Proper duct sealing is essential for improving energy efficiency, maintaining indoor air quality, and ensuring HVAC systems operate at peak performance. In this blog, we will explore US-patented HVAC duct sealing technology, focusing on how duct sealant works, what it is made of, and why it is a game-changer in the industry.
What is Duct Sealing?
Duct sealing involves sealing leaks, gaps, and cracks in a building’s HVAC ductwork to prevent air leakage. Even small leaks can lead to significant energy losses, higher utility bills, and reduced system efficiency. A well-sealed duct system ensures:
- Improved airflow and efficiency
- Better indoor air quality
- Lower heating and cooling costs
- Enhanced HVAC system lifespan
How Does Duct Sealant Work?
The patented AeroSeal Duct Seal process involves injecting a specialized sealant into the duct system to close leaks from the inside. Here’s how the process works:
- System Preparation:
- The HVAC system’s furnace and vents are temporarily blocked off.
- A small access hole is created in the ductwork.
- Layflat tubing connects the duct sealing system to the ductwork.
- Sealant Injection:
- The duct sealant is superheated, converting it into a dry fog of 4-10 micron-sized particles.
- 95% of VOCs (volatile organic compounds) and 100% of water evaporate during this process.
- Leak Sealing:
- The fine sealant particles flow towards leaks as air escapes.
- The particles bond together, layer by layer, effectively sealing holes as small as a human hair and as large as 5/8 inches.
- Final Results:
- The duct sealant dries into a flexible, rubber-like texture.
- Its elasticity prevents cracking or deterioration over time.
- Air leakage is significantly reduced, improving HVAC performance and efficiency.
What is Duct Sealant Made Of?
Duct sealant is a carefully formulated milky-white liquid that is safe, stable, and non-toxic. Its key components include:
| Component | Percentage by Weight |
| Water | 50% – 70% |
| Acrylic Polymer | 20% – 40% |
| Silica (Amorphous) | 1% – 5% |
| Propylene Glycol | 1% – 5% |
Safety and Environmental Impact
- The primary ingredient, vinyl acetate, is also found in chewing gum, pacifiers, and envelope adhesives.
- Low VOC Content: Only 0.35% VOCs by weight, which is negligible.
- Any remaining VOCs are removed by air scrubbers and fully dissipate within two hours after sealing.
- It is non-flammable and non-toxic, making it safe for homes, schools, hospitals, offices, and government buildings.
Why Use Patented Duct Sealant?
With over 200,000 successful projects worldwide, patented duct sealing has become the industry standard. Its benefits include: ✔ Energy Savings – Reduces HVAC energy loss by up to 30%.
✔ Improved Air Quality – Prevents dust, allergens, and pollutants from entering ducts.
✔ Durability – Stays flexible and resistant to cracking or deterioration.
✔ Faster Process – Seals ducts from the inside without major disruption.
Final Thoughts
US-patented HVAC duct sealant technology is an innovative solution for ensuring airtight, efficient duct systems. By sealing leaks from the inside, it enhances performance, air quality, and cost savings, making it an essential upgrade for residential, commercial, and industrial HVAC systems.
Are you considering duct sealing for your HVAC system? Get in touch today to learn more about how patented duct sealing can optimize your building’s energy efficiency! 🚀