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Aerosol Ductwork Breakthrough:
Ductwork Sealing Technology

From the research lab to your home

Videos

Homeowner, Geraldine Jimenez, Seals Her Ducts (American Institute of Physics New Item)


See our sealing process in action (Short 2MB).
 
Many people view these videos online by:
1. "Right-clicking" on the link
2. Selecting "Save Target As"
3. Clicking "Open" when downloading is complete.

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Exclusive Patented Ductwork Sealing Technology

Aeroseal's aerosol ductwork sealing technology was invented and developed by the Energy Performance of Buildings Group at Lawrence Berkeley National Laboratory in 1994. This technology internally seals duct leaks in air distribution ducts by injecting a fog of aerosolized sealant particles into a pressurized duct system.

The key to the technology is to keep the particles suspended within the air stream without depositing on the duct surfaces until they reach the leaks, where they leave the air stream, deposit at the leak edges, and seal the leaks. Aerosol particles are directed toward and deposit at the ductwork leaks because:

• All supply and return grilles are temporarily sealed, so that all the airflow passes through the ductwork leaks;
• Small aerosol particles are kept suspended in the airflow by continuous air movement;
• As the air stream makes a sharp turn to exit through a leak, the particles collide with and adhere to the leak edges; and
• Using adhesive solid particles allows the built-up seal to span leaks as much as one inch across.

Advantages of Aerosol Ductwork Sealing

Aerosol ductwork sealing improves upon conventional air duct-leak sealing methods because it:

• Seals more of the leakage by getting to inaccessible leaks;
• Provides better working conditions so that workers do not have to spend a long time in the attic or crawl space to perform the sealing; and
• Is less time consuming to carry out and is less costly to homeowners.

More advantages on ductwork sealing.

Carrier Aeroseal, LLC  has the exclusive license to use this technology on residential and small commercial buildings.

Sealing ductwork leaks reduces heating and cooling energy use by up to 30 percent and annual utility bill savings of up to $300 (see ductwork sealing).

Ductwork sealing reduces the entry of:

• Dust
• Excess humidity
• Automotive exhaust
• Radon gas
• Fumes from stored paints, solvents, pesticides, etc.

Ductwork sealing improves the performance of heating and cooling systems, making you more comfortable by:

• Cooling or heating the house more quickly
• Delivering more hot or cold air
• Distributing heating and cooling more uniformly throughout your house

Each year, U.S. residential ductwork leakage costs consumers $5 billion. This energy loss is equivalent to:

• The annual oil production from the Arctic National Wildlife Refuge
• The annual energy consumption of 13 million cars

The Carbon dioxide uptake of 7 billion trees is needed to offset the global warming impacts of this energy waste.

For more see ductwork sealing .

Ductwork Sealing Publications

Click here for independent ductwork sealing publications.

Who Supports Ductwork Sealing Research?

Research to develop ductwork sealing technology was funded by:

• The California Institute for Energy Efficiency
• U.S. Environmental Protection Agency
• Electric Power Research Institute
• U.S. Department of Energy

     (For more, see EPB)