(function(){ // Run after DOM ready document.addEventListener('DOMContentLoaded', function() { // Helper: find the content controlled by a button function getContentForButton(btn) { const ctl = btn.getAttribute('aria-controls'); if (ctl) return document.getElementById(ctl); // fallback: look for sibling/menu-content return btn.closest('.e-n-menu-item')?.querySelector('.e-n-menu-content') || null; } // Close a single button/menu function closeButton(btn) { const content = getContentForButton(btn); if (content) content.style.display = 'none'; btn.setAttribute('aria-expanded', 'false'); btn.classList.remove('e-n-open'); btn.closest('.e-n-menu-item')?.classList.remove('e-n-open'); const opened = btn.querySelector('.e-n-menu-dropdown-icon-opened'); const closed = btn.querySelector('.e-n-menu-dropdown-icon-closed'); if (opened) opened.style.display = 'none'; if (closed) closed.style.display = ''; } // Open a single button/menu function openButton(btn) { const content = getContentForButton(btn); if (!content) return; // let CSS pick the display where possible; otherwise force block content.style.display = ''; if (getComputedStyle(content).display === 'none') content.style.display = 'block'; btn.setAttribute('aria-expanded', 'true'); btn.classList.add('e-n-open'); btn.closest('.e-n-menu-item')?.classList.add('e-n-open'); const opened = btn.querySelector('.e-n-menu-dropdown-icon-opened'); const closed = btn.querySelector('.e-n-menu-dropdown-icon-closed'); if (opened) opened.style.display = ''; if (closed) closed.style.display = 'none'; } // Close every menu except optional `exceptBtn` function closeAll(exceptBtn) { document.querySelectorAll('.e-n-menu-dropdown-icon[aria-expanded="true"], .e-n-menu-dropdown-icon.e-n-open') .forEach(btn => { if (btn === exceptBtn) return; closeButton(btn); }); } // Toggle function toggleButton(btn) { const isOpen = btn.getAttribute('aria-expanded') === 'true' || btn.classList.contains('e-n-open'); if (isOpen) closeButton(btn); else { closeAll(btn); openButton(btn); } } // Use event delegation so this works even if the menu is injected later document.addEventListener('click', function(e) { const btn = e.target.closest('.e-n-menu-dropdown-icon'); if (btn) { e.preventDefault(); e.stopPropagation(); // avoid immediate document click close toggleButton(btn); return; } // Click outside any menu item -> close all if (!e.target.closest('.e-n-menu-item')) { closeAll(); } }, true); // Also allow Escape to close menus document.addEventListener('keydown', function(e) { if (e.key === 'Escape') closeAll(); }); // Optional: handle touchstart to make mobile feel snappier document.addEventListener('touchstart', function(e) { const btn = e.target.closest('.e-n-menu-dropdown-icon'); if (btn) { e.stopPropagation(); toggleButton(btn); } else if (!e.target.closest('.e-n-menu-item')) { closeAll(); } }, {passive: true}); }); })(); .e-n-menu-item .e-n-menu-content { display: none; } /* optional visual class when open */ .e-n-menu-item.e-n-open > .e-n-menu-content { display: block; }

Air Movement and Energy Recovery

HVAC components

HVAC components

We specialize in the design and production of key air treatment components for HVAC industry.

SR-FS 225-560 mm

EC Fans

SR-FS 225-560 mm

EC Fans

RTC 500-2400​

8" Energy Recovery Wheels​

SFC 25-81

4" Energy Recovery Wheels​

Robot Welding technology

SR-FI-A

Laser Welded Aluminum Fan Impellers

… is a range of Backward Curved, Single Inlet, Single Width Fan Impellers made based on the latest technological solutions.

Unified Weld Shape

Precisely applied welds guarantee a perfect connection between the rotor blades and discs

Minimum heat doses

No local deformations thanks to precisely defined welding parameters

Minimum Run-out

Easy balancing with minimum mass correction.

Durability and Reliability – all in one

Intensified fatigue, geometry and performance testing

The EC fans we produce are used both in comfort ventilation and in critical applications, like data centers where operational reliability is crucial.

Therefore, we subject them to thorough testing to ensure their design is free from design flaws.

Life Cycle Test

This test involves rapidly accelerating and decelerating the fan from zero to its nominal speed. It runs for 100,000 cycles, after which we perform another test at speeds significantly above the nominal speed.

Run-out test

This is a regular inspection of our fans to assess their correct shape, which is crucial for vibration-free operation.

Performance evaluation

This is a series of tests that we conduct at our AMCA research station, using appropriate standards, to ensure the consistent efficiency of our fans.

How do we operate

Local production and testing. Production and delivery traceability. Competitive pricing, Quick leadtime.

Sustainability

When designing new products, improving existing ones and implementing new processes in our company, we pay great attention to how they will affect our environment.
That is why we choose solutions that will allow us to achieve our business goals while maintaining our social responsibility to the communities that we serve.

Lean Management

It is a system that interconnects all processes taking place in our company. It is a tool that allows for quick exchange of information within our organization, and thus for permanent, quick implementation of new solutions as well as improvement of those already implemented.

Automated & Robotized Production

To ensure full repeatability of the components we produce, we have implemented highly automated production lines with cutting-edge automation solutions.
All this to eliminate the human factor from these production activities, where the key issue is the precision of execution and validation of the correctness of assembly activities.

Manufacturing & stocking

USA and Poland

We design and manufacture locally… to be as close as possible to our customers and the markets that they operate. So as to fully understand their requirements and follow changes in regulations.

USA Office

1075 Highway 124
Building 300, Suite 300
Hoschton, GA

Poland Office

Rumska 18

81-198 Dębogórze

Energy Recovery Wheels

Heat Transfer Media

Humidity transfer coating based on 3Å molecular sieve for odor-free operations

Design & Performance

Monolithic construction of the heat accumulation structure based on a patented foil forming technology that interlocks subsequent foil layers

Complience with standards

Go to the print section, mark the selected device with your projetc tag, and save it as a PDF file on your computer.

Counterflow Heat Exchangers

Advanced plate embossing technology

ensuring their strengthening and development of the maximum heat exchange surface

Two options of plate spacing

3 mm – for ventilation systems in which achieving high heat recovery efficiency must go hand in hand with low air flow resistance

2 mm – for ventilation systems where the efficiency of the heat recovery process is a priority

Swiss Rotors Lab

We have installed a certified AMCA test station, where we test the performance and of our fans based on AMCA guidelines – the basic standard for the most recognized fan certification in the world

The lab of Swiss Rotors Sp. z o.o is accredited with AMCA International as being qualified to conduct tests in accordance with AMCA 210 Fig. 12, Fig. 15.

Online Selection Tool

Selection tool with a New Interface and well-thought-out selection logic. Simultaneous calculations of multiple size variants. Duty point selection on interactive performance chart.

One window – all products

Select the product group from the program menu, enter your data, and analyze the results. Easily switch between products from our portfolio.

One calculation – multiple dimensional options

Select the most appropriate dimensional or performance option for your product by simply switching between them

Tag and Print

Go to the print section, mark the selected device with your projetc tag, and save it as a PDF file on your computer.