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.
The University of California was granted initial patents in 1996 and 1999, and Aeroseal holds an exclusive license to the technology.
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 process won the “Best of What’s New” award from Popular Science magazine, and the “Energy 100” award from the U.S. Department of Energy (DOE). The DOE also rated the Aeroseal duct sealing process as one of the 23 most beneficial technologies available to American consumers that has come out since the agency was created.
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.
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.
The amount and percentage of air leaking from the ductwork and other air flow or ventilation problems.
Inconsistent temperature variations throughout the home or building.
Air flow levels for each room.
Backdraft and combustion safety hazard potential for fireplaces, furnaces, and gas heater rooms and closets in residential homes.
Manual repair needs of air duct system.
In an Aeroseal air duct diagnostic, a 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.
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.
The air sealing system results are guaranteed for 10 years for residential homes.
After 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.
Aeroseal can reduce duct leakage by up to 90% and save a typical homeowner up to $1000 a year in energy costs and a typical building up to 30% of HVAC energy use.
Aeroseal’s aerosol ductwork sealing technology was invented and developed by the Energy Performance of Buildings Group at Lawrence Berkeley National Laboratory in 1994. The research was funded by US Environmental protection agency, US dept. of Energy, Electric Power Research Institute and California Institute of Energy and Environment.
The University of California was granted initial patents in 1996 and 1999.
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.
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
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.
Inspection discovers any obvious break in the duct work and, as the initial step of the sealing process, the Aeroseal system will establish an exact amount of leakage in the duct system. Of course, many people already know that a room or two in their house doesn’t get good air circulation because they can feel it. Or, they already know that their energy bill is high because they see it. The diagnostic measurement, provides a scientifically valid means to understand the performance of your air duct system. Many people are surprised to learn that homes typically leak 30% to 40% or more of their air through air duct leaks.
A series of government reports have shown that air duct sealing can lead to up to $850 in energy savings per year. Some homeowners have saved up to 40% on their energy bill. Naturally, exact savings are difficult to precisely estimate since they depend on a multitude of variables such as your weather, house condition and design, your heating and air conditioning system, system usage – as well as other factors like energy prices. Also, all Aeroseal air duct certified technicians are qualified to run a program made by the Environmental Protection Agency (EPA) called “Duct Investor”. Duct Investor takes a comprehensive list of variables and provides a homeowner with the best available estimate of what they should realize in cost savings.
Everything from booking the appointment to having the fix completed was great. It is not often you speak to such kind people throughout the entire process. Erik explained everything in detail to me and made sure I understood everything. I will definitely be coming back in the future. Thank you for your service!
- Michelle Welles | Google Review
New Nest Thermostat
I would highly recommend using Mark Lindsay and Son for any Google Nest products installation. I had two Nest Thermostats (3rd Generation) installed by them and I could not be any happier with the process and results. My technician Pete was very professional, knowledgable, and kept me informed throughout the whole installation process. I am a very happy customer and I will continue to use them for all my home needs.
- Cesar Avalos | Google Review
Outstanding service from start to finish. The techs were professional, quick and did an amazing job of making the new central A/C unit fit in the space provided.