Aeroseal HVAC Sealing: A Modern Solution for Leaky Ductwork

Leaky air ducts are one of the most common—and costly—problems in residential and commercial HVAC systems. Many homes lose 20–40% of conditioned air through gaps, cracks, and disconnected duct joints. Aeroseal HVAC sealing is an advanced technology designed to solve this issue from the inside out, improving efficiency, comfort, and indoor air quality without major demolition.

What Is Aeroseal?

Aeroseal is a duct sealing technology that seals air leaks from the inside of your duct system. Instead of manually taping or sealing accessible duct joints, Aeroseal uses a computer-controlled process to inject microscopic sealant particles into the ductwork. These particles travel through the system and naturally adhere to leaks, sealing them effectively.

The result is a tightly sealed duct system with dramatically reduced air loss.

Why Duct Sealing Matters

Even a high-efficiency HVAC system can underperform if the ductwork is leaking. When air escapes before reaching rooms, your system must work harder to maintain the desired temperature.

Common problems caused by leaky ducts include:

Uneven temperatures between rooms
High energy bills
Excess humidity
Dusty indoor air
Increased wear on HVAC equipment

Sealing ducts helps your system operate as designed.

How the Aeroseal Process Works

The Aeroseal procedure is precise and technology-driven:

Duct system inspection – Technicians measure how much air leakage exists.
Vent sealing – Registers and vents are temporarily sealed.
Pressurization – The duct system is pressurized.
Sealant injection – A non-toxic, water-based sealant mist is released into the ducts.
Leak sealing – Particles collect at leak edges and seal gaps up to 5/8 inch wide.
Final testing – The system is retested to confirm leakage reduction.

Homeowners can see before-and-after leakage measurements in real time.

Benefits of Aeroseal HVAC Sealing

1. Improved Energy Efficiency

By reducing air leakage, your HVAC system doesn’t have to run as long to cool or heat your home.

2. Lower Utility Bills

Sealed ducts can significantly reduce energy waste, especially in hot climates where AC runs frequently.

3. Better Comfort

Rooms that were previously too hot or too cold often become more balanced after duct sealing.

4. Enhanced Indoor Air Quality

Sealing leaks prevents dust, attic air, insulation particles, and pollutants from entering the duct system.

5. Extended HVAC Lifespan

When your system works less to maintain temperature, components experience less strain.

Is Aeroseal Better Than Traditional Duct Sealing?

Traditional duct sealing involves manually applying mastic or tape to accessible areas. While effective in certain cases, it cannot reach leaks hidden behind walls, ceilings, or tight spaces.

Aeroseal, developed by Aeroseal, seals leaks throughout the entire duct system—including areas that are otherwise unreachable—without removing drywall or accessing attic crawl spaces extensively.

Is Aeroseal Safe?

Yes. The sealant used is water-based and non-toxic. It remains flexible after curing and is designed specifically for HVAC duct systems. The process is safe for homes, businesses, and even medical facilities.

When Should You Consider Aeroseal?

You may benefit from Aeroseal HVAC sealing if:

Your home has hot and cold spots
Your energy bills are higher than expected
You recently replaced your HVAC system but comfort hasn’t improved
Your home is older and likely has aging ductwork
You notice excessive dust accumulation

It is also popular in new construction projects to improve energy efficiency before drywall installation is complete.

How Long Does Aeroseal Last?

Aeroseal seals are designed to last for decades under normal HVAC operating conditions. Many systems maintain their improved efficiency long-term without additional sealing needed.

Final Thoughts

Aeroseal HVAC sealing is an innovative solution for one of the most overlooked issues in heating and cooling systems—duct leakage. By sealing air loss from the inside, it enhances comfort, improves energy efficiency, and reduces strain on HVAC equipment without invasive construction.

If your HVAC system isn’t performing the way it should, duct leakage could be the hidden culprit—and Aeroseal may be the solution that restores comfort and efficiency to your home.