Duct Sealing and Balancing

Duct Sealing and Balancing

Smart Space Atlanta offers both Aeroseal® technology and manual duct sealing solutions—plus system balancing—to eliminate leaks, reduce energy waste, and keep every room comfortable.

Trusted results for over 12 years.

Rebates and Tax Credits Available

^

Diagnostic Testing

^

Financing Options Offered

^

Two Proven Ways to Seal and Balance Your Ducts.

With over 12 years of duct diagnostics experience, we routinely find systems leaking 20-80% of their conditioned air.  Smart Space applies two proven approaches—Aeroseal internal sealing and Manual exterior sealing—to stop air loss into attics, wall cavities, and crawl spaces and restore system performance.

If your crawl space or basement feels cool on a hot day, your ducts are leaking a significant amount of conditioned air. A duct leakage test can verify this, and many systems show 60%+ leakage.

Aeroseal® Internal Sealing

Smart Space often recommends sealing full or partial metal duct systems with Aeroseal, particularly when the ductwork runs through interior walls.

Our technicians seal the entire duct system with our Aeroseal machine which pressurizes the enter duct system, tests in real time, and seals the entire duct system with a sealant.

We then perform comprehensive pre- and post-testing to verify airflow improvements and confirm total leakage reduction.

Best for: Metal or partial metal duct systems

Why Choose AeroSeal

Metal ducts are typically very leaky because they’re often not sealed during the original installation but they offer excellent long-term performance—they are straight, rigid, durable, and resistant to rodents.

Using Aeroseal technology, we pressurize the system and seal it from the inside, closing gaps and leaks that would otherwise be inaccessible. Other benefits include:

  • Meets modern building code standards (≤11% leakage).
  • It is the only solution if your leaky metal ducts run through your walls.
  • Boosts comfort, air quality, and HVAC performance.
  • Reduces strain on your HVAC system.
  • Significantly lowers energy costs.
Our AeroSeal Process

  1. Clean the ducts system with a commercial grade duct cleaning equipment (to optimize the seal).
  2. Preseal with large disconnects manually with mastic.
  3. Block off supply and return registers at the air handler.
  4. Set up specialized AeroSeal equipment: Heater Fan, Computer, Fan Box, Wand, Air Dryer, Compressor, Layflat tubing typically to a return and supply plenum.
  5. Run our computerized sealing program, distributing the AeroSeal solution through the inside of the entire duct network.

Manual Duct Sealing

Smart Space recommends manually duct sealing for a flexible duct system.

Our technicians seal all accessible leaks using a mastic compound applied to every connection—including plenums, Y-splits, and duct boots.

We then perform comprehensive pre- and post-testing to verify airflow improvements and confirm total leakage reduction.

Best for: Flexible duct systems

Why Sealing Matters

 

  • Current energy codes require duct leakage to be under 11% in new homes. Most older systems leak 20-80%.
  • Leaky duct systems pour conditioned air (that you pay for) into crawl spaces, walls, and attics.
  • Unsealed return ducts draw in contaminated air from undesirable places (typically crawl space and attics) contributing to poor indoor air quality.
  • Balancing airflow ensures every room stays comfortable.
  • Results in lower monthly energy bills, comfort, and improved HVAC efficiency.
  • Raise your thermostat on a very cold or hot day and go to your duct system, if your ducts are leaky you will typically feel the leakage.
    Our Duct Sealing & Testing Process

     

    1. Our auditor tests the leakage of the overall system with a duct blaster. The duct blaster tests the overall cubic feet per minute (cfm) of the entire system and can pinpoint the percentage of the overall leakage.
    2. Our auditor also performs a second test on each individual duct run to determine if a duct run is disconnected which we commonly find. Typically it is a duct run laying on the ground, pouring air into a crawl space or attic.
    3. Seal all plenums, Y-splits, and duct boots using mastic and UL-listed foil tape.
    4. Test duct leakage after we have sealed the system again with a Duct Blaster during a post home energy audit and file for duct sealing rebates for you.

    Balancing the Air Flow Between Rooms

    Balancing airflow by installing manual dampers in each supply duct run is a simple yet highly effective method for improving the performance and comfort of your home.

    Why Choose Airflow Balancing with Manual Dampers:

    • Ensures even temperature distribution across rooms.
    • Improves overall comfort and eliminates hot or cold spots.
    • Increases HVAC system efficiency and extends equipment lifespan.
    • Reduces energy waste and utility bills.
    • Provides better control over airflow for customized comfort.

    Our Airflow Balancing Process

    Chiller & Boiler Pipe Insulation

    Step 1

    Inspect the existing duct layout and airflow patterns using precision airflow measurement tools.

    Chiller & Boiler Pipe Insulation

    Step 2

    Identify airflow imbalances and target ducts requiring control adjustments.

    Chiller & Boiler Pipe Insulation

    Step 3

    Install manual balancing dampers in each supply duct run to allow for fine-tuning.

    Chiller & Boiler Pipe Insulation

    Step 4

    Adjust each damper to achieve optimal airflow distribution to all conditioned spaces.

    Chiller & Boiler Pipe Insulation

    Step 5

    Verify and document airflow performance before and after balancing.

    Ready to Improve Your Home’s Comfort and Efficiency?

    Let’s get started with a free estimate or schedule a Discovery Call today.
    We’ll evaluate your duct system and recommend the right solution—manual sealing, AeroSeal, or both—to ensure your home is performing at its best.

    What People Are Saying

    Smart Home Atlanta did an outstanding job with our energy audit, duct sealing, and crawlspace encapsulation. The difference in efficiency, humidity, and air quality has been massive. High-quality work, excellent communication, and very informative throughout the process—highly recommend!

    — Joseph W.
    Posted on Google Google
    Joseph Winslow profile picture
    Joseph Winslow
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    Smart Home Atlanta did an outstanding job with our energy audit, duct sealing, and crawlspace encapsulation. The difference in efficiency, humidity, and air quality has been massive. High-quality work, excellent communication, and very informative throughout the process—highly recommend!
    Posted on Google Google
    Martin Runnström profile picture
    Martin Runnström
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    Had insulation/weatherization done with Smart Spaces Atlanta. Excellent experience overall, from planning to doing the project and seeing great results. Great communication throughout. Team was very good, knowledgeable and were very cognisant of us having little kids and left the house clean after they were done. Highly recommend!
    Posted on Google Google
    S. Mashet Smith profile picture
    S. Mashet Smith
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    This year I opted to have an energy audit done on my home. Smart Space Atlanta was the company I selected to do so. From the first call I appreciated the responsiveness. Harden who was my contact person discussed the findings and made sure that I knew I could complete the upgrades at my convenience. I selected to have both my crawl space and duct repair done by the company within 2 weeks. The team which was overseen by project manager West were always punctual, professional and friendly. The site was left in a tidy manner each day. Now mind you my home is 104 yrs old and the work performed not only made it more energy efficient but visually pleasing as well. My crawl space went from a musty, dark and gloomy space to actually welcoming! Duct repairs means that the main floor will be warm and cozy this winter. I was referred to a plumber to complete my tankless water heater installation through the company as well. I could not be more pleased with the results! They will be my one and only call for attic insulation as next project. Sincere thanks for making my home more efficient for years to come with my family. Continue to display excellent customer service and awesome results for your customers!
    Posted on Google Google
    Marieh Scales profile picture
    Marieh Scales
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    I found Smart Space ATL on the GA Power website and went with them to do an energy assessment because from what I saw I perceived them to be a sort of concierge service where they would do the assessment, the work, and file the paperwork for the rebates. I knew I had an energy issue when I first purchased my home and my first month's energy bill was $300. Fast forward one year, I reach out to Smart Space ATL to conduct an energy assessment. I waited one year to be able to provide them with a year's worth of utilities to properly conduct the energy analysis. I really enjoyed working with Jason. He walked me through the process of what would be done and what to expect. I was able to be scheduled within 3 weeks of calling. They had to connect my air conditioning ducts, clean and seal them. And they also insulated the inside of my home and my attic and added insulation to my attic. Overall enjoyed the experience and everything went as discussed. Would definitely recommend them for an energy assessment and subsequent work to make your space more energy efficient.
    Posted on Google Google
    Jason Dailey profile picture
    Jason Dailey
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    Harden is awesome! She is patient and informative. We had a third party radon short-term and long-term test in 2021. The short-term returned at 27.6 pCi/L and the long-term at 12.1 ± 1.6 pCi/L. These results are horrifying! After some research on mitigation specialists, I decided on Smart Space Atlanta. Within 48 hours after installation of the mitigation system, which was pretty much custom since I requested they conceal the system running it through my floors and ceiling versus outside alongside my house, my radon average was 0.3. Fast forward to two years later, I tested two separate areas of the basement with short-term test conducted by Alpha Energy Labs. The room furthest away from the mitigation system returned at Less than 0.9 pCi/L and the main area of the returned at less than 0.7 pCi/L. These are pretty amazing results! My kids and their friends play down in the basement regularly. I have peace of mind that there are no radon exposures concerns. Thank you Harden and Smart Space Atlanta! Jason
    Posted on Google Google
    Seth Eden profile picture
    Seth Eden
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    My wife and I found Smart Space Atlanta when looking for a home inspection energy audit to improve our home's energy efficiency as well as make use of state and federal incentives. From the first communication we felt confident in their knowledge, communication, and results. In addition to providing us with a great breakdown of our home's specific deficiencies they also provided us with an exhaustive list of small things we could do ourselves to improve our home as well as lining up bigger projects that would have an impact on the quality of air in our home, our home's insulation, and efficiency. They were great at working with a delayed timeframe on our end and ultimately, we had them clean and seal our ducts to great results. Our a/c can finally keep up with the warmer months and more effectively keep it at our set temperature, a major issue for our home was our ac ducts leaking heavily into our crawlspace and thus the cool air not getting much into the actual house. We have yet to see what the energy savings will be as that will require time, but we are more than happy with the quality of life improvements we are already enjoying. They also have handled the rebates with GA Power and provided appropriate invoices and documentation for us to use for federal taxes next year. We are very happy with Harden and her entire team and plan on using them in the future for additional home energy improvements.
    Posted on Google Google
    Eric Stagliano profile picture
    Eric Stagliano
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    Smart Space is an amazingly competent company. I have used them for two different projects on my home. Each time, I was overwhelmed with their "extra mile" professionalism. Harden is incredibly honest and always seeks the best solution for any work that is being done. In one recent example (that just blows my mind), I agreed to have them do an extensive renovation project. We were about to start the project when Harden discovered a structural flaw in our A/C system and recommended that we hold off on her already scheduled work until the other problem was fixed. It is this kind of honesty that keeps me coming back. I will use them for all future projects in my home. I highly recommend them.
    Posted on Google Google
    Tom Viilo profile picture
    Tom Viilo
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    We had a great experience working with Harden and Ross on new windows for our whole home. They are not pushy, timely, and stand behind their window selection for customers.
    Posted on Google Google
    Aidan Hall profile picture
    Aidan Hall
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    Harden was great and Smart Space was easy to work with. Their crews were timely and respectful. They helped us lower our radon levels significantly and also improve the energy efficiency of our home. We were able to qualify for Georgia Power rebates and they do the paperwork. Highly recommend.
    Verified by Trustindex
    Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

    Partners & Certifications

    Ashrae

    Smart Insights

    Smart Insights is where Smart Space shares in-depth guides on home performance, building science, and HVAC efficiency—helping you understand what really makes a home comfortable and energy-smart.