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Q: What size of holes can be sealed using the Aeroseal air duct sealing process?
A: Holes and cracks up to 5/8th of an inch wide can be completely sealed.

Q: What does the Air Duct Diagnostic tell me?
A: Basically, the diagnostic measures air duct leakage and shows you the precise temperature of all air registers. 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, tests and reports provide 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. The diagnostic objectively shows this.

Q: In a nutshell, how does an Aeroseal air duct seal work?
A: Basically:
1. Preseal test to measure the leakage as a baseline for measuring progress.
2. Aeroseal air duct sealing
a. Block off the registers with foam or plastic.
b. Pump an aerosol into the duct system.
c. Since the air has no place to go except out through the leaks (the registers are blocked), the sealant material is deposited precisely at the air duct holes where leakage occurs.
d. A computer and sensors are used to measure and control the progress. The technology is patented from the University of California and the process is endorsed by the Environmental Protection Agency.
3. Postseal test to measure improvements.
4. Room airflow measurements to verify improvements.
5. Complete report that is printed on the spot to provide a record of improvements.

Q: Does the air duct sealing material become brittle?
A: The vinyl sealing material remains rubbery, never cracking.

Q: How long will the air duct sealing material last?
A: The sealing material has been found in rigorous testing to last over 10 years without failure.

Q: Do air ducts need to be cleaned before air duct sealing?
A: It’s likely that the holes and cracks in the ductwork have allowed dust and other particulate matter to enter the system. If you are experiencing extensive levels of household dust, this might be the reason. Your Aeroseal contractor can advise whether it will be necessary to clean your ductwork prior to sealing.

Q: Does the sealant coat the inside of the ductwork?
A: The sealant only sticks to the holes in the air duct without coating the rest of the duct.

Q: Is the sealing material used by the Aeroseal air duct sealing system safe?
A: The vinyl polymer is safe, using the same base material as used in chewing gum and is UL tested and approved.

Q: Does the sealant leave an odor?
A: The Aeroseal air duct sealing process leaves no lingering odor, and since the material does not put off gas over time, there will be no odor for the life of the product.

Q: If the rooms of my home have inconsistent temperatures, can Aeroseal improve the performance of my heating and A/C system(s)?
A: The Aeroseal sealing system can help improve the comfort of your home by reducing the difference in temperature levels throughout your home.

Q: Can the Aeroseal air duct sealing system help reduce my utility bills?
A: Some homeowners have saved up to 40% of their energy bills after having the Aeroseal air duct sealing system seal their central air duct system.

Q: Can the Aeroseal air duct sealing system reduce the noise made by the return and supply grilles in my home?
A: This noise is usually the result of two conditions. One is created when the ductwork is undersized and air is rushing through your air duct system. The other condition is caused when a limited amount of air is allowed to flow through the indoor coil of your heating and cooling system. Both problems can be identified during the diagnosis process of the Aeroseal sealing system process. Once the exact problem has been identified, your contractor can provide the best solution for noise reduction.

Q: Can the Aeroseal air duct sealing system reduce the amount of dust in my home?
A: Ductwork runs through attics, crawlspaces, basements, garages, and walls. Leaking return air ducts pull in dust and other indoor air pollutants and sends them to the central heating and cooling system. From there they sent to the living areas of your home. The Aeroseal air duct sealing system can reduce the amount of leakage by as much as 90%, reducing dust and other indoor air pollutants from the conditioned air in your home.

Q: Is the sealing guaranteed or can I get my money back? What if it doesn’t work?
A: 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 9000 plus seals done to date, we have yet to receive any warranty claims.