Seal your ducts from the inside
So, what is AEROSEAL?
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.
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.
Air Duct System Diagnostic & Sealing 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 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.
The Aeroseal duct sealing system effectively seals residential home’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 Aeroseal 6-step process:
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
Ductwork Sealing - Benefits to the Homeowner
Aeroseal can reduce duct leakage by up to 90% and save a typical homeowner up to $300 a year in energy costs
Sealing your leaky ductwork will improve the performance of your AC system AND make 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
Take a look at Aeroseal as a viable solution for your duct issues. It is the most effective way to seal your duct because it reaches areas of the duct system that many times cannot be accessed by conventional methods.
Aeroseal Frequently Asked Questions
Q1: Exactly how much money will a homeowner save by having his/her ducts aerosealed?
A: This is probably the number one question asked by most anyone thinking of having their home or building aerosealed. As you can imagine, the answer varies depending upon a variety of factors. If, for instance, you live in Kansas City where the furnace is likely in use 2/3rds of the year, you will save more than someone who lives in a milder city like Portland, Oregon. Your utility rate, the severity of leakage, the design of the HVAC system and other factors all influence your energy costs and the actual amount you will save with Aeroseal.
Not such a satisfying answer, I know. So let’s try this.
After years of aerosealing homes, we can provide average savings that others have realized. Homeowners in the Midwest, Northeast, and Mid Atlantic regions of the U.S. typically save $300 – $400 a year on utilities. Those in the Northwest, Southwest and South save $600 – $900 a year. And now the customary disclaimer… your mileage may vary.
Q2: How quickly will it take for a homeowner to get a return on his/her aeroseal investment?
A: This is really part two to the first question, and so the answer is very similar…it depends. Figures show that with all things considered, homeowners see an ROI on average in 2.5 to 5 years. My favorite anecdote to this question came from a homeowner who told me that when he showed his investment counselor the calculated energy savings he was expected to get from Aerosealing his home, he was told it was the best investment he could make. The broker said he couldn’t offer his client a single stock or investment option that would provide the type of return that he would be getting with Aeroseal.
Q3: How long will Aeroseal last?
A: Aeroseal has a ten-year warranty – but don’t confuse that with lifespan, which is much longer. Accelerated testing conducted at Lawrence Berkeley National Laboratory resulted in Aeroseal showing no sign of deterioration in the aeroseal seals – and it continued to seal much past the life span of tape and mastic. It has been durability tested to over 40 years. It exceeds all UL standard tests for durability. So the guarantee – the strongest warranty in the industry – covers the contractor for 10 years for parts and labor for any failure in Aeroseal seal but Aeroseal seal itself has proven to last for decades.
Q4: Is it safe.
A: The aeroseal sealant itself consists of a vinyl acetate polymer. Its ingredients are those commonly found in hairspray and chewing gum. In other words, yes, it is very safe. It’s nontoxic (As certified by the Occupational Safety and Health Administration) and it is UL approved.
Most telling however, is that aeroseal has been used at some of today’s most prestigious medical facilities – from the Mayo Clinic to Nemours Children’s Hospital. Day-to-day operations at these facilities often remained virtually uninterrupted during its application. It doesn’t get much safer than that.
Q5: How many homes have been aerosealed?
A: As of the end of 2013, nearly 100,000 homes have been sealed. Add about 200 additional homes to that figure on a weekly base.
Q6: Is there an odor?
A: At the time of application, there is a very mild odor, similar to that of Elmer’s glue. This dissipates completely within a few hours.
Q7: Will the ducts be covered with sealant?
A: Aeroseal does not coat the ductwork. It remains suspended in air until it comes to a leak and is forced to the opening. Here it clings to the edge of the hole and then to other sealant particles until the leak is completely sealed.
Q8: Does Aeroseal seal all leaks?
A: Aeroseal seals leaks as large as 5/8’’. This encompasses the overwhelming majority of problem leaks in today’s homes and buildings. The U.S. Department of Energy states that “small holes” are the biggest cause of duct leakage. These holes are found primarily along the ductwork seams and around fittings.
It is true that in some cases, portions of the ductwork become disconnected and Aeroseal, of course, cannot remedy this situation. But the Aeroseal process will alert the professional that this problem exists and allow him to address and fix this problem.
The bottom line is that, on average, Aeroseal effectively seals 95% or more of duct system leakage.
Q9: Will Aeroseal seal flex duct? Fiberglass lined ducts? Fiberboard ducts?
A: Yes, yes and yes. In fact, we’ve yet to come across ductwork that Aeroseal will not effectively seal. That includes cement and brick passageways as well.
Q:10: Why use Aeroseal when I can do it by hand with tape and mastic.
A: There are several reasons. First, it’s simply impossible to manually reach all the leaks in ductwork that has already been installed. The overwhelming majority of the duct is hidden or virtually impossible to access for manual sealing. If you want to have a real impact on energy savings and HVAC performance, you’ll need to reach and seal leaks throughout the entire duct system.
Even in new homes, we hear again and again about new ductwork that has been installed and meticulously sealed by hand, yet continues to under perform due to leaks. And if the manual sealing passed code when first installed, it often fails just months later following climate changes or other external factors.
With Aeroseal, you also get documentation of results. The process begins with a computerized analysis of the ductwork and ends with a post-test. You and your customers get a printout of the results that highlight the before and after results.
Lastly, it’s just better. Studies comparing the two show that Aeroseal is 60% more effective and 30% less expensive than manually sealing ductwork.