment.

About Marietta

Marietta experiences steady community growth and new development, particularly in East Cobb and the surrounding suburbs of Kennesaw and Smyrna. This expansion brings a mix of new construction and well-established neighborhoods. Historic areas like the Marietta Square contrast with modern subdivisions. The housing market's diversity means ductwork ranges from brand-new installations to decades-old systems.

Serving Marietta and Surrounding Areas

Duct sealing is available throughout Marietta, Kennesaw, Smyrna, Roswell, Vinings, Acworth, East Cobb, West Cobb, and the full Cobb County service area.

Call (404) 689-4168 to schedule service.

Visit our office:

One Hour Heating & Air Conditioning
1360 Union Hill Rd Ste 5F, Alpharetta, GA 30004
(404) 689-4168
Open 24 hours

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We had an unexpectedly stressful situation where we needed to replace our HVAC system, and One Hour Heating & Cooling was one of several companies we contacted for an estimate. From the very beginning, Rob, the owner, stood out. He was incredibly down-to-earth, honest, and took the time to explain everything to us in detail without making us feel pressured. After meeting with several companies, Rob was by far our favorite, and we felt very comfortable choosing his team for the job. It truly felt like we were becoming part of a family rather than just being another number at a large company, and that made a huge difference to us. The installation team was just as impressive. They were professional, respectful, clean, and truly top-class guys. They did an excellent job and left everything neat and tidy. We’re really looking forward to working with Rob and his team going forward. It’s refreshing to find a company you can genuinely trust, and we’re very happy to recommend One Hour Heating & Cooling to our friends and family! Thank you, Rob and team, for making an unexpected and stressful situation so much easier!

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Zo was fantastic! He came to my home to diagnose an issue with my AC and immediately impressed me with his knowledge, professionalism and decades of experience. He arrived prepared with the right tools, took the time to explain what was happening and helped me understand the different options available. Most importantly, he genuinely cared about finding the right solution for both my needs and my budget rather than simply pushing the most expensive option. I really appreciated his honesty, expertise and willingness to help and I would highly recommend Zo from One Hour Heating & Cooling to anyone in need of HVAC service!

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