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How It Works

See how Duct Sealing GTA’s Aeroseal process eliminates leaks, balances airflow, and improves comfort. View step-by-step process, benefits, and pricing details.

How Aeroseal Works — A Proven Solution for Duct Leaks

At Duct Sealing GTA, we use the Aeroseal process — a safe, patented technology designed to permanently seal leaks in your ductwork from the inside out. It’s clean, efficient, and delivers measurable results within hours.

Step-by-Step Process

01

Initial Duct Inspection

We begin with a diagnostic test using specialized tools to measure airflow and identify leakagepoints within your system. You’ll get a clear picture of how much air (and money) your ducts are losing.

02

Preparation

All vents and registers are temporarily sealed, and your HVAC system is prepped to receive the Aeroseal injection safely.

03

Sealing from the Inside

The Aeroseal machine injects a fine, non-toxic polymer mist into your ducts. These microscopic particles adhere to the edges of leaks and seal them — even in hidden or hard-to-reach spots.

04

Real-Time Monitoring

Throughout the process, our software tracks the airflow and pressure, providing live updates on the leak reduction rate.

05

Test & Certification

Once the process is complete, we generate a detailed report showing the before-and-after improvement. Most homeowners see 90%+ leak reduction and feel the difference immediately.
Discover How Aeroseal Can Help You

Based on 1.500+ reviews

Key Benefits for Homeowners

Save up to 30% on energy bills

Reduced leakage means your HVAC doesn’t overwork.

Even temperatures throughout your home

No more cold basements or hot bedrooms.

Cleaner indoor air

Sealed ducts prevent dust, allergens, and pollutants from entering.

Longer HVAC life

Less strain on your system = fewer repairs.

Eco-friendly comfort

Lower energy consumption reduces your carbon footprint.

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Aeroseal VS Traditional Sealing

Free System Evaluation

Traditional Sealing

  • Manual taping or mastic on visible ducts
  • Can’t reach hidden cracks behind walls or ceilings
  • Messy, labor-intensive
  • No measurable results
  • Traditional methods last around 60 hrs

Aeroseal Technology

  • Seals leaks internally with aerosolized particles
  • Reaches and seals leaks throughout the system
  • Quick, clean, and computer-monitored
  • Certified before-and-after report
  • The aeroseal method is only 4 hrs max

HVAC Duct Sealing Overview

Any More Questions?

How does it work?

Duct sealing, utilising the patented Aeroseal process, takes a non-toxic liquid sealant, heats and dries it to become an aerosol mist. The mist travels through a pressurised duct system and seals visible, invisible, and inaccessible leaks in the system. We guarantee it and it is certified.

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 the living areas.

Will it harm electronics?

We recommend sensitive electronics be covered.

What about my HVAC accessories?

Our technician is trained to protect all accessories prior to sealing. Some items, such as humidifiers or UV lights, may be removed then reinstalled to prevent damage; others may be bagged or covered.

Do ducts need to be cleaned before sealing?

Extremely dirty ducts should be cleaned. We recommend
the technician assess the condition of the ducts prior
to sealing.

Can I clean my ducts if they are sealed?

Ducts of all material types can be successfully cleaned
after sealing.

Will the ducts be covered with sealant?

The Aeroseal process does not coat or line the ductwork.
The only sealant remaining in the ducts will be at the
previous leak.

How do I know if my ducts leak?

According to the Department of Energy, homes leak
between 25% and 40%. In simple terms, that means air is
not getting to designed spaces causing hot/cold spots in
the house, excessive dust, and high energy bills

How long will it last?

Guaranteed for 10 yrs. in residential applications.
Based on testing, sealant has an expected life of at least 40 years.

Is the sealant safe?

Sealant is Non-Toxic and has been used in hospitals, schools, surgery centers, and government facilities all over
the world.
The sealant has been tested by an independent lab and found to have extremely low concentration of VOC’s, during sealing time only. The primary component has NO OSHA maximum exposure limit.

What is the sealant material made of?

Primary component is Acrylic Polymer, used in greenhouse
roofing, water treatment facilities, and medical devices.

How long does it take to dry?

Drying time is less than 2 hours.

Will my house smell?

There is a mild odor, like Elmer’s Glue, during sealing. Odor should dissipate by next morning (or before).

Should I be in the house?

For the best results and a smooth workflow, we ask that as few people as possible be in the home while sealing is in progress. Our team needs to move frequently throughout the space, and limiting foot traffic helps ensure both safety and efficiency. If anyone in the home is pregnant, elderly, an infant, or uses medical equipment, we recommend stepping out as a simple safety precaution.

How big of leak will be sealed?

Up to a 5/8” hole can be sealed during normal range
of productivity.

What about leaks that are too big?

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