
Ductwork Sealing
Do you have airtight HVAC ductwork? Is air reaching all areas and offices? Do you want to reduce building operating costs? AEROSEAL technology can help you solve these problems. This way, you can cut costs by dozens of percent and significantly improve the indoor climate in your building!
Why Address HVAC Duct Leakage?
Leaky HVAC ductwork causes a number of very unpleasant problems—from high building operating costs and reduced HVAC system efficiency to odor transfer and poor indoor air quality.
Significant Energy Savings
Electricity savings of up to tens of percent during HVAC operation.
Odor Elimination
Airtight ductwork prevents the spread of odors throughout the building, such as cooking smells.
A healthy indoor environment
Airtight ductwork helps ensure efficient air distribution.
Reduced emissions
Airtight HVAC ductwork contributes to reducing a building’s lifecycle emissions.
Our Services
Leak testing and validation, sealing new HVAC systems, sealing in apartment buildings, sealing in commercial buildings.
How Does AEROSEAL Work?
We apply a special, health-safe sealing agent in the form of a fine mist (aerosol) to the HVAC ductwork. This mist flows through the entire system, and in areas where air is leaking, the aerosol particles begin to settle and fill the gaps. Through gradual layering, the gaps are completely sealed, and the material subsequently hardens permanently.




Why Alkion?
Big and experienced team
We have more than 35 experienced technicians and a great technical background including our own research team. We are ready for big and demanding projects.
Industry experience
We clean and seal the ductwork for top notch clients such as Four Seasons Hotel Prague or Westfield Chodov.
Professional certifications
Our certifications include VDI 6022B, NADCA or EVHA.
Czech family business
We are the biggest company in this sector on the Czech market, working across whole Europe with experience since 2009.
FAQ
Didn’t find what you were looking for? Check out our FAQ, or give us a call or send us an email right away!
History and Origins of AEROSEAL.
Like many successful projects, AEROSEAL began in a garage. Dr. Mark Modera invented a breakthrough aerosol-based sealing technology there. For the first time, it was possible to seal leaks and holes in air ducts from the inside. Modera’s invention was very well received by the industry and even won the prestigious Energy Top 100 award from the U.S. Department of Energy. AEROSEAL has been a proven choice for 30 years, and we are now bringing it to the Czech Republic.
Can AEROSEAL help with the ESG reporting?
Yes! AEROSEAL effectively seals air ducts and reduces energy loss. It also improves air quality and employee comfort. AEROSEAL helps organizations achieve energy efficiency, reduce greenhouse gas emissions, and meet energy saving standards. As a result, it can be considered as a measure within sustainable energy use, which clients can include in their ESG reporting.
Can AEROSEAL be part of the EPC projects?
Yes! An EPC (Energy Performance Certificate) is a certificate that is part of an energy audit. It evaluates energy management, including the design of building measures, their prices, and impact. Because AEROSEAL brings guaranteed energy savings in the operation of ventilation systems, its use can be included in the overall design.
How long will the sealed ductwork last?
The American manufacturer of the technology guarantees that the system will last for 10 years after sealing. Experience shows that there is no problem to reach a period longer than 20 years.
How quickly will the investment in this technology pay off?
Long-term experience from many different projects shows that the return on investment in AEROSEAL technology ranges from 3-5 years, but returns of less than 2 years are no exception!
Other Services

Ductwork Cleaning in Manufacturing Industries
We provide cleaning of industrial ventitilation and exhausts with innovative technology.
Ductwork Cleaning in Restaurants and Kitchens
Vysoké požární riziko při vaření a smažení v odtahovém potrubí od digestoří vám rádi pomůžeme vyřešit bez demontáže potrubí.

Ductwork Cleaning in Apartment Buildings
Central ventilation cleaning in apartment and residential buildings, including AHU units.

Ductwork Cleaning in Commercial Buildings
Fast and efficient cleaning and disinfection of HVAC systems in commercial buildings.

Ductwork Cleaning in Hospitals and Labs
High quality standards for a hygienic environment in hospitals and laboratories ask for special equipment and procedures, which we can provide.
Contact us
Do you have a question or need to seal your HVAC system? Send us the completed form, and we’ll get back to you within 24 hours!


