University of Ottawa Heart Institute - Case Studies, Featured Case Studies, Health care,

Percentage of Air Savings: 100%

Challenges of the Project

UOHI turned to new duct sealing technology to solve one problem and wound up solving two. Hospital monitors detected that an isotope created in one of the institute’s laboratories had somehow migrated to an adjacent wing of the building. By using aeroseal technology to seal possible leaks in one of the ventilation shafts, the hospital could ensure that the isotope wasn’t spreading from one shaft to the other. Once the shaft was aerosealed, the hospital immediately noticed another significant benefit – dramatically improved ventilation efficiency and lower energy costs.

Solutions Provided

Engineer: GENIVAR | Constructive People
Duct Specialists: AWS Technologies
Before Aeroseal: Up to 800 CFM* of leakage
After Aeroseal: 10 CFM of leakage
Results: Virtually eliminated ventilation leakage. Improved system efficiency. Reduced utility costs.

More About This Project


When Used To Seal Hospital’s Stainless Steel Duct Work, Breakthrough Duct Sealing Technology Reduces Ventilation Leakage From 800 CFM to 10 CFM

There was only one way to ensure the migrating isotope wasn’t being spread through leaks in the ventilation system – and that was to seal those leaks. Using traditional duct sealing methods would have been extremely disruptive and expensive. Entire wings would have had to been shut down as workers tore down walls to access the ductwork. Fortunately, the hospital’s duct specialists, AWS Remediation Technologies, had heard about Aeroseal, a breakthrough technology that works from inside the duct system. With Aeroseal, the actual sealing process took less than a day. Regular hospital operations continued uninterrupted.

With the vents sealed, UOHI’s engineers were able to locate the problem – laboratory equipment leakage. They also discovered an unintended benefit of the duct sealing. The institute’s ventilation system – which was previously running at full capacity – could be turned down while maintaining better ventilation. Air quality was improved. Energy usage was reduced. The hospital is now planning to use Aeroseal on other ductwork throughout the institute.