If you’re looking for professional duct services in Ashburn, VA, our team at Keys Duct Cleaning will take care of the issues affecting your airflow and indoor comfort. Your duct system plays a major role in how your home feels, and even small problems can impact performance. With the right combination of air duct services, you can keep everything running smoothly and efficiently.
Aeroseal is an advanced duct-sealing technology that seals air leaks within HVAC duct systems from the inside out. Using a safe, non-toxic sealant, the process targets gaps, cracks, and leaks that allow conditioned air to escape before it reaches its intended destination.
Over time, duct leakage can significantly impact the performance of any HVAC system. When air escapes through leaks, heating and cooling equipment must work harder to maintain desired temperatures, resulting in reduced efficiency, increased energy consumption, uneven airflow, and unnecessary wear on equipment.
Aeroseal helps address these issues by sealing leaks that are often difficult or impossible to access using traditional methods. The result is a tighter, more efficient duct system that delivers conditioned air where it is needed most.
Benefits of Aeroseal
Whether for a home, office, retail space, healthcare facility, educational institution, or other commercial building, Aeroseal helps maximize HVAC performance by reducing duct leakage and improving the overall effectiveness of the air distribution system.
Step 1: Preparation & System Setup
Before sealing begins, all supply and return registers are temporarily blocked to properly pressurize the duct system. Critical HVAC components, including the furnace, evaporator coil, smoke detectors, and other sensitive sensors, are carefully protected to prevent any contact with the sealant. This preparation ensures a safe, controlled, and effective sealing process.
Step 2: Connect the Aeroseal Equipment
To access the duct system, our technicians create a small 10-12 inch access opening in the ductwork near the air handler. The Aeroseal equipment is then connected to the duct system using specialized lay-flat tubing.
Before sealing begins, a comprehensive diagnostic test is performed to measure the current level of duct leakage. These baseline results are recorded and later compared to post-sealing measurements to verify the effectiveness of the process and determine the expected sealing time.
Step 3: Seal the Ductwork from the Inside
Once testing is complete, the Aeroseal process begins. A safe, non-toxic sealant is atomized and injected directly into the duct system. As the sealant travels through the pressurized ductwork, it remains airborne until it reaches leaks, gaps, and cracks where air is escaping.
The sealant particles naturally collect at these leakage points and gradually build upon one another until the openings are sealed. Similar to how platelets work to close a cut, the sealant targets only the leaks without coating the entire duct system.
Throughout the process, Aeroseal’s advanced software continuously monitors duct pressure and leakage levels, making real-time adjustments to maximize sealing performance and efficiency. Most duct leaks up to 5/8 inch can be effectively sealed from the inside without the need for extensive duct repairs or replacement.
Step 4: Verify & Certify the Results
Once the desired leakage reduction has been achieved, the sealing equipment is turned off and the temporary access opening is professionally sealed. All register coverings and protective materials are removed, and the HVAC system is returned to normal operation.
A detailed before-and-after performance report is then generated, documenting the reduction in duct leakage and verifying the effectiveness of the Aeroseal process. This report provides homeowners with measurable results and confirmation that their duct system is operating more efficiently.
If you’re considering Aeroseal duct sealing, you probably have a few questions about how it works and what to expect. It’s a newer approach compared to traditional methods, so it helps to understand the details before moving forward. Below, we’ve answered some of the most common questions homeowners ask.
Aeroseal duct sealing is a process that seals leaks from inside your duct system using a fine mist, which travels through the ductwork and targets problem areas. As the particles move through the system, they begin to stick to the edges of small gaps and build up gradually until those leaks are sealed. This allows us to reach areas that would otherwise stay untreated.
Traditional duct sealing service methods usually focus on visible joints, where tape or sealant can be applied by hand, but that only covers what can be seen. Aeroseal works from the inside, which means it can seal hidden leaks across the entire system. Because of that, it often provides more complete and consistent results.
The Aeroseal process uses a sealant that is designed for residential use, and it remains contained within the duct system during application. Once the particles settle and bond to the leaks, they stay in place and do not circulate through your living space. That means your indoor air stays safe while the sealing work is completed.
Most Aeroseal duct sealing appointments can be completed within a few hours, although the timing can vary depending on your system’s size and condition. Our technicians will evaluate your ductwork first and walk you through what to expect before starting. This way, you’ll have a clear idea of how long the process will take.
Many homeowners notice a change in airflow and room temperature shortly after the service is finished, especially in areas that felt uneven before. Some improvements, like lower energy usage, may show up later when you see your next bill. The results depend on how much leakage was present, but most systems respond quickly once those gaps are sealed.
Aeroseal is designed to seal small and moderate leaks throughout your duct system, which covers the majority of common issues. Larger problems, like disconnected ducts or major structural damage, may still need a physical repair. We’ll inspect everything first and explain what your system needs so there are no surprises.
You can stay in your home while the service is being performed, since the duct system is isolated during the sealing process. Our technicians will set everything up so the sealant stays within the ductwork and does not enter your living space. The work is completed with minimal disruption, so your day can continue as usual.
The seal created by Aeroseal is built to last for years, since the material bonds directly to the edges of the leaks inside the duct system. Once those gaps are closed, they typically remain sealed under normal operating conditions. This makes it a long-term solution that supports consistent airflow.
Even in newer homes, duct systems can have small gaps from installation or shifting materials, which can affect airflow and efficiency. Aeroseal duct sealing addresses those hidden issues, which makes it a useful option regardless of the home’s age. If you’re noticing uneven temperatures or higher energy costs, it’s worth taking a closer look.
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