DAVESDUCTS • AEROSEAL DUCT SEALING • TORONTO & THE GTA
Aeroseal duct sealing — tested before, repaired where needed, then measured again after sealing.
DAVESDUCTS combines duct leakage testing, inspection, accessible manual duct repairs and Aeroseal sealing to reduce qualifying duct leakage and document the before-and-after result. Aeroseal is not a substitute for broken, disconnected or badly damaged ductwork — those defects have to be identified and repaired first.
WATCH HOW AEROSEAL WORKS
See the duct-sealing process in action.
Aeroseal seals many otherwise inaccessible duct leaks from inside the duct system. Watch the process below, then continue through the page for testing, repair, limitations, measured results and current pricing.
AEROSEAL PROCESS VIDEO
Measured before. Sealed from inside. Verified after.
The process begins with duct-system preparation and leakage testing. The prepared ducts are pressurized, atomized sealant is introduced, and escaping air carries the sealing material toward qualifying leaks.
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WHAT IT SOLVES
Duct leakage sends conditioned air somewhere other than where you intended.
Leaky ductwork can reduce the amount of heated or cooled air reaching the rooms it is supposed to serve. Depending on where the leakage is located, it can also draw air from basements, attics, crawlspaces, garages or wall cavities into the duct system.
SUPPLY DUCT LEAKAGE
Conditioned air escapes before it reaches the room.
Leaks on the supply side can waste airflow into unconditioned or unintended spaces and contribute to uneven comfort.
- Hot or cold rooms
- Weak airflow at registers
- Losses into attics, basements or crawlspaces
- Reduced distribution efficiency
RETURN DUCT LEAKAGE
Unwanted air can be pulled into the system.
Return-side leaks can draw air and contaminants from spaces the HVAC system was never intended to use as a return-air source.
- Dust and pollutant pathways
- Air pulled from wall or ceiling cavities
- Airflow imbalance
- Comfort and distribution problems
DUCT LEAKAGE TESTING
Start by measuring the leakage — not by guessing.
Before sealing, the duct system is pressure tested so we can establish a baseline leakage rate. That gives us an objective starting point and allows the final result to be compared against the original condition.
01
Inspect
We review accessible ductwork and look for major defects, disconnections, blockages and conditions that should be corrected before sealing.
02
Pressure Test
The duct system is tested to quantify leakage before the Aeroseal process begins.
03
Record the Baseline
The pre-seal leakage result is documented so the post-seal measurement can be compared to an actual starting number.
MANUAL DUCT REPAIRS
Fix the defects Aeroseal is not designed to fix.
Aeroseal is designed to seal qualifying leakage at joints, seams and small openings. It does not reconnect broken ducts, remove blockages or bridge major physical gaps.
DISCONNECTIONS
Broken or separated ductwork.
Disconnected ducts and large openings have to be located and physically repaired before Aeroseal sealing can be completed properly.
ACCESSIBLE LEAKS
Seal what can be reached manually.
Accessible joints and connections can be repaired with appropriate manual sealing methods such as mastic or metal tape before the aerosol process.
BLOCKAGES
Airflow restrictions are a different problem.
Aeroseal does not clear blocked ducts or correct undersized or poorly configured ductwork. Those concerns require separate diagnosis and correction.
THE AEROSEAL PROCESS
Seal qualifying leakage from inside the duct system.
Once major physical defects have been addressed, the HVAC equipment and connected accessories are isolated from the duct system. Registers are temporarily sealed and the Aeroseal equipment pressurizes the ductwork while aerosolized sealant is introduced into the air stream.
01
Protect & Isolate
HVAC equipment and accessories are isolated and the work area is protected before sealant is introduced.
02
Seal the Registers
Supply and return openings are temporarily sealed so the duct system can be properly pressurized.
03
Inject the Sealant
Aerosolized sealant travels through the pressurized duct system and accumulates at qualifying leaks rather than coating the entire duct interior.
04
Monitor the Result
Leakage is monitored during the sealing process so progress can be measured as the duct system tightens.
BEFORE & AFTER MEASUREMENT
The result should be measured — not just described.
DAVESDUCTS includes a pre-seal leakage report and a post-seal leakage report. The final certificate documents the measured reduction achieved during the Aeroseal process.
BEFORE
Pre-Seal Leakage
The initial pressure test establishes how much duct leakage exists before manual repairs and Aeroseal sealing are completed.
AFTER
Post-Seal Leakage
The system is tested again after sealing so the reduction can be documented and compared with the original baseline.
WHY THIS MATTERS
You receive a measurable before-and-after result.
The value of duct sealing is not a claim that “the ducts were sealed.” The important number is how much measured leakage existed before the work and how much remained afterward.
LIMITATIONS
Aeroseal fixes duct leakage. It does not fix every HVAC problem.
The HVAC equipment is isolated from the sealing process. Aeroseal does not repair mechanical equipment and it does not correct every type of duct or airflow deficiency.
EQUIPMENT
It does not repair furnaces, heat pumps or air conditioners.
Equipment problems, refrigerant issues, failed motors, controls and other mechanical defects require separate HVAC diagnosis and repair.
LARGE OPENINGS
It does not bridge major gaps.
DAVESDUCTS notes that Aeroseal is not intended to seal gaps larger than approximately 5/8 inch. Major defects need manual repair.
DUCT DESIGN
It does not correct undersized or badly designed ductwork.
Static-pressure problems, undersized returns, poor transitions, blocked ducts and distribution problems may require duct modifications rather than sealing alone.
WARRANTY
10-year limited Aeroseal duct-sealing warranty.
DAVESDUCTS includes a 10-year limited warranty on the Aeroseal duct-sealing work. The warranty applies to qualifying leakage related to ordinary wear and tear, ordinary use of the HVAC system and workmanship during the sealing process, subject to the written warranty terms.
10 YEARS
Limited Warranty
Warranty coverage is provided for ten years from the completion date, subject to the terms and exclusions in the written warranty.
DOCUMENTED RESULT
Post-Seal Certificate
The completed service includes a post-seal leakage report and certificate documenting the measured sealing result.
SCOPE
Duct Sealing — Not Equipment Repair
The warranty relates to the duct-sealing work. It does not convert Aeroseal into a warranty on furnaces, air conditioners, heat pumps or unrelated duct defects.
AEROSEAL PRICING
Clear residential pricing before you book.
The current DAVESDUCTS residential Aeroseal package includes duct leakage testing, inspection, accessible manual sealing, the Aeroseal procedure and before-and-after reporting.
RESIDENTIAL PACKAGE
$2,399 + HST
Current sale price for the residential Aeroseal duct-sealing package, including up to 16 supply vents.
- Pre-seal pressure test and leakage report
- Whole-system duct inspection
- Accessible manual duct sealing
- Aeroseal materials and labour
- Post-seal leakage report and certificate
- 10-year limited warranty
ADDITIONAL SUPPLY VENTS
$49 each
The base package includes up to 16 supply vents. Additional supply vents are currently priced at $49 each.
Example: a home with 25 supply vents has 9 additional vents beyond the included 16.
Homes over 4,000 sq. ft., multiple-furnace homes, condo suites, townhomes without driveways and industrial or commercial spaces require individual pricing.
AEROSEAL FAQ
Common questions about Aeroseal duct sealing.
What does Aeroseal actually seal?
Aeroseal is intended to seal qualifying leakage at duct seams, joints and small openings by introducing aerosolized sealant into a pressurized duct system.
Does Aeroseal coat the inside of the ductwork?
No. The process is designed so sealant accumulates at leaks rather than lining the entire inside surface of the duct system.
Can Aeroseal fix disconnected ducts?
No. Broken, disconnected or badly damaged duct sections have to be located and physically repaired before sealing can be completed properly.
How large a hole can Aeroseal seal?
DAVESDUCTS identifies approximately 5/8 inch as the upper limit for a qualifying opening. Larger defects require manual repair.
How do I know whether the sealing worked?
The duct system is pressure tested before and after sealing. DAVESDUCTS provides pre-seal and post-seal leakage reporting so the measured reduction can be documented.
Does Aeroseal fix airflow or hot/cold room problems?
It can help when duct leakage is contributing to the problem. It will not correct every airflow problem. Undersized ductwork, inadequate returns, restrictive filters or coils, blocked ducts and equipment issues may require separate corrective work.
Should the ducts be cleaned before Aeroseal?
DAVESDUCTS recommends cleaning the duct system before sealing where cleaning is needed so debris is removed before the Aeroseal process is performed.
Is there a warranty?
Yes. DAVESDUCTS includes a 10-year limited warranty on qualifying Aeroseal duct-sealing work, subject to the written warranty terms.
How much does residential Aeroseal duct sealing cost?
The current residential sale price is $2,399 + HST for up to 16 supply vents, with additional supply vents currently priced at $49 each. Larger or more complex properties require individual pricing.
DAVESDUCTS • AUTHORIZED AEROSEAL DEALER
Measure the leakage, fix the physical defects, seal the remaining leaks, then measure again.
That is the process. If your duct system has comfort, leakage or distribution concerns, DAVESDUCTS can help determine whether Aeroseal, manual duct repair or another duct-system correction makes sense.
