Duct Sealing Critical to Halting the Spread of Airborne Infections at Nemours Children’s Clinic


Aeroseal Used To Seal Exhaust Ventilation System And Ultimately Gain Control of Airflow In Older 11-story Medical Facilities

There had been so many retrofits and extensions added to the ventilation system at Nemours Children’s Clinic in Jacksonville, Florida that engineers weren’t sure where their airflow problems were coming from. What they did know was that negative pressure and inadequate ventilation throughout the 30+-year-old building could support the spread of nosocomial infections. Their first steps in taking control of the situation was to seal the leaks in the exhaust shafts located on each floor and then seal the main shaft running down the length of the 11-story building.

In Brief:

  • HVAC Contractors: Carrier Corporation
  • Aeroseal Contractors: Aeroseal Southeast
  • Property Name: Nemours Children’s Clinic
  • Type: 11-story outpatient medical facilities
  • Goal: Improve airflow; reduce the risk of nosocomial infections
  • Before Aeroseal: Total system leakage: 4,912 CFM*
  • After Aeroseal: Total system leakage: 723 CFM
  • Results: 85% reduction in leakage.  *Cubic feet per minute

Aerosealing the entire children’s clinic took less than 30 days to complete. The difference it made to the efficiency of the exhaust system was immediate and obvious. With the ductwork effectively sealed from the inside, engineers were able to accurately analyze the system and upgrade it with regulating dampers and other flow-adjusting technologies. Now the building’s exhaust system is optimized at all times. The bottom floors are as well ventilated as those on the top. Most importantly, the air being exhausted is coming from the rooms and common areas that need it; contaminated air is being removed from the building. As an added bonus, the clinic is able to run its exhaust fan at a fraction of the power that was previously needed, saving the clinic substantially on its energy costs.


“In order for a hospital to be clean, you have to manage the building’s airflow. By aerosealing the exhaust shafts we ensured that the right amount of stale and potentially infectious air is being adequately and continually removed from the building.” Derrick Rhodes, President, Aeroseal Southeast

“Exhausting air from a leaky ventilation shaft is like using a straw with holes in it. No amount of force is adequate to effectively ventilate the bottom floors of the building. Now, after sealing the leaks with Aeroseal, all floors are getting the ventilation they need. As a side benefit, we were able to dramatically reduce the speed of the exhaust fan, which has resulted in substantial energy savings for the clinic. With the ductwork effectively sealed, we are now able to take additional steps to optimize the entire exhaust system. ” Chuck Boynton, Areas Project Manager, Carrier Corporation

Aeroseal – The Technology

  • Developed at Lawrence Berkeley National Laboratory in 1994.
  • Research for Aeroseal was partially funded by the EPA and the U.S. Department of Energy.
  • Aeroseal is the only duct sealant technology that is applied from the inside of the duct system. It is delivered as a non-toxic aerosol mist that seeks out and plugs leaks.
  • Aeroseal has proven to be 95% effective at sealing air duct leaks.

 Aeroseal – The Company

  • Aeroseal LLC is a subsidiary of JMD Corporation. The company is dedicated solely to the support of its dealers and the expansion of Aeroseal technology as a primary means of residential and commercial energy conservation.
  • Aeroseal is the sole owner and licensee of Aeroseal technology.
  • Aeroseal technology was bought by Carrier Corporation in the late 1990s. In 2010, Mark Modera, the inventor of Aeroseal, with the support of private equity investors, bought the company from carrier to realize the full potential and benefits of the technology. This lead to the launch of Aeroseal LLC in 2011.

We help you achieve these goals and provide your customer with the highest possible level of quality air and cleanliness with our patented, innovative duct sealing solution.

 If you are a hotel, hospital, school, or other commercial building,  please contact us for a FREE consultation and estimate: Aspen Air Duct Cleaning & Sealing, 270 Lawrence St.
, Methuen, MA  01844   978.681.5023info@aspenenvironmentalservices.com / aspenairductcleaning.com

Aeroseal®Duct Sealing

Aeroseal ® Duct Sealing




• Attract visitors; have return visitors
• Obtain better reviews
• Ensure comfort
• Eliminbate dust; provide fresher atmosphere
• Comply with safety regulations and codes
• Contain energy costs
• Increase outsourcing/vendor/tenant retention
• Have better resale value

“(Aeroseal) dramatically improved the efficiency of the
current system, allowed us to reduce energy use related to heating
and the use of exhaust fans and it solved a lot of issues related to
poor ventilation. We expect pay back on the duct sealing to take
less than two years. Then it’s simply ongoing savings right off the
top of the hotel’s monthly operating expenses.”
—Jason Delambre, Energy Consultant, Interdependent Energies LLC


       • Reduces up to 90% duct leakage
       • Fixes pressurization issues
       • Decreases fan horsepower
       • Extends equipment life
       • Better IEQ
       • Increases comfort
       • Does not require shutdown or
          interruption of daily operations to
          Aeroseal buildings
      • Consumes less energy
      • Saves on heating and cooling costs



      Creating optimal hospitality environments
for better visitor experiences.


Is Your Hotel a Place Where Visitors Will Want to Return?


People spend billions of dollars on travel especially on
hotel stays. A high-quality environment is critical to your
hospitality business. Comfortable lodging and dining
spaces can increase business at your hotel and ensure
that your guests return time and time again.


Essential for hospitality spaces is that they:
         • Provide evenly balanced air temperatures throughout
           all spaces creating better air flow
         • Provide comfortable rooms for more visitor and
           worker satisfaction
         • Save significant amounts of spending on wasted air
           leakage and equipment overload
         • Reduce toxins, particles, and microbials to provide
           less smells; fresher air
We help your customers achieve these goals to perform
in the highest possible level of quality air and comfort
with our patented, innovative duct sealing solution.


Proven Positive Outcomes in Hospitality Spaces


A typical hotel loses 25-40% of heating and cooling energy through the ductwork. Aeroseal reduces up to 90% of that duct leakage. And, our commercial duct sealing system will reduce heating and cooling costs by up to 20%.


Our duct sealing solution covers:
        • lodging rooms
        • dining rooms
        • waiting and gathering areas
        • meeting and work spaces


Case Study:


Capital Plaza Finds Aeroseal Duct Sealing
Reduces Monthly Energy Bill, Ends
Chronic Mold Problems & Eliminates Cold
Spots – Pays For Itself In 18 Months


Building: Capital Plaza Hotel, Frankfort, Kentucky
Aeroseal Contractors: Service Tech
Energy Consultants: Interdependent Energies
Building Specs: 10-story; 160,000 ft2; hotel/
convention center. First opened in 1960.


Goal: Reduce duct leaks; save energy; improve IAQ.
Before Aeroseal: Total leakage: 6,270 CFM
After Aeroseal: Total leakage: 771 CFM
Results: 90% reduction in leakage.


“(We) got to see how the Aeroseal technology
actually worked. The computer-generated graph follows
the sealing process in real time, and we watched as the
leaks were sealed and the CFM of lost air went down to
practically nothing. There was no other way, short of
tearing down and rebuilding the hotel, that we could
have gotten anything near these results.”
—Chad Braden Director of Facilities, Capital Plaza


We help you achieve these goals and provide your customer with the highest possible level of quality air and cleanliness with our patented, innovative duct sealing solution.

 If you are a hotel, hospital, school, or other commercial building,  please contact us for a FREE consultation and estimate: Aspen Air Duct Cleaning & Sealing, 270 Lawrence St.
, Methuen, MA  01844   978.681.5023info@aspenenvironmentalservices.com / aspenairductcleaning.com