Aeroseal Duct Sealing
Aeroseal seals leaks in your ductwork from the inside, without opening walls or ceilings. Leakage is measured before and after, so you see the result in numbers.
Why Duct Leaks Matter
Natural Resources Canada’s home energy guidance flags leaky ductwork as a common source of wasted heating and cooling, especially where ducts run through unheated spaces. Every leak is conditioned air escaping into walls, basements, attics or garages instead of reaching the rooms it was meant for – and dust from those spaces pulled back in through leaks on the return side. Most ductwork is hidden behind finished surfaces where it cannot be sealed by hand. Aeroseal works from the inside: the duct system is pressurized, a sealant is introduced as a fine mist, and the particles build up at the edges of each leak until it closes. Because sealed ducts hold whatever is already in them, they are best cleaned first – see air duct cleaning.
Signs Your Ducts Are Leaking
How Aeroseal Works
Sealing from the inside, verified by measurement.
NADCA Certified
Members of the National Air Duct Cleaners Association.
1,250+ Google Reviews
One of the most-reviewed duct cleaners in Ontario.
Serving Since 1997
Twenty-nine years cleaning ductwork across the GTA.
Fully Insured
Certificates of insurance available on request.
Common Questions
Do you need to open walls or ceilings?
No. Sealing happens from inside the ducts, which is the point – it reaches leaks in ductwork hidden behind finished walls and ceilings.
Should the ducts be cleaned first?
Yes. Sealing locks in whatever is inside the ducts, so cleaning first is recommended, and many customers book both together.
How do I know it worked?
Duct leakage is measured before sealing starts and again when it finishes. You get the before-and-after numbers rather than an estimate.
Is this the same as taping the ducts?
No. Tape and mastic only reach joints you can see and get to. Aeroseal reaches leaks throughout the system, including those behind drywall.
SERVICE AREAS
Where We Work
We serve homes and businesses right across the Greater Toronto Area and surrounding regions.
Toronto · Barrie · Bolton · Brampton · Burlington · Caledon · Etobicoke · Hamilton · Innisfil · Markham · Milton · Mississauga · Newmarket · North York · Oakville · Orangeville · Richmond Hill · Scarborough · Vaughan
Ready for Cleaner Air?
Talk to a NADCA-certified technician today. No call centres, no telemarketing – just straight answers from the people who do the work.