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Aeroseal Homeseal - Duct Sealing

Aeroseal 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.

The technology was developed within the Indoor Environment Program at Lawrence Berkeley National Laboratory, whose IAQ scientists tested it. The research was funded by US Environmental protection agency, US dept. of Energy, Electric Power Research Institute and California Institute of Energy and Environment.

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:

  • Wall registers are covered in order for air to escape only through the leaks
  • Sealant in injected into the ducts for approximately 1 hour
  • 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
  • Ducts are sealed with only 1-2 oz. of the sealant material remaining in the ducts
  • A computer-generated analysis summarizing your home’s or building’s amount of leakage is generated, providing verification of success of the process

Does your home or building experience?

  • High Energy Bills?
  • Constantly Running System?

Over 90% of existing buildings located throughout North America have air duct systems that contain small holes and cracks that reduce the level of comfort and increase heating and cooling costs.

Leaks are caused by a variety of factors including the age of the dwelling, type of construction, type of ductwork and local building codes.

Repairing and patching leaks in HVAC duct systems saves cooling, heating, and fan energy. In air-based systems, ducts deliver all of the heating and cooling to conditioned spaces. Any duct leakage translates into extra air that must be supplied so sufficient heating or cooling reaches the conditioned space. This not only increases effective heating and cooling loads, it also increases fan energy due to increased flow and/or run time. Sealing duct leaks reduces the amount of heated or cooled air the supply fan must handle to deliver the same amount of air to the conditioned space.

Aeroseal provides a 10-year warranty on the seals created with our process. We have enormous confidence in the quality of our seals since they are based on Lawrence Berkeley National Laboratory research and a patent through the University of California. The EPA has endorsed Aeroseal, as have numerous local energy utilities. Note: the warranty is for on-site seal failures and does not cover additional damage (e.g. an electrician that steps on a duct while running wiring), wear or tear (i.e. the shelf life of a plastic duct is passed, rodents eat into a duct, or a duct rusts out), and subsequent replacement of failed ducting. Overall, in the 85000 plus seals done to date, we have received negligible number of warranty claims.