MIX-IND® Technology
Air Diffusion by Pulsion
MIX-IND® Technology has the purpose of achieving the highest performance and energy efficiency level for any space.
MIX-IND® Technology is engineered to achieve the highest levels of energy efficiency by rethinking how conditioned air is introduced to a space. At the core of the system is a principle known as air pulsion, which transforms traditional ductwork into a complete air distribution solution using micro-perforated metallic ducts.
Originally introduced by SINTRA in Europe in 1981, this approach has been refined over more than 40 years and applied in over 15,000+ projects. While relatively new to the North American market, these systems are widely adopted in Europe today due to their adaptability and proven performance.
Unlike traditional systems that focus on localized air diffusion, MIX-IND® uses controlled air turbulence and pressure differentials to set the entire volume of air in motion—eliminating drafts and stratification. This approach replaces the need for conventional diffusers and provides greater flexibility in mechanical system placement and space usage.
MIX-IND® is also ideal for retrofit and decarbonization projects, offering measurable energy savings while reducing material usage, trade coordination, and labor on site.
With decades of continuous research behind it, the technology offers a reliable, performance-driven solution for modern building design.
Tailor Made
Every solution is unique and custom made to fit your project
Our knowledge is yours
Our engineers work confidentially with your team to help you develop the best solution for your project
Compact Shipping
Our SPIROPACK design makes it easy to ship across the world and limit the carbon foot print
Assisted Design
Our Technical Request Form allows us to better understand your project and provide the best solution
Frequently Asked Questions
Where is your product Manufactured?
Our HQ and manufacturing plant are both located in Italy. We also have offices in France, United Kingdom and the USA. Our goal is to open a manufacturing plant in the USA.
What equipment do you provide on projects utilizing MIX-IND®?
We provide insulated plenum sections, optionally with a fan and filter, and perforated ductwork. The plenums are used to connect our system to the air handling equipment. Our systems are compatible with AHUs, RTUs, FCUs, VAV boxes. It can also be installed independently with a fan & filter plenum. We remain vendor-agnostic and do not supply HVAC units or BAS/control systems.
Does this system work with Demand Control Ventilation?
This system is ideal for Demand Control Ventilation.
How does this compare with fabric duct solutions currently on the market?
Fabric duct requires higher airflow and produces minimal air induction in comparison, often leading to stratification. Unlike MIX-IND®, current fabric systems lack the mechanical capability to generate high-induction airflow.
How does MIX-IND® impact the overall design of other mechanical systems?
The impact varies based on project goals. For retrofits, we can design around existing equipment; for new construction, we are more than happy to offer recommendations on equipment sizing/selection and placement based on project-specific needs.
Do you work everywhere in North America?
Yes, we do.
One of our latest projects

Height: 40 ft²
Volume of the room: 52,000,000 ft³
Traditional Air Diffusion
Roof top air flow: 1,324,000 CFM
Circulating Air Volumes: 1.53 vol/h
MIX-IND® Technology
Roof top air flow*: 700,000 CFM
Circulating Air Volumes*: 0.8 vol/h
*Outdoor Air requirements, Mechanical Load and equipment selections are determined in conjunction with Consulting Engineers and will be project specific.
Key Benefits
Homogeneity of temperatures
Variable comfort / Air speed control
Vendor Neutral: your equipment, your control system
Air throw range
No return air ducting / Weight reduction on structure
Reduces cost of installation, operation and maintenance
Does not require insulation, no condensation down to 2˚F SAT if required
Simple and flexible design
No balancing dampers or diffusors to adjust during commissioning
Assisted Design Request
MIX-IND® Technology
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