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2021-10-19NEW High-temperature Access Door

NEW High-temperature Access Door


NEW Access doors for high-temperature ventilation systems

  • IPR-HT model for round ventilation ducts (9 sizes up to Ø500mm),
  • IPFQ-HT model for rectangular ducts, 
  • Made of galvanized steel, 
  • Comes equipped with a ceramic gasket for higher temperature resistance,
  • The design of the access door and the installed gasket ensure the highest class of airtightness of the ventilation system, 
  • Self-adhesive template included for quick installation on ventilation ducts,
  • Easy and quick assembly without special tools.

Technical sheet ipfq-htDownload the technical sheet for high-temperature access doors IPR-HT

Technical sheet ipfq-htDownload the technical sheet for high-temperature access doors IPFQ-HT

These and other products for ventilation and heat recovery can be found in the PRODUCTS section  


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2021-10-05Official Guidebook on RAHU technology

Official Guidebook on RAHU technology

Want to learn more about RAHU? In that case, Eurovent's recent guidebook on Residential Heat Recovery Ventilation Units is a must-read.

Artur Kołacz, Alnor's RAHU Product Manager, is among the HVAC experts who were involved in this Guide. PG-RAHU members from all over Europe collaborated for about two years to create a comprehensive and universal knowledge base about Heat Recovery Ventilation.

His role as product manager at Alnor and expert in RAHU allowed him to not only become involved in the whole project but also contribute a segment about casing (pg.30). Here he discusses the importance of the casing construction and shows the most common types of casing along with his commentary (pros and cons) in relation to thermal insulation properties, airtightness, and comfort.

We are thrilled that Eurovent is promoting IAQ and Mechanical Ventilation, not just through the introduction of new laws and regulations, but also through education for manufacturers, installers, designers, and end-users.

Thank you for your outstanding work and dedication:
Jan Andersson, Vytautas Astrauskas, Xavier Boulanger (Aldes), Jaroslav Chlup, Wolfgang Grassler (J. PICHLER Gesellschaft m.b.H.), Henning Gronbaek (EXHAUSTO), 
Artur Kolacz (ALNOR Ventilation Systems), Jarek Kurnitski, Gabriel Rojas (Universität Innsbruck), Igor Sikonczyk (Eurovent) Emmanuel Val (Siemens).

The guidebook is free of charge and You can Download it HERE>>>

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2021-09-20NEW Foam Damper enriched with Activated Carbon

NEW Foam Damper enriched with Activated Carbon


A New type of Foam Damper enriched with Activated Carbon


Foam dampers with active carbon are used for regulating airflow in ventilation systems. With Ultra-Fresh certification, polyurethane foam is more durable and less prone to microorganism growth. Also, the activated carbon keeps the air damper odour-free and hygienic.


Why should you choose DAT-AKU-CA dampers?

  • Ultra-Fresh enriched polyurethane foam (antifungal and antibacterial),
  • Added active carbon helps to neutralize unpleasant odours and absorb them,
  • Ventilation system air flow regulation,
  • Attenuating properties,
  • Damper thicknesses: 50 mm
  • Fire-retardant material (Cfl-s1),
  • The sizes range from 80mm up to 315mm,
  • Direct installation in the circular ventilation duct, possibility of installing several dampers in series.

Technical sheet dat-akuDownload the technical sheet for Foam Damper DAT-AKU/DAT-AKU-CA

Are dampers tested for antimicrobial effectiveness?

Ultra-Fresh antibacterial additives do not emit any odour and are invisible to the naked eye. Thus, DAT-AKU-CA foam dampers have been tested for antibacterial activity based on the AATCC 30 standards: Antifungal Activity, Assessment on Textile Materials: Mildew and Rot Resistance of Textile Materials and ISO 20743 Textiles — Determination of antibacterial activity of textile products.

certificate dat-akuDownload the ULTRA-FRESH certificate

These and other products for ventilation and heat recovery can be found in the PRODUCTS section  


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2021-08-24Does EDI FACTully offer you security?

Does EDI FACTully offer you security?


EDIFACT: Use the modern language and standard for electronic data exchange developed by the United Nations. Order quickly and easily in ALNOR with EDIFACT!

What is EDI?

EDI (Electronic Data Interchange) refers to automatic electronic data interchange using predetermined communication formats. The result is that data can be transferred between different computer systems. EDI improves the flow of information between companies as well as the circulation of documents.

What EDIFACT can do for you?


1. The safe transmission of commercial data,
2. Cost savings and time savings,
3. Data accuracy on sales and financial documents,
4. Your ERP system, warehouse program communicates directly with our SAP B1 system,
5. There will be no lost documents - neither your order nor our invoice.

EDI - implemented = tested

1. Polish trading companies,
2. German trading companies, including DIY,
3. Scandinavian trading companies.

EDI - What do we need to prepare?

1. Your ILN as a customer,
2. ILN of delivery location - your warehouses/branches,
3. Product Index list = products we will trade,
4. Multiples quantity (Stock unit)  = packages or individual items,
5. The format of your order reference = numerical, markings, etc.
6. EDI codes - D96A and D96B were applied in our case,
7. A video meeting where you, your IT department, and our IT department, together with us, will discuss the schedule of the project and the dates.

Interested? Get in touch with your salesperson or the manager of the Sales Department ( if EDI has convinced you to start working with us.


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2021-07-12Ultra Slim Heat Recovery Units SlimAIR

Ultra Slim Heat Recovery Units SlimAIR


With a heat recovery ratio of 89,9%, SlimAIR is a modern heat recovery unit that fits perfectly homes up to 150 square meters. A capacity of 250 m3/h at 100 Pa. SlimAIR stands out from the competition with its universal assembly; 1 unit with 3 mounting options: horizontal wall mounting, vertical wall mounting, and horizontal suspended mounting. Compact size and height of 24.2 cm reduce installation space for mechanical ventilation significantly.

SlimAIR heat recovery units: What are their benefits?

  • Mounting in 3 positions
  • Slim and compact design
  • Up to 89,9% heat recovery
  • 2 condensate drains
  • Filter replacement is accessible from 2 sides
  • The unit is 242mm high (one of the slimmest on the market).
  • It weighs a mere 25.5 kilograms
  • Constant flow system (CF)
  • Built-in pre-heater
  • PET heat exchanger or enthalpy exchanger ( moisture recovery)
  • One person installation with the use of a special frame
  • Easy access to USB port
  • Casing made of expanded polypropylene (EPP)
  • High thermal and acoustic insulation of the casing
  • Energy-efficient EC fans
  • Wireless control, also via a mobile application (Android and iOS systems)
  • CO2 and RH sensors for DCV (demand-controlled ventilation)
  • Easily removable and exchangeable duct connectors.
Check the Key Features of SlimAIR units

Technical sheet SlimAIRDownload the technical sheet for SlimAIR

Manual SlimAIRDownload the user manual for SlimAIR

These and other products for ventilation and heat recovery can be found in the PRODUCTS section  


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2021-05-17PV system = 702 tons of CO2 less

PV system = 702 tons of CO2 less


Alnor Ventilation Systems reduces the carbon footprint! We just completed the installation of solar panels on our warehouse roof. 12,500 m2 of roof area was covered with 2,542 solar panels. The installed power of the PV system is 966kWp.

A photovoltaic system will generate an average of 865,000.0kWh (865MWh) of power annually to power our factory. This is roughly equivalent to the average annual electricity consumption of 360 households, while at the same time preventing 702 tons of carbon dioxide from entering the atmosphere per year.

What are the benefits of photovoltaics?

The use of solar energy is one of the most environmentally friendly methods of producing energy. As opposed to traditional energy sources such as coal, oil and natural gas, solar energy is renewable and "clean", which means it does not pollute the environment or release greenhouse gases.

More information on solar energy can be found in the article What is Photovoltaics?


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2021-04-08Increase efficiency with EPP plenum boxes

Increase efficiency with EPP plenum boxes


Plenum boxes for air valves in MVHRs (mechanical ventilation with heat recovery). The FLX-PLO-EPP plenum box is insulated through the use of expanded polypropylene (EPP), eliminating the need for additional insulation. The ergonomic design of the plenum box and the small diameter of the semi-rigid ducting (FLX-HDPE make it possible to mount the entire system in the tight spaces in between the ceilings, saving space. These EPP plenum boxes have a TPE gasket on the spigots - such connections with FLX-HDPE ducts are very secure and easy to install. The air distribution system with EPP plenum boxes achieves class C airtightness. 

Why should I use EPP plenum boxes? 

  • High thermal insulation: EPP is an insulating material with λ = 0.039, the plenum box wall thickness is from 8 to 31 mm 
  • The contoured interior of the plenum box minimizes pressure drops
  • The airtightness class C
  • Corrosion resistant 
  • Simple and easy assembly - press-fit 
  • Equipped with 3 solid mounting holes for easy assembly 
  • Flange with female connector for direct connection to an air valve 
  • The plenum box body is made of EPP, the spigots are made of ABS, and TPE seals 
  • Excellent mechanical strength 
  • Available in two variants: 1 x Ø75 mm and 2 x Ø75 mm.

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2021-03-11Join us at ISH 2021

Join us at ISH 2021

This year ISH Frankfurt goes DIGITAL! You may ask how exactly does it work and what is the added value for You? Let us quickly walk You through it!

How does it work?

Similarly to previous editions, there is an online exhibitor catalogue with company & product presentations> ISH Contactor.

Here You can check Alnor’s virtual stand. Right now You can already see our 1st product novelty – never seen before New generation of Plenum Boxes

Yet, the true heart of the event is ISH digital platform 2021. A matchmaking, networking platform for HVAC professionals from around the world:

  • Network with the industry
  • Make new contacts via chats and video calls
  • Attend seminars and video conferences

Register NOW

Want to set a video meeting?  Email us at

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2021-01-01New Price List 2021

New Price List 2021


We would like to inform that since the 1st of January 2021 will be valid new price list, it will be available to download on the 1st of January.

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Advantages of the window-reveal module:
  • Nearly “invisible” installation in the window reveal, which preserves the aesthetic appearance of the facade (the only element visible from the outside of the building is a ventilation grille)

  • Flexible and easy installation
  • The choice of "right-sided" or "left-sided" assembly in the window reveal
  •  Adjustable length of the plenum box
  •  Perfect solution for installation in old / renovated buildings, especially during energy renovations,
  •  Installation in the building insulation layer, which doesn’t  obstruct the look of the façade

 hru-wall-wrev   Download the technical sheet of the HRU-WALL-WREV window reveal module


hru-wall-wrev   How to install the HRU-WALL-WREV – check assembly instruction


 These and other products for ventilation and heat recovery can be found in the PRODUCTS section  


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