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The Aeroseal Process

Detecting Leaks

Air Duct System Diagnostic & Sealing Process

Aeroseal Duct Sealing is a patented breakthrough technology that tackles leaks from the inside out. Aeroseal software allows the technician to accurately measure the duct leakage in residential homes and commercial buildings. The Aeroseal process puts escaping air under pressure and causes polymer particles to stick first to the edges of a leak, then to each other until the leak is closed.

While energy savings resulting from reducing leakage vary based on climate, utility rates, and your heating and cooling system, the other goals of even temperatures in all rooms, improved indoor air quality, and reduction of odors and fumes will be achieved regardless of those conditions. In commercial building applications, Aeroseal also solves air flow and ventilation issues in addition to energy savings.

The Aeroseal 6-step process takes very little time to bring you big savings and comfort:
  1. Wall registers are covered in order for air to escape only through the leaks
  2. Sealant in injected into the ducts for approximately 1 hour
  3. Small aerosol particles are kept suspended in the airflow by continuous air movement
  4. As the air stream makes a sharp turn to exit through a leak, the particles collide with and adhere to the leak edges
  5. Ducts are sealed with only 1-2 oz. of the sealant material remaining in the ducts
  6. A computer-generated analysis summarizing your home’s or building’s amount of leakage is generated, providing verification of success of the process
Click on the tabs below to learn more about the process:

The patented Aeroseal sealing process is the most effective, affordable, and viable method of sealing the central heating & cooling and ventilation ductwork in residential homes and commercial buildings.

The Aeroseal duct sealing system effectively seals residential home’s and commercial building’s ductwork from the inside by using a UL tested and approved sealing material. It's clean, safe, and guaranteed for 10 years in residential application.

Sealing the air duct system in your entire home typically takes only 4-8 hours. You'll immediately receive energy savings and a noticeable improvement in home comfort. Sealing process in commercial building depends on the leakage in the duct work and specific air flow or ventilation problem.

Aeroseal Diagnosis

In an Aeroseal air duct diagnostic, a Homeworks certified Aeroseal technician inspects and evaluates your central air duct system and recommends ways to maximize your savings and improve your home comfort or improve building efficiency and solve air flow / ventilation problems.

Major factors during inspections are construction practices, type of duct work, age of the home / building, hot or cold or stuffy rooms, Indoor Air Quality (IAQ) problems, high energy bills etc.

Aeroseal's trained and certified technicians use computer-based tools and reports to gather information about duct leakage and register airflows.

Aeroseal Seal and Verify

To start the Aeroseal duct sealing process, all room, ceiling or floor registers are replaced with foam plugs.

A small access hole is cut into the supply or return air plenum and a temporary collar is attached. The air conditioning indoor coil, fan, and furnace are temporarily blocked with a foam plug to avoid the entrance of any sealing particles into this equipment.

Once the system is properly sealed, the patented injection machine is connected to the air duct system using a flexible plastic tube.

The exclusive Aeroseal duct sealing system injects adhesive particles into the air duct system. The particles travel through the air duct system seeking holes and cracks that are located throughout the ductwork. The adhesive duct sealing particles attach directly onto the edges of any hole and crack, effectively sealing it without coating the inside of the ductwork.

When the sealing process is completed, the results are verified and provided to the customer.

Aeroseal ResultsAfter the ductwork sealing: Measuring the duct seal.

Once the Aeroseal air duct sealing is complete, the technician will again measure the duct system leakage.

A sealing certificate and a tightness certification are generated by the computer. The sealing certificate shows duct leakage amounts before and after sealing, as well a graph of the sealing process, plus overall heating or cooling capacity improvement. The tightness certification, affixed to your duct system, shows the tightness of the duct system after completion of the sealing process.

The measured result of a typical Aeroseal air duct sealing process is shown here:

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, return and exhaust 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 5/8 inch wide.

Would you like to learn more?

Contact Homeworks Aeroseal professionals today and we’ll be happy to investigate and locate the hidden problem areas in your leaky ducts. We’ll properly diagnose your system, providing you with a cost-effective, state-of-the-art solution to your duct issues. Aeroseal seals up the leaks, the wasted money, and the hazards of inefficient ductwork.