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  • Multi-purpose building

    Most facilities in modern buildings require controlled ventilation to ensure the appropriate microclimate. This means, with respect to operating costs and the environment, ventilation with heat recovery.

  • Wellness centres

    HVAC systems ensure the extraction of humidity and the supply of fresh filtered air, eliminate the formation of moulds and maintain the level of humidity within the optimum range, also considering the building structure.

  • Changing rooms

    Changing rooms in swimming pools, sports facilities and industrial premises etc. HVAC systems ensure the extraction of odours and humidity loads (e.g. from showers or a swimming pool as well) and ensure thermal comfort. This is usually linked to the ventilation of changing room facilities (hygienic facilities, drying rooms etc.).

  • Conference halls

    Generally speaking, this could be any large hall for people (usually seated), such as a conference or theatre hall, a theatre or a cinema. HVAC systems ensure the supply of fresh filtered air, the extraction of odours, humidity, ozone (e.g. from projecting or laser shows), mist / smoke (in concert halls) and maintain the required thermal microclimate (air reheating or cooling).

  • Wellness centres

    HVAC systems ensure the extraction of humidity and the supply of fresh filtered air, eliminate the formation of moulds and maintain the level of humidity within the optimum range, also considering the building structure.

  • Flats (centralized ventilation)

    HVAC systems ensure the optimum microclimate, the supply of fresh filtered air and the extraction of pollutants from furniture or carpets, eliminate the formation of moulds and extract humidity (from bathrooms, toilets, kitchens, laundry rooms, pantries or store rooms).

  • Restaurants

    HVAC systems ensure then comfort microclimate including the supply of fresh filtered air and air separation between the restaurant space and the kitchen facilities.

  • Bars

    HVAC systems ensure the comfort microclimate including the supply of fresh filtered air.

  • Swimming pools

    HVAC systems ensure the extraction of humidity and the supply of fresh filtered air, maintain the level of humidity within an appropriate range with respect to the building structure (55, max. 60 % rH) and extract the fumes from swimming pool chemicals.

  • Meeting rooms

    HVAC systems ensure the supply of fresh filtered air, optimum thermal comfort (heating and cooling options) and the comfort of employees – the most important asset of a company.

  • Squash courts

    HVAC systems ensure the ventilation of sports facilities (ventilation air supply for athletes) and the extraction of humidity, prevent the formation of moulds, and can also provide hot-air heating to cover the space’s heat loss.

  • Fitness clubs

    HVAC systems ensure the ventilation of sports facilities (ventilation air supply for athletes) and the extraction of humidity and odours, prevent the formation of moulds, and can also provide hot-air heating to cover the space’s heat loss.

  • Industrial kitchens

    ATREA is the only producer able to supply all ventilation system components for industrial kitchen facilities. It is based on DUPLEX ventilation units with heat recovery, operated by an especially designed control system that detects immediate heat loads. In the kitchen space it is possible to use either local (extractor hoods) or full area ventilation (SKV and TPV ventilation ceilings).

  • Offices

    HVAC systems ensure the supply of fresh filtered air, optimum thermal comfort (heating and cooling options) and the comfort of employees – the most important asset of a company.

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The compact unit ventilators DUPLEX series of the COMMERCIAL LINE are of the air flow rate between 500–15 000 mc/h. These are used for comfort ventilation, as well as warm-air heating and cooling of small office areas, shops, retail facilities, school buildings, restaurants etc. The units are very suitable for all facilites for their excellent compactness, high-efficient heat recovery, low power consumption of fans and minimum noise level.

ATREA´s DUPLEX units can be divided into two groups – DUPLEX Multi and DUPLEX Flexi. Their sales philosophies differ; hence, they cover different market segments. Our customers are thus able to meet the needs of a wide range of their clients and generate more profit.


Multi-purpose unit ventilators DUPLEX Multi

Excellent new generation of our customized compact HVAC units. These units can be 100 % project tailored and have our professional S7 heat exchanger with heat recovery efficiency up to 93 %.

  • DUPLEX 500 Multi
  • DUPLEX 1000 Multi
  • DUPLEX 1500 Multi
  • DUPLEX 2500 Multi
  • DUPLEX 3500 Multi
  • DUPLEX 5000 Multi
  • DUPLEX 6500 Multi
  • DUPLEX 8000 Multi
  • DUPLEX 10000 Multi
  • DUPLEX 11000 Multi
Multi-purpose unit ventilators

Multi-purpose unit ventilators DUPLEX Flexi

The philosophy of these units is serial production, with subsequent availability in stock. Our customers can therefore immediately react to their clients’ needs and optimize transport cost. The DUPLEX Flexi are available in four basic sizes.

  • DUPLEX 1100 Flexi
  • DUPLEX 1600 Flexi
  • DUPLEX 2600 Flexi
  • DUPLEX 3600 Flexi
DUPLEX Flexi

DUPLEX Multi-V – all spigots directed upwards

Air handling units with heat recovery of more than 90% with the same philosophy of total customization but with special design of all spigots facing upward.

  • DUPLEX 1500 Multi-V
  • DUPLEX 2500 Multi-V
  • DUPLEX 3500 Multi-V
  • DUPLEX 5000 Multi-V
  • DUPLEX 6500 Multi-V
  • DUPLEX 8000 Multi-V
DUPLEX Multi-V

Multi-purpose unit ventilators DUPLEX Multi-N Rooftop

New generation of our customized HVAC air-handling units with heat recovery. The philosophy of these units are the same like with Multi line but the construction is developed for the outside rooftop installation. Like with Multi inside version 100 % customization, 93 % heat recovery efficiency,  integrated heating and cooling and excellent compactness are a matter of course.

  • DUPLEX 1500 Multi-N
  • DUPLEX 2500 Multi-N
  • DUPLEX 3500 Multi-N
  • DUPLEX 5000 Multi-N
  • DUPLEX 6500 Multi-N
  • DUPLEX 8000 Multi-N
  • DUPLEX 10000 Multi-N
  • DUPLEX 11000 Multi-N
Multi-purpose unit ventilators

Brand new generation of versatile compact units DUPLEX MultiEco

Excellent new generation of our customized compact HVAC units. These units can be 100 % project tailored and have our professional S7 heat exchanger with heat recovery efficiency up to 93 %. DUPLEX MultiEco units optimized to fullfill the Commision regulation (EU) No. 1253/2014 (Ecodesign).

  • DUPLEX 500 MultiEco
  • DUPLEX 1000 MultiEco
  • DUPLEX 1500 MultiEco
  • DUPLEX 2500 MultiEco
  • DUPLEX 3500 MultiEco
  • DUPLEX 4500 MultiEco
  • DUPLEX 5500 MultiEco
  • DUPLEX 6500 MultiEco
  • DUPLEX 7500 MultiEco
  • DUPLEX 9000 MultiEco
DUPLEX MultiEco

Brand new generation of versatile units with all spigot upwars DUPLEX MultiEco-V

Air handling units with heat recovery of more than 90% with the same philosophy of total customization but with special design of all spigots facing upward. DUPLEX MultiEco-V units optimized to fullfill the Commision regulation (EU) No. 1253/2014 (Ecodesign)

  • DUPLEX 1500 MultiEco-V
  • DUPLEX 2500 MultiEco-V
  • DUPLEX 3500 MultiEco-V
  • DUPLEX 4500 MultiEco-V
  • DUPLEX 5500 MultiEco-V
  • DUPLEX 6500 MultiEco-V
DUPLEX MultiEco-V

Brand new generation of rooftop versatile units DUPLEX MultiEco-N

New generation of our customized HVAC air-handling units with heat recovery. The philosophy of these units are the same like with Multi line but the construction is developed for the outside rooftop installation. Like with Multi inside version 100 % customization, 93 % heat recovery efficiency,  integrated heating and cooling and excellent compactness are a matter of course. DUPLEX
MultiEco-N units optimized to fullfill the Commision regulation (EU) No. 1253/2014 (Ecodesign)

  • DUPLEX 1500 MultiEco-N
  • DUPLEX 2500 MultiEco-N
  • DUPLEX 3500 MultiEco-N
  • DUPLEX 4500 MultiEco-N
  • DUPLEX 5500 MultiEco-N
  • DUPLEX 6500 MultiEco-N
  • DUPLEX 7500 MultiEco-N
  • DUPLEX 9000 MultiEco-N
DUPLEX MultiEco-N

Multi-purpose unit ventilators DUPLEX Roto

Newest generation of HVAC air-handling units with rotary wheel heat recovery exchangers for both inside and outside application. All-purpose units DUPLEX Roto are used for comfort ventilation, as well as hot air heating and cooling of all kinds of premises.

  • DUPLEX 1500 Roto
  • DUPLEX 2500 Roto
  • DUPLEX 4000 Roto
  • DUPLEX 5000 Roto
  • DUPLEX 8000 Roto
  • DUPLEX 12000 Roto
  • DUPLEX 15000 Roto
DUPLEX Roto

Multi-purpose unit ventilators DUPLEX Basic

The newest generation of the customized HVAC units with cross-flow heat recovery exchangers. The DUPLEX Basic is a cheaper version of highest quality DUPLEX Multi sister line. DUPLEX Basic has cross-flow heat recovery exchanger that together with different kinds of control system give a great market opportunity.

  • DUPLEX 1400 Basic
  • DUPLEX 2400 Basic
  • DUPLEX 3400 Basic
  • DUPLEX 5400 Basic
  • DUPLEX 7100 Basic
  • DUPLEX 8100 Basic
  • DUPLEX 10100 Basic
  • DUPLEX 12100 Basic
  • DUPLEX 15100 Basic
DUPLEX Basic

Multi-purpose unit ventilators DUPLEX Basic-N Rooftop

Brand new generation of our customized HVAC air-handling units with cross-flow heat recovery exchanger. The philosophy of these units is the same like with Basic line but the construction is developed for the outside rooftop installation. Like with Basic inside version 100 % customization, up to 70 % heat recovery efficiency, integrated heating and cooling and excellent compactness are a matter of course.

  • DUPLEX 1400 Basic-N
  • DUPLEX 2400 Basic-N
  • DUPLEX 3400 Basic-N
  • DUPLEX 5400 Basic-N
  • DUPLEX 7100 Basic-N
  • DUPLEX 8100 Basic-N
  • DUPLEX 10100 Basic-N
  • DUPLEX 12100 Basic-N
  • DUPLEX 15100 Basic-N
DUPLEX Basic-N

DUPLEX Basic-V – all spigots directed upwards

New air handling units with cross-flow heat recovery exchangers and all spigots facing upwards.

  • DUPLEX 1400 Basic-V
  • DUPLEX 2400 Basic-V
  • DUPLEX 3400 Basic-V
  • DUPLEX 5400 Basic-V
  • DUPLEX 7100 Basic-V
  • DUPLEX 8100 Basic-V
  • DUPLEX 10100 Basic-V
DUPLEX Basic-V

Benefits

Great compactness – up to 60 % space reduction; Easy instalation, no secondary costs; Own production of various heat recovery cores with efficiency from 50 to 92 % ...

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Our Selection Software

ATREA s.r.o. offers a DUPLEX compact unit selection software for use by the design professionals.
The program is presently spread as a freeware ...

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Systems

Case study of the usage of ATREA units in a multi-purpose building. You can easily hover your mouse cursor
over the multi-purpose building and click on your selection