Ashton Heating & Cooling


Straight FAQs about Aeroseal

How long does Aeroseal last? Is the sealant used in Aeroseal safe? These are the questions we hear a lot and you’ll find the answers below. If you have any other questions please do not hesitate to give Ashton Heating and Cooiling a call – we’re here to help!

Can Aeroseal fix my hot or cold rooms?

By sealing your ductwork utilizing the Aeroseal technology you can expect air to be delivered where it is designed to go and not into your not basement, attic, or crawl space. This reduces hot or cold spots in rooms and between floors.

Can Aeroseal reduce the amount of dust in my home?

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 are 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.

How much will Aeroseal save me in energy costs?

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.

How long does Aeroseal last?

Aeroseal is guaranteed for 10 years. That doesn't mean the process will fail after 10 years. It has been stress tested for 40 years in residential applications

Will my house smell after?

There is a very mild odour similar to Elmer’s Glue during the sealing process. The odour will dissipate completely by the next morning – but usually before.

Is Aeroseal safe?

Sealant used by Aeroseal is non-toxic and has been used in hospitals, surgery centers, and government institutions. UL approvals for UL 1381 for aerosol based technology – UL 723 for smoke and flame rating of 0 and UL 181 for mold growth. Primary component is Vinyl Acetate Polymer, used in water based paints, hair spray, and chewing gum.

How long does it take to dry?

It only takes around 2 hours for Aeroseal sealant to dry.

What VOCs are emitted?

The sealant used by Aeroseal has been tested by an independant lab and found to have extremely low concentration of VOC’s during sealing time. The primary component has NO OSHA maximum exposure limit.

How big of a leak will it seal?

Up to a 5/8th inch or 1.6 cm round hole can be sealed by Aeroseal.

What about bigger leaks?

Broken and disconnected ducts – large leaks – need to be fixed prior to sealing with Aeroseal.  If a hidden large leak is uncovered during sealing, the process is stopped and a solution is discussed.

Where does the sealant leaking from the ducts go?

Sealant escaping from the ducts will settle in wall cavities, attics or crawl spaces.  During the process we will filter the air to capture any sealant entering any living areas.

Do ducts need to be cleaned prior to sealing?

Extremely dirty ducts should be cleaned.  We recommend that a technician from Ashton Heating and Cooling assess the condition of ducts prior to beginning to Aeroseal process.

Can I clean my ducts after they are sealed by Aeroseal?

Ducts of all material types can be successfully cleaned after they have been sealed with Aeroseal.

Will the insides of my ducts be covered in Sealant?

The Aeroseal process does not coat or line the ductwork.  The only sealant remaining in the ducts will be at the spot of the leak that was sealed.

Ashton Heating and Cooling has decades of experience with the installation, service, and maintenance of gas fireplaces, oil furnaces, gas furnaces, air conditioners, tankless hot water heaters, and more! We also provide duct cleaning, furnace cleaning, air conditioner cleaning, and gas fireplace cleaning. Ashton Heating and Cooling is a proud to offer industry-leading brands including Amana heating and cooling systems, Navien water heaters, Rinnai water heaters, and Continental fireplaces. Contact us for prompt, friendly, professional service including 24/7 emergency repair services to your door! We provide onsite service to all of Durham Region.


Call us toll Free at 1-855-240-6055